187
Defines the colors, to display overlapping links

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
		.Add("Node <b>4",16,-48)
		.Add("Node <b>5",-1024,-48)
		.Add("Node <b>6",16,512)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.Links.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2),"L2")
	.Links.Add(thisform.Surface1.Elements.Item(2),thisform.Surface1.Elements.Item(1),"L3")
	.ShowLinks = 545 && ShowExtendedLinksEnum.exChangeColorOnOverlap Or ShowExtendedLinksEnum.exShowCrossLinksRect Or ShowExtendedLinksEnum.exShowExtendedLinks
	.OverlapLinksColors = "red,orange"
	.LinksColor = RGB(128,128,128)
	.AxisStyle = -1
	.ShowGridLines = .F.
	.EndUpdate
endwith
186
The exPreventOverlapMixt flag must always be used alongside either the exPreventOverlap or exChangeColorOnOverlap flag. When used with the exPreventOverlap flag, it ensures that links avoid overlapping with elements or obstacles, enabling their paths to include both rectangular and diagonal lines. When combined with the exChangeColorOnOverlap flag, overlapping links alternately adjust their width in addition to changing colors (sample 2)

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
		.Add("Node <b>4",16,-48)
		.Add("Node <b>5",-1024,-48)
		.Add("Node <b>6",16,512)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.Links.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2),"L2")
	.Links.Add(thisform.Surface1.Elements.Item(2),thisform.Surface1.Elements.Item(1),"L3")
	.ShowLinks = 673 && ShowExtendedLinksEnum.exChangeColorOnOverlap Or ShowExtendedLinksEnum.exPreventOverlapMixt Or ShowExtendedLinksEnum.exShowCrossLinksRect Or ShowExtendedLinksEnum.exShowExtendedLinks
	.LinksColor = RGB(128,128,128)
	.AxisStyle = -1
	.ShowGridLines = .F.
	.EndUpdate
endwith
185
The exChangeColorOnOverlap flag changes the color for links in areas where they overlap with other links, enhancing clarity and distinction between them

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
		.Add("Node <b>4",16,-48)
		.Add("Node <b>5",-1024,-48)
		.Add("Node <b>6",16,512)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.Links.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2),"L2")
	.Links.Add(thisform.Surface1.Elements.Item(2),thisform.Surface1.Elements.Item(1),"L3")
	.ShowLinks = 545 && ShowExtendedLinksEnum.exChangeColorOnOverlap Or ShowExtendedLinksEnum.exShowCrossLinksRect Or ShowExtendedLinksEnum.exShowExtendedLinks
	.LinksColor = RGB(128,128,128)
	.AxisStyle = -1
	.ShowGridLines = .F.
	.EndUpdate
endwith
184
The exPreventOverlapMixt flag must always be used alongside either the exPreventOverlap or exChangeColorOnOverlap flag. When used with the exPreventOverlap flag, it ensures that links avoid overlapping with elements or obstacles, enabling their paths to include both rectangular and diagonal lines. When combined with the exChangeColorOnOverlap flag, overlapping links alternately adjust their width in addition to changing colors (sample 1)

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
		.Add("Node <b>4",16,-48)
		.Add("Node <b>5",-1024,-48)
		.Add("Node <b>6",16,512)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.Links.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2),"L2")
	.Links.Add(thisform.Surface1.Elements.Item(2),thisform.Surface1.Elements.Item(1),"L3")
	.ShowLinks = 417 && ShowExtendedLinksEnum.exPreventOverlap Or ShowExtendedLinksEnum.exPreventOverlapMixt Or ShowExtendedLinksEnum.exShowCrossLinksRect Or ShowExtendedLinksEnum.exShowExtendedLinks
	.LinksColor = RGB(128,128,128)
	.AxisStyle = -1
	.ShowGridLines = .F.
	.EndUpdate
endwith
183
The exPreventOverlap flag adjusts the links to prevent them from overlapping the connected objects. The exPreventOverlap option calculates the path between A and B using the A* (A-star) pathfinding algorithm, which can be a time-consuming operation

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
		.Add("Node <b>4",16,-48)
		.Add("Node <b>5",-1024,-48)
		.Add("Node <b>6",16,512)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.Links.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2),"L2")
	.Links.Add(thisform.Surface1.Elements.Item(2),thisform.Surface1.Elements.Item(1),"L3")
	.ShowLinks = 289 && ShowExtendedLinksEnum.exPreventOverlap Or ShowExtendedLinksEnum.exShowCrossLinksRect Or ShowExtendedLinksEnum.exShowExtendedLinks
	.LinksColor = RGB(128,128,128)
	.AxisStyle = -1
	.ShowGridLines = .F.
	.EndUpdate
endwith
182
How can I replace or add an icon at runtime

with thisform.Surface1
	.BeginUpdate
	var_s = "gAAAABgYACEHgUJFEEAAWhUJCEJEEJggEhMCYEXjUbjkJQECj8gj8hAEjkshYEpk8kf8ClsulsvAExmcvf83js5nU7nkCeEcn8boMaocXosCB9Hn09pkzcEuoL/fE+Ok"
	var_s = var_s + "YB0gB9YhIHrddgVcr9aktZADAD8+P8CgIA=="
	.ReplaceIcon(var_s)
	.ReplaceIcon("C:\images\favicon.ico",0)
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <img>1</img>",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
endwith
181
exUndo, An Undo operation is performed (CTR + Z), exRedo, A Redo operation is performed (CTR + Y). exUndoRedoUpdate, The Undo/Redo queue is updated
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value case (default:value;32:`exUndoRedoUpdate`;33:`exUndo`;34:`exRedo`)",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value case (default:value;32:`exUndoRedoUpdate`;33:`exUndo`;34:`exRedo`)",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
	DEBUGOUT( "Press CTRL+Z to Undo, CTRL+Y to Redo" )
endwith
180
exLinkObjects, the user creates an element on the surface. The AllowLinkObjects property specifies the keys combination to allow user to link elements on the surface
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value = 9 ? `exLinkObjects` : value",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value = 9 ? `exLinkObjects` : value",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
	endwith
	.EndUpdate
	DEBUGOUT( "Hold SHIFT, click an element, and drag to another element to create a link between them" )
endwith
179
exEditObject, the user edits the element's caption
*** Click event - Occurs when the user presses and then releases the left mouse button over the control. ***
LPARAMETERS nop
	*** ElementFromPoint(-1,-1).Edit(0)

*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value = 8 ? `exEditObject` : value",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value = 8 ? `exEditObject` : value",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
	DEBUGOUT( "Click an element to edit its caption" )
endwith
178
exCreateObject, the user creates an element on the surface. The AllowCreateObject property specifies the keys combination to allow user to create elements on the surface
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value = 7 ? `exCreateObject` : value",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value = 7 ? `exCreateObject` : value",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2").Selected = .T.
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
	DEBUGOUT( "Double-click on the surface and immediately drag to a new position to create an element" )
endwith
177
exSelectNothing, the user clicks an empty zone of the surface. The AllowSelectNothing property specifies the keys combination to allow user to select nothing on the surface
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value = 6 ? `exSelectNothing` : value",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value = 6 ? `exSelectNothing` : value",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowSelectNothing = .T.
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2").Selected = .T.
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
	DEBUGOUT( "Select an element, and then click outside to select nothing" )
endwith
176
exSelectObject, the user clicks the object to get it selected. The AllowSelectObject property specifies the keys combination to allow user to select the object
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value = 5 ? `exSelectObject` : value",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value = 5 ? `exSelectObject` : value",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
	var_s = "Hold ALT and click, then drag to select elements within the drawn rectangle. Click an element to select it. CTRL + CLick to unse"
	var_s = var_s + "lect it"
	DEBUGOUT( var_s )
endwith
175
exMoveObject, the user moves the object. The AllowMoveObject property specifies the keys combination to allow user to move the object
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value = 4 ? `exMoveObject` : value",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value = 4 ? `exMoveObject` : value",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
	DEBUGOUT( "Move an element" )
endwith
174
exResizeObject, the user resizes the object. The AllowResizeObject property specifies the keys combination to allow user to resize the object
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value = 3 ? `exResizeObject` : value",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value = 3 ? `exResizeObject` : value",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64).AutoSize = .F.
		.Add("Node <b>2").AutoSize = .F.
		.Add("Node <b>3",64,-64).AutoSize = .F.
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
	DEBUGOUT( "Resize an element" )
endwith
173
exSurfaceHome, the user clicks the Home button on the control's toolbar, so the surface is restored to original position. The Home method has the same effect
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value = 2 ? `exSurfaceHome` : value",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value = 2 ? `exSurfaceHome` : value",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
	DEBUGOUT( "Click the Home button" )
endwith
172
exSurfaceZoom, the user magnifies or shrinks the surface. The AllowZoomSurface property specifies the keys combination to allow user to zoom the surface
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value = 1 ? `exSurfaceZoom` : value",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value = 1 ? `exSurfaceZoom` : value",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
	DEBUGOUT( "Click and drag the surface to reposition it" )
endwith
171
exSurfaceMove, the user scrolls or moves the surface. The AllowMoveSurface property specifies the keys combination to allow user to move / scroll the surface
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( .FormatABC("value = 0 ? `exSurfaceMove` : value",Operation) )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( .FormatABC("value = 0 ? `exSurfaceMove` : value",Operation) )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
	DEBUGOUT( "Click and drag the surface to reposition it" )
endwith
170
FormatABC method formats the A,B,C values based on the giving expression and returns the result

with thisform.Surface1
	DEBUGOUT( .FormatABC("value format ``",1000) )
endwith
169
FreezeEvents(Freeze) method prevents firing any event. For instance, FreezeEvents(True) freezes the control's events, no no event is fired, until the FreezeEvents(False) is called
*** Event event - Notifies the application once the control fires an event. ***
LPARAMETERS EventID
	with thisform.Surface1
		DEBUGOUT( .EventParam(-2) )
	endwith

with thisform.Surface1
	.FreezeEvents(.T.)
	DEBUGOUT( "No event is fired after FreezeEvents(True) call" )
	.BeginUpdate
	.AllowLinkControlPoint = 3 && LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
endwith
168
The exAllowChangeFrom(0x20)/exAllowChangeTo(0x40) flag of LinkControlPointEnum type allows the user to adjust the link's from/to element by dragging and dropping the start control point (requires the exStartControlPoint/exEndControlPoint flag)
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( Operation )
		DEBUGOUT( .FocusLink.ID )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( Operation )
		DEBUGOUT( .FocusLink.ID )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 99 && LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
		.Add("Node <b>3",64,-64)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.FocusLink = "L1"
	.EndUpdate
endwith
167
The LayoutStartChanging(exFocusLink)/LayoutEndChanging(exFocusLink) event notifies your application when the user focuses on a new link
*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( Operation )
		DEBUGOUT( .FocusLink )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( Operation )
		DEBUGOUT( .FocusLink )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 3 && LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.EndUpdate
endwith
166
Focus a link

*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( Operation )
	endwith

*** LayoutStartChanging event - Occurs when the control's layout is about to be changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutStartChanging" )
		DEBUGOUT( Operation )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 3 && LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Node <b>1",-64,-64)
		.Add("Node <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2),"L1")
	.FocusLink = "L1"
	.EndUpdate
endwith
165
The caption is displayed on the back, so the picture overrides it. How can I place the caption on the foreground

with thisform.Surface1
	.BeginUpdate
	.DrawPartsOrder = "extracaption,extrapicture,picture,check,caption,client"
	.Object.HTMLPicture("pic1") = "c:\exontrol\images\sun.png"
	with .Elements.Add("<b>Element")
		.PicturesAlign = 17
		.CaptionAlign = 17
		.Pictures = "pic1"
	endwith
	.EndUpdate
endwith
164
Draws a frame arround the link's arrow

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = -1 && 0xffffff80 Or LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exOrthoArrange Or LinkControlPointEnum.exMiddleControlPoint Or LinkControlPointEnum.exControlPoint Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",164,64)
		.Add("Element <sha ;;0>B",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		with .Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(1))
			.ShowLinkType = 3 && ShowLinkTypeEnum.exLinkStraight Or ShowLinkTypeEnum.exLinkDirect
			.StartPos = 0
			.ArrowSize = 8
			.ArrowColor = RGB(255,255,255)
			.ArrowFrameColor = RGB(0,0,0)
		endwith
	endwith
	.FitToClient
	.EndUpdate
endwith
163
Draws a frame arround the arrow for all links

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = -1 && 0xffffff80 Or LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exOrthoArrange Or LinkControlPointEnum.exMiddleControlPoint Or LinkControlPointEnum.exControlPoint Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	.LinksArrowSize = 8
	.LinksArrowColor = RGB(255,255,255)
	.LinksArrowFrameColor = RGB(0,0,0)
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",164,64)
		.Add("Element <sha ;;0>B",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		with .Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(1))
			.ShowLinkType = 3 && ShowLinkTypeEnum.exLinkStraight Or ShowLinkTypeEnum.exLinkDirect
			.StartPos = 0
		endwith
	endwith
	.FitToClient
	.EndUpdate
endwith
162
Change the size to display the arrow of the link

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = -1 && 0xffffff80 Or LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exOrthoArrange Or LinkControlPointEnum.exMiddleControlPoint Or LinkControlPointEnum.exControlPoint Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",164,64)
		.Add("Element <sha ;;0>B",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		with .Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(1))
			.ShowLinkType = 3 && ShowLinkTypeEnum.exLinkStraight Or ShowLinkTypeEnum.exLinkDirect
			.StartPos = 0
			.ArrowSize = 8
		endwith
	endwith
	.FitToClient
	.EndUpdate
endwith
161
Change the size to display the arrows for all links

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = -1 && 0xffffff80 Or LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exOrthoArrange Or LinkControlPointEnum.exMiddleControlPoint Or LinkControlPointEnum.exControlPoint Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	.LinksArrowSize = 8
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",164,64)
		.Add("Element <sha ;;0>B",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		with .Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(1))
			.ShowLinkType = 3 && ShowLinkTypeEnum.exLinkStraight Or ShowLinkTypeEnum.exLinkDirect
			.StartPos = 0
		endwith
	endwith
	.FitToClient
	.EndUpdate
endwith
160
Extends the caption on the element's width
with thisform.Surface1
	var_s = "<solidline> <c><b>Bank Account</b></solidline><br>+ owner: String <r><a 1;e64=gA8ABzABvABsABpABkg8JABuABlAAgAA4AAwisXjMYH0TAECMY"
	var_s = var_s + "AjsCMwAM4AkMGhEGOUei0Yl8bkQAOAAlsGmsSlp0h0SgkCF8DgsNhUMhEKiESkYAoMlk8phssmcCltLMNTAFOlFDlc2l0amMxjomAAjAA5AA2tMaHcfplZk1blVDqtuo"
	var_s = var_s + "NXjoAAEBA=>▲</a><br><solidline>+ balance: Currency = 0</solidline><br>+ deposit(amount: Currency)<r><a 2;e64=gA8ABjAA+AECM"
	var_s = var_s + "wAM8DABvABshoAOQAEAAHAAGEWjEajMGNoAMoAOgANERMgAOcHAAvAEJhcEh0Qh0Tg0CmkqMMFlUuhkxiMTisXjNCjk6EwAEYAHIAG1MjY7lUsnkwh8/nUClk5gwAAEB"
	var_s = var_s + "A==>▲</a><br>+ withdraw(amount: Currency)"
	with .Elements.Add(var_s)
		.ID = "Account"
		.X = -128
		.CaptionSingleLine = 1
		.AutoSize = .F.
		.Width = 256
		.Height = .AutoHeight
		.CaptionAlign = 4 && 0x4
	endwith
endwith
159
Gets the width/height of the element to fit its content ( as if the AutoSize property is True )

*** AnchorClick event - Occurs when an anchor element is clicked. ***
LPARAMETERS AnchorID,Options
	with thisform.Surface1
		with .Elements.Item("Account")
			.Height = .AutoHeight
		endwith
	endwith

with thisform.Surface1
	var_s = "<solidline> <c><b>Bank Account</b></solidline><br>+ owner: String <r><a 1;e64=gA8ABzABvABsABpABkg8JABuABlAAgAA4AAwisXjMYH0TAECMY"
	var_s = var_s + "AjsCMwAM4AkMGhEGOUei0Yl8bkQAOAAlsGmsSlp0h0SgkCF8DgsNhUMhEKiESkYAoMlk8phssmcCltLMNTAFOlFDlc2l0amMxjomAAjAA5AA2tMaHcfplZk1blVDqtuo"
	var_s = var_s + "NXjoAAEBA=>▲</a><br><solidline>+ balance: Currency = 0</solidline><br>+ deposit(amount: Currency)<r><a 2;e64=gA8ABjAA+AECM"
	var_s = var_s + "wAM8DABvABshoAOQAEAAHAAGEWjEajMGNoAMoAOgANERMgAOcHAAvAEJhcEh0Qh0Tg0CmkqMMFlUuhkxiMTisXjNCjk6EwAEYAHIAG1MjY7lUsnkwh8/nUClk5gwAAEB"
	var_s = var_s + "A==>▲</a><br>+ withdraw(amount: Currency)"
	with .Elements.Add(var_s)
		.ID = "Account"
		.X = -128
		.CaptionSingleLine = 1
		.AutoSize = .F.
		.Width = 256
		.Height = .AutoHeight
		.CaptionAlign = 4 && 0x4
	endwith
endwith
158
Expandable-caption

*** AnchorClick event - Occurs when an anchor element is clicked. ***
LPARAMETERS AnchorID,Options
	with thisform.Surface1
		DEBUGOUT( AnchorID )
	endwith

with thisform.Surface1
	var_s = "<solidline> <c><b>Bank Account</b></solidline><br>+ owner: String <r><a 1;e64=gA8ABzABvABsABpABkg8JABuABlAAgAA4AAwisXjMYH0TAECMY"
	var_s = var_s + "AjsCMwAM4AkMGhEGOUei0Yl8bkQAOAAlsGmsSlp0h0SgkCF8DgsNhUMhEKiESkYAoMlk8phssmcCltLMNTAFOlFDlc2l0amMxjomAAjAA5AA2tMaHcfplZk1blVDqtuo"
	var_s = var_s + "NXjoAAEBA=>▲</a><br><solidline>+ balance: Currency = 0</solidline><br>+ deposit(amount: Currency)<r><a 2;e64=gA8ABjAA+AECM"
	var_s = var_s + "wAM8DABvABshoAOQAEAAHAAGEWjEajMGNoAMoAOgANERMgAOcHAAvAEJhcEh0Qh0Tg0CmkqMMFlUuhkxiMTisXjNCjk6EwAEYAHIAG1MjY7lUsnkwh8/nUClk5gwAAEB"
	var_s = var_s + "A==>▲</a><br>+ withdraw(amount: Currency)"
	with .Elements.Add(var_s)
		.ID = "Account"
		.X = -256
		.Y = -164
		.CaptionSingleLine = 1
		.CaptionAlign = 4 && 0x4
	endwith
	var_s1 = "<solidline> <c><b>Person</b></solidline><br>+ name: String <r><a 1;e64=gA8ABzABvABsABpABkg8JABuABlAAgAA4AAwisXjMYH0TAECMYAjsCMwA"
	var_s1 = var_s1 + "M4AkMGhEGOUei0Yl8bkQAOAAlsGmsSlp0h0SgkCF8DgsNhUMhEKiESkYAoMlk8phssmcCltLMNTAFOlFDlc2l0amMxjomAAjAA5AA2tMaHcfplZk1blVDqtuoNXjoAAE"
	var_s1 = var_s1 + "BA=>▲</a><br><solidline># birth: Date</solidline><br>+ getCurrentAge(): int<r><a 2;e64=gA8ABjAA+AECMwAM8DABvABshoAOQAEAAHA"
	var_s1 = var_s1 + "AGEWjEajMGNoAMoAOgANERMgAOcHAAvAEJhcEh0Qh0Tg0CmkqMMFlUuhkxiMTisXjNCjk6EwAEYAHIAG1MjY7lUsnkwh8/nUClk5gwAAEBA==>▲</a>"
	with .Elements.Add(var_s1)
		.ID = "Person"
		.Y = -164
		.CaptionSingleLine = 1
	endwith
	var_s2 = "<solidline> <c><b>Student</b></solidline><br><solidline>+ classes: List<Course> <r><a 1;e64=gA8ABzABvABsABpABkg8JABuABlAA+AAgAEC"
	var_s2 = var_s2 + "McTi4AMwAM4AjMGhEGOUVAA4AAwk8plcqihwAElg0wiUlOkOiUEgQvgcFhsKhkIhUQiUUnccj0gn0jmMagUlowAMNOpEfkMNkkmlEqrctjQmAAjAA5AA2sssHcbnkdq1"
	var_s2 = var_s2 + "Ln1QtVSjQAAEBA==>▲</a></solidline><br>- attend(class: Course)<r><a 2;e64=gA8ABjAA+AECMwAM8DABvABshoAOQAEAAHAAGEWjEajMGNoAM"
	var_s2 = var_s2 + "oAOgANERMgAOcHAAvAEJhcEh0Qh0Tg0CmkqMMFlUuhkxiMTisXjNCjk6EwAEYAHIAG1MjY7lUsnkwh8/nUClk5gwAAEBA==>▲</a><br>- sleep()"
	with .Elements.Add(var_s2)
		.ID = "Student"
		.Y = -64
		.CaptionSingleLine = 1
	endwith
	with .Links.Add(thisform.Surface1.Elements.Item("Account"),thisform.Surface1.Elements.Item("Student"))
		.Caption = "<fgcolor A0A0A0><solidline 808080> <c><b>Link</b></solidline><br># count: number <r><a ;exp=12992>➤</a>"
	endwith
endwith
157
Expandable-caption

with thisform.Surface1
	with .Elements.Add("<solidline><b>Header</b></solidline><br>Line1<r><a ;exp=show lines>+</a><br>Line2<br>Line3")
		.CaptionSingleLine = 1
	endwith
endwith
156
Fullfit the caption on the element's width

with thisform.Surface1
	var_s = "<solidline><b>Bank Account</b></solidline><br>+ owner: String <r><a 1;properties>+</a><br><solidline>+ balance: Currency = 0</so"
	var_s = var_s + "lidline><br>+ deposit(amount: Currency)<r><a 2;methods>+</a><br>+ withdraw(amount: Currency)"
	with .Elements.Add(var_s)
		.CaptionSingleLine = 1
		.BackColor = RGB(248,248,248)
		.AutoSize = .F.
		.Width = 194
		.Height = 76
		.CaptionAlign = 4 && 0x4
	endwith
endwith
155
Wrap the caption by <br> or "\r\n" sequence only

with thisform.Surface1
	var_s = "<solidline><b>Bank Account</b></solidline><br>+ owner: String <r><a 1;properties>+</a><br><solidline>+ balance: Currency = 0</so"
	var_s = var_s + "lidline><br>+ deposit(amount: Currency)<r><a 2;methods>+</a><br>+ withdraw(amount: Currency)"
	with .Elements.Add(var_s)
		.CaptionSingleLine = 1
		.BackColor = RGB(248,248,248)
	endwith
endwith
154
Display a custom tooltip
*** MouseMove event - Occurs when the user moves the mouse. ***
LPARAMETERS Button,Shift,X,Y
	with thisform.Surface1
		.ShowToolTip("new content","",Null,"+8","+8")
	endwith


153
Shows the tooltip of the object moved relative to its default position
*** MouseMove event - Occurs when the user moves the mouse. ***
LPARAMETERS Button,Shift,X,Y
	with thisform.Surface1
		.ShowToolTip("<null>","<null>",Null,"+8","+8")
	endwith

with thisform.Surface1
	.Elements.Add("Element with a Tooltip").ToolTip = "This is a bit of text that should be displayed when cursor hovers the element."
endwith
152
Rename Undo/Redo commands into the control's toolbar

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	.ToolBarFormat = "-1,100,101,|,103,104"
	.Object.ToolBarCaption(100) = "<img>1</img>Acasa"
	.Object.ToolBarCaption(103) = "Anuleaza <img>3</img>"
	.Object.ToolBarCaption(104) = "<img>4</img>Reface"
	.Object.ToolBarToolTip(100) = "Restabileste vizualizarea la origine."
	.Object.ToolBarToolTip(101) = "Mareste vizualizarea."
	.Object.ToolBarToolTip(103) = "Anuleaza ultima actiune UI. Pentru a anula o actiune apasati Ctrl+Z."
	.Object.ToolBarToolTip(104) = "Inverseaza cea mai recenta operatie de anulare. Pentru a reface o actiune apasati Ctrl+Y."
	with .Elements
		.Add("Item <b>1",-64,-48)
		.Add("Item <b>2",32,32)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.EndUpdate
endwith
151
Add Undo/Redo commands to control's toolbar

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	.ToolBarFormat = "-1,100,101,|,103,104"
	with .Elements
		.Add("Item <b>1",-64,-48)
		.Add("Item <b>2",32,32)
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.EndUpdate
endwith
150
Clear Undo/Redo queue (method 2)
with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	c = .UndoRedoQueueLength
	.UndoRedoQueueLength = 0
	.UndoRedoQueueLength = c
	DEBUGOUT( .UndoListAction() )
	.EndUpdate
endwith
149
Clear Undo/Redo queue (method 1)
with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.AllowUndoRedo = .T.
	DEBUGOUT( .UndoListAction() )
	.EndUpdate
endwith
148
Removes Redo operations
with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.Undo
	.RedoRemoveAction(10)
	DEBUGOUT( .RedoListAction() )
	.EndUpdate
endwith
147
Removes Undo operations
with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.UndoRemoveAction(10)
	DEBUGOUT( .UndoListAction() )
	.EndUpdate
endwith
146
Record the UI operations as a block of undo/redo operations

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	.StartBlockUndoRedo
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.EndBlockUndoRedo
	DEBUGOUT( .UndoListAction() )
	.EndUpdate
endwith
145
Groups the next to current Undo/Redo Actions in a single block

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.GroupUndoRedoActions(3)
	DEBUGOUT( .UndoListAction() )
	.EndUpdate
endwith
144
Limits the number of entries within the Undo/Redo queue

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	.UndoRedoQueueLength = 1
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	DEBUGOUT( .UndoListAction() )
	.EndUpdate
endwith
143
Lists the Redo actions that can be performed on the surface

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.Undo
	DEBUGOUT( .RedoListAction() )
	.EndUpdate
endwith
142
Lists the Undo actions that can be performed on the surface

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	DEBUGOUT( .UndoListAction() )
	.EndUpdate
endwith
141
Checks whether the Undo operation is possible

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.Undo
	DEBUGOUT( "CanRedo" )
	DEBUGOUT( .CanRedo )
	.EndUpdate
endwith
140
Call Redo by code

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.Undo
	.Redo
	.EndUpdate
endwith
139
Checks whether the Undo operation is possible

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	DEBUGOUT( "CanUndo" )
	DEBUGOUT( .CanUndo )
	.EndUpdate
endwith
138
Call Undo by code

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.Undo
	.EndUpdate
endwith
137
Save the element's properties for Undo/Redo operations, by code

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Item <b>1",-64,-64)
		.Add("Item <b>2")
	endwith
	.StartBlockUndoRedo
	with .Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
		h = .StartUpdateLink
		.Color = RGB(255,0,0)
		.Width = 2
		.ShowDir = .F.
		.ShowLinkType = 2
		.EndUpdateLink(h)
	endwith
	.EndBlockUndoRedo
	.EndUpdate
endwith
136
No color is restored for the link when Undo/Redo operation is executed

*** AddElement event - A new element has been added to the surface. ***
LPARAMETERS Element
	*** Element.ShowCheckBox = True
	*** Element.CheckBoxAlign = 2

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Check <b>1",-64,-64)
		.Add("Check <b>2").Checked = 1
	endwith
	.StartBlockUndoRedo
	with .Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
		h = .StartUpdateLink
		.Color = RGB(255,0,0)
		.Width = 2
		.ShowDir = .F.
		.ShowLinkType = 2
		.EndUpdateLink(h)
	endwith
	.EndBlockUndoRedo
	.EndUpdate
endwith
135
Save the element's properties for Undo/Redo operations, by code

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	.Elements.Add("Item <b>1",-64,-64)
	.StartBlockUndoRedo
	with .Elements.Add("Item <b>2")
		h = .StartUpdateElement
		.BackColor = RGB(0,0,0)
		.ForeColor = RGB(255,255,255)
		.BorderColor = RGB(255,0,0)
		.EndUpdateElement(h)
	endwith
	.EndBlockUndoRedo
	.EndUpdate
endwith
134
No color is restored for the element when Undo/Redo operation is executed

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	.Elements.Add("Item <b>1",-64,-64)
	.StartBlockUndoRedo
	with .Elements.Add("Item <b>2")
		h = .StartUpdateElement
		.BackColor = RGB(0,0,0)
		.ForeColor = RGB(255,255,255)
		.BorderColor = RGB(255,0,0)
		.EndUpdateElement(h)
	endwith
	.EndBlockUndoRedo
	.EndUpdate
endwith
133
How can I ensure that a specified element fits the surface's visible area

with thisform.Surface1
	with .Elements
		with .Add("Element A",-100).Pattern
			.Type = 6
			.Color = RGB(224,224,224)
		endwith
		.Add("Element B",2000).EnsureVisible
	endwith
endwith
132
LayoutEndChanging(exUndo), LayoutEndChanging(exRedo) or LayoutEndChanging(exUndoRedoUpdate) notifiy your application once a Undo/Redo operation is executed (CTRL+Z, CTRL+Y) or updated

*** AddElement event - A new element has been added to the surface. ***
LPARAMETERS Element
	*** Element.ShowCheckBox = True
	*** Element.CheckBoxAlign = 2

*** LayoutEndChanging event - Notifies your application once the control's layout has been changed. ***
LPARAMETERS Operation
	with thisform.Surface1
		DEBUGOUT( "LayoutEndChanging" )
		DEBUGOUT( Operation )
	endwith

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Check <b>1",-64,-64)
		.Add("Check <b>2").Checked = 1
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.EndUpdate
endwith
131
Turn on the Undo/Redo feature

*** AddElement event - A new element has been added to the surface. ***
LPARAMETERS Element
	*** Element.ShowCheckBox = True
	*** Element.CheckBoxAlign = 2

with thisform.Surface1
	.BeginUpdate
	.AllowUndoRedo = .T.
	with .Elements
		.Add("Check <b>1",-64,-64)
		.Add("Check <b>2").Checked = 1
	endwith
	.Links.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	.EndUpdate
endwith
130
ImageSize property on 32 (specifies the size of control' icons/images/check-boxes/radio-buttons)

*** AddElement event - A new element has been added to the surface. ***
LPARAMETERS Element
	*** Element.ShowCheckBox = True

with thisform.Surface1
	.BeginUpdate
	.ImageSize = 32
	.Font.Size = 16
	var_s = "gBJJgBAIDAAEg4AEEKAD/hz/EMNh8TIRNGwAjEZAEXjAojKAjMLjABhkaABAk0plUrlktl0vmExmUzmk1m03nE5nU7nk9miAoE+oVDolFo1HpFJpU5h8Sf9OqFNqUOqN"
	var_s = var_s + "UqdPq9VrFWrlbr1QpdhAFAkFis1ntFptVrtkrpszrNvmVxqk3uVtm1kmF3sdBvF/wGBmV+j9BYGHwWJulfxdax2NyFdx2JlV6l9Nw7AAGZymdz2Cy2GxErvWcz9ivlwy"
	var_s = var_s + "V21cuxugwktzGIzmvwtl0+53U5y0a0Wazmmyu/3dCyOMyXHx/J5nIr9q3uyqnBxFN3G46ma4vb7mD2Ng4nZze00fDkHC7t7us2rOX5tguetpHRlmz4HVqnXk1PjHO+CM"
	var_s = var_s + "Po9MBMC+j2vC8j7wS8cFNI4kBo05UIvfCT/NsnsApU+0Fqg/T+oy/kPxC0sEQfErKQK96+w28UWRI8UGvO8sTLS9r2PWmsMJTDTask3CsIbIEQRA3shOXEEAO/GclJ9F"
	var_s = var_s + "EKrrA8FRbKMXRIlb0JxCkjS1LMswhCcvuel0cv26cSMa8Ufx+2sQwhEUoSXOCjSbLcnxjKc7sdKUVyq28NtVI71P9P7JxtQEapjQ6fzfM8zPfNE2PhIsLL63E40slk5y"
	var_s = var_s + "7N89LcyU9SvMb3SdUc6VJLj5VLVLfO/PS9KzNFHUa/0XyBD0dxlS9cxhMlTRSoNXypPErWDPyfNS+MwprRNO0FD8wVVZ1AI08URwVRjtJ1WCn21QkkUrXVLVPQS/XIkF"
	var_s = var_s + "gTxT9iONZ9xVTdq+L1eKg3kkF6Upe68XtfV51/MtrVjBlwYFL1ev8y1/P6/lyzzYl02wntj0RVFmS1Qa+M5as93QxEUW9e993rfmQ2+vy65M/mL1lhl/2bj2ByVduMtN"
	var_s = var_s + "hCJT9hdz41nN14Ld12Z9UjfI/oUAaGseiw6+uFLLhcVabJOS5RqOE0BHlZ5VnEr5fOMs3st+aa/bbRzrJGV51Y0b0DbqaWXZD90hIsPbjWu52+6Wyadpe66hhO+P/Xio"
	var_s = var_s + "W5rD8ZbrUZuVg6n1dsE/cXmewu1m9PVwnd35/nueXho/NaJzmjc61W76esuT77eG8pTquy9TwWH8LEzG8RDfFalx3Gcfvna9rvG/cptGLd9tuI6TZOP5Fiqi99vea+X4"
	var_s = var_s + "VRcBq/JZZtVQ9cwSs5lsXE372+a9z7PbfB3VVqHyvMctLto8uob6eV0m/cD6MN2v+T33t6sBut42vdv2bJ8a997x2maFJfK+qArbGJPEKE+1qTflMsIdW/GCJX17KcT6"
	var_s = var_s + "/czr/X+u1g29B7j/4BQfWkkx4zIHisjhPCmE0K4SwtXM+d4BvHRwNZOoBph9IJvPek9d40FoMJxf691jj2ywQQcHEWET4XJwkTszlVqm2GokewxtBT1DpQjRxDN0rUVD"
	var_s = var_s + "NKdC3lb6tzNOwh6upMSSYfv4YBCl/bsn9PxiFCEo7SI6Obc9HeOrnY8x4jtHtdpN4GRbaorhsbu18Pph5CiHymI0RpSXGJ/z2oUOxYxG858AyiI+bfJtuTcG5yelBJyT"
	var_s = var_s + "8okhqFd4a5yxL0rvulYtKCsZiWxWkc1s1cRoxxwhA31DLE0mR9l9HqX8fJgTDmFMVH0MIsRzVYnwnMi1dyzmhLt2kS2pxIiU62Wj5ptQGlSYFakLonTUJNLKaM5Wzlff"
	var_s = var_s + "EkuFkk5wTrhVO2eE7G6lJhxFFYUZ55zmn0WuBCD4pzhirFCKkbomsOoIYmZx5p90LoYWGPdD5g0QmJRKYxbZ6zYoVQ2jVGylSak7KSkFH6RSjpHKFuU+YMyNo5SulkC6"
	var_s = var_s + "I0vonTCitMXPoEpVS2H5FQfEqp2R1opIgAEkJISYARTCukOhmPNI5Ex/wzGHUsicMwA1LHgQ90Y/KpoQHAD+pB/R4NzIaMAB9Xaw1gqaAOsh/A/ptIkWUfhGK1kZH8Rg"
	var_s = var_s + "H5GqvgArqRmt4AAPrTroRofBGADkqr6Rmu4D7CEaHARiwpJrEEZsXXwlVjyMWRsaRqwdkLGNBABZmytmyMnaINZqyVpLR2ftKAAAdd6h2osbaskdiq4EZtgSmyNcbVWR"
	var_s = var_s + "JNXe3AA7REar3b0stlAAXBtoRmvJGLjEYAHUWsFcwCD/rnaop9aEICMAPdK5hT6xpeuzdOtAgKuJeGfdq6ggEbkTvAP+p9UCHXrvKkcgIA=="
	.Images(var_s)
	with .VisualAppearance
		var_s1 = "gBFLBCJwBAEHhEJAAEhABfICg6AADACAxRDgMQBQKAAzQFAYbhkGCGAAGMZxRgmFgAQhFcZQSKUOQTDKMIziaQAGgkNQwCSLIwjNIsBxPFKVQChEYxSjKA40SJNUgyj6"
		var_s1 = var_s1 + "CCY+QLIE5PfQgAL9I6eJABCCSQKkYx0HScRiwPBIbAZAYhCZqaKhWgkKI/WBQIABRDVLx5ESiLRtKy7Mq2bpvXBcNxXHalaztO68LxvKyqHb5fJ/PpgL4YHgmC4NQ7EM"
		var_s1 = var_s1 + "RwF6rfbyfZ7Xg/ORPTijZ4sdzMHTzJyscx3HqfaBoOaZU5eMLceTUMofHIndxCcasPbsOatVqjG5sYjcGC3La9cz3Pq/bpuDCbMxuaK1TrYXr1TTrcofBDldAxXRKDxR"
		var_s1 = var_s1 + "DWVhLnYOw9i6XxzjuXprCaOoKB6EwbiCZZCGOdZYlcT4xHmbhMnwNxtn+G5bmqdZ7n4Pw/i+X5zm+dQ9g4CAFjsfAJheOI8HsDoWDWTB/lwSAQkmA5PEgRYoDyDwYFYF"
		var_s1 = var_s1 + "oFmGCBmBqBphDgRJ0gOTIYBGRB/lyRh0iSCZbjYWJzgWDwIjYLoLmMCJGDKDJjBgWgqG6YhyhGHRzA2aJ1mCABOAiOJvhCZBJBYRoRmSCQmEqEQimkAZgg8TZnDCV4Uk"
		var_s1 = var_s1 + "mCUmBKZYJGYWoWCUUhiFMNZckNUh2GENoaGaGZmgmJhqhqZpGGIEx2GYIxSGGGJdggWJth2Z4JmYeoemeSZ2H6H4hGmQhihyTRHGYLg7CiCgmgqIpokoNoOiOaJ4jqAo"
		var_s1 = var_s1 + "chqaZGgaCxpAoZoaiaaJqEmWIcGgShcnCJwqEqFoR3YOoFlgchflqNouiuawHmWSYqGkWZQhcatzmaOoumuSp2j6L5bBaKo0GQKRnGGCxqiyCwmkqMpsksNpOGUGI7A0"
		var_s1 = var_s1 + "ew1G0Rxlg0PptgsZuDG2Sx2l6N5tnYNZZjUDRXDCVo5l2FoymqOpukuNpujubwLjmWY5k0ZwxkaFxYlWdp6j6b5Lnafo/nABQdg2FxcUsY5BkmXAkmeQpckwNRrkKTh8"
		var_s1 = var_s1 + "CSHZBk4NwyC4KxxgMDwakOMZDn8GgwnGAo2C4cwthMcwmCcMoHBMHRehwTIghySYNksZwcH4HBMEsHx5hyPItiweYxnwSZEH4Mozn0fR+DMAo7EYJ50gkdZelKdNql2U"
		var_s1 = var_s1 + "gJn0GIukwH4HicQRai2GI4mSVpNl0dZGledgNgcYpYDWUx3FsOQi5YV5anaTY3G6W53A2RxylydxFjiaxEFCCgBBAQ=="
		.Add(1,var_s1)
		var_s2 = "gBFLBCJwBAEHhEJAAEhABcoFg6AADACAxRDgMQBQKAAzQFAYbhkGCGAAGMZxRgmFgAQhFcZQSKUOQTDKMIziaQAGgkNQwCSLIwjNIsBxPFKVQChEYxSjKA40SJNUgyj6"
		var_s2 = var_s2 + "CCY+QLIE5PfQgAL9I6eJABCCSQKkYx0HScRiwPBIbAZAYhCZqaKhWgkKI/WBQIABRDVLx5ESiLRtKy7Mq2bpvXBcNxXHalaztO68LxvKyqHb5fJ/PpgL4YHgmC4NQ7EM"
		var_s2 = var_s2 + "RwF6rfbyfZ7Xg/ORPTijZ4sdzMHTzJyscx3HqfaBoOaZU5eMLceTUMofHIndxCcasPbsLpOS5LNKsaxmWLYdhFdTxQi6LpvfA8BwXC6JY7heRYRbFbYxRjGNi1TS7G4n"
		var_s2 = var_s2 + "GKd5WGuL4UHwI4VkaYxii8V4pgQMgVBQdQ5iCTYGi8T4vlWbJ3nuPg+l+H5AlSCg6ByPBoE8Ap3jqYxhBido5g0OgOGOGI4CsSpCCAcgcAuEokiEN5NCKfJ9DyTRjnSc"
		var_s2 = var_s2 + "g1CEYxOBmBpPCgagdgcIZoHoGIFA4AxQkCAxKAgKBwgGSpIBCZhjF2E5UnQPQMiMCJBCIBwxkSQgsgo+JtDKT4ziiQw+k6EwAnsOgLnkHI+yCQ4iEuE4klkPhShEJBpA"
		var_s2 = var_s2 + "oPgymOMoaDgHBjFMBgyD0HYTiCZSZhIIIGC4ChiHSew5kwM5omILZPiOBI0hwZw5kodIdA+M4Uj4PxOmMSJ9DuTQzmyZgviceZagaHVfj4awwmaAh2GUIYmCOEZZDaDR"
		var_s2 = var_s2 + "DFGdwcg4EwyHMN4LBOaJbCoaZqgKH8qkMfIyD8DozDyfA7A0Coui0OpMmOZJdCsahKg6NooioChwmEMxLEoXJbDUTRXGSUgykyMgQG0GpPHMdI3D4TRCgSeQ0kmaw+lG"
		var_s2 = var_s2 + "NAtCOZJVCiT5DhyRQwAqMg0EoDBBGEGAsASC5yiSCw+k4Mp6lWNQuksTpRjMTxDGzJwGmGMpDDKXYTECSAxl6Q5olkK4PgMMIVkASRMBMBgzEkaZEjsNALhIZA6AeQBg"
		var_s2 = var_s2 + "k0ZJEgAAJ0CIAgODMNIsD6DRih9uYwFyAwfCUb5ijmbI+gwdxkk8MZMGeMpPCkDxzBiC5MHMPJLDSSROFMLIoBEQogEMFJPnENYQGgE4DCOaJfC7tYkhGTQ0kyWwykuX"
		var_s2 = var_s2 + "pMiyRpKjKR4wngM4JmOWJACCdYtHMWw+Eych4nINYLAEYA8AgdAEEsQZajaQoog4GxPiMVIolcdxNG8XZVkmNoRwWRVBlFeFEeAZQJgnFiHgHwcAhjhHgGMSI5xki2Cy"
		var_s2 = var_s2 + "A4EQsA3i0HkBsLwKRFgAHcPkHopBJBcBeDUYI7xyDOHqKkWo2hLCsDIBIY4qQ5A8DoMMYwOAqCSBGKgU4yB2iDBwIgB4hxQgAAWNgBoAgsBdEcBUQ4sQ9A/HqD0JI8Rp"
		var_s2 = var_s2 + "BzH2OYVgahLBHFiJQJweQiDhDUE4SAARQAzFsG0EQwA6AOWSBkFgVAIBCHeGERQFQiCQHeFkC4vkiB8DyB4F4QxVDvGMNEOQexMjlBeOAKQiQLgfDA7QEAaRiBdEkH8T"
		var_s2 = var_s2 + "I7AZiFBAGYBIABWjYBiGACioQ4C1A+AMMgWhfgxHgPsT4URIB0COKgPgjRwiAB8AYUArxBgCF6J4GY5hrAOCAPAAoGRRCsCIMEXATXfgAF8BMJwURuEQDgD4Q4OBoAeH"
		var_s2 = var_s2 + "GFgLIwQrC2D0JoSQ+QvhrHoSgQI8AbDFGID8C4Ah6BQAQAASACwgCYCMAUMARAvCKAiAMCAokeCKBEOAKgCBoDaHuMsEAqwJDiACDURg8R6gPCyDofYWAhgoDIJ4ZAuh"
		var_s2 = var_s2 + "oiGAYGgRoQw/A0GMMga4GwxiEDeIYYInATCDBQAoBAwAoDlA0KMBoVRGiDGwDQUYIRsgaGGDgM4LAwDWB8EcIA1APhjEgGQVwgRIgjFIIQHokgZA+CSEkLIKQSjHAwMs"
		var_s2 = var_s2 + "CwDAsAEB2ABTIwRwD6A8CMToSxkAxE4HYIw+BsgbBEDAHYBwojCBoIYFgXSjABE4MsHIbQWhlGILQS4UhvBdAUKEEwHgxDAAABQQQUAhgKHiDwE4JS4A7BGLQZwCR4ga"
		var_s2 = var_s2 + "BEMUYAqgKApHgGwVAIRNgvBMMQXImwZDtE4I8UIyAZCDCAE8AwrhgAdEEBACQLRCg4FEB4AYtA7CdEiPQMoJAMDNCkOMCAXAFDhH0D0Q4EgfAaGSK4NYzRUj9BuCgAgs"
		var_s2 = var_s2 + "wOBjB4Fqpw8B2ADAwE4A4Qx2DAE6JIaQPQGhAGKBcIQ5B5gHByKIFARwADbAyKUfgdBKBBGyEcVIAB/ijHoIoSA0gdBNl+OATYERZgBGSDYWIWAUCEGKA4FAhR7CIBtY"
		var_s2 = var_s2 + "QGYZg4CMAiKEcAOwkBjHWE8Z4lQgA+DkBoTohwwCeAaMEEgBQCCABgHMRwQRhhMEWFQd4HwZgwDqFESItAbAGEANCpINAzANCCJkK4ah+heFYBURwsQrS2CsMYMoWGBh"
		var_s2 = var_s2 + "YDWI0EInQgiApXaOVI1QFDsC8MUNoMBMA1HMJga4eh+BeAWOgNNowGjYzCGAAwax+iJBeBVT4gxoBIAGFsJFBxgBiGKFkKQ7g5DFFQEcAo4AzDDACKEQQLgCiJDYB0Mg"
		var_s2 = var_s2 + "RBCCQAgQEA=="
		.Add(2,var_s2)
		var_s3 = "gBFLBCJwBAEHhEJAAEhABQ4Fg6AADACAxRDgMQBQKAAzQFAYbhkGCGAAGMZxRgmFgAQhFcZQSKUOQTDKMIziaQAGgkNQwCSLIwjNIsBxPFKVQChEYxSjKA40SJNUgyj6"
		var_s3 = var_s3 + "CCY+QLIE5PfQgAL9I6eJABCCSQKkYx0HScRiwPBIbAZAYhCZqaKhWgkKI/WBQIABRDVLx5ESiLRtKy7Mq2bpvXBcNxXHalaztO68LxvKyqHb5fJ/PpgL4YHgmC4NQ7EM"
		var_s3 = var_s3 + "RwF6rfbyfZ7Xg/ORPTijZ4sdzMHTzJyscx3HqfaBoOaZU5eMLceTUMofHIndxCcasPbsLpOS5LNKsaxmWLYdhFdTxQi6LpvfA8BwXC6JY7heRYRbFbYxRjGNi1TS7G4n"
		var_s3 = var_s3 + "GKd5WGuL4UHwI4VkaYxii8V4pgQMgVBQdQ5iCTYGi8T4vlWbJ3nuPg+l+H5AlSCg6ByPBoE8Ap3jqYxhBido5g0OgOGOGI4CsSpCCAcgcAuEosiYN5NHMOJ+D4TpTnSe"
		var_s3 = var_s3 + "Q7CEY4uBmBpPhgagdgcIZoHibIEyUBJZDQIJShoCgcCAcoyAQOYYlcZJ1D0DxDCiQgwEiAZMHEMJLFKPJ9D2DoDnidQ4k+Y5QmKEROBkIhKD0JIZDIS4TGUCQuEeEJjn"
		var_s3 = var_s3 + "OIg8CuY4RkYNgwGMM5RllGpThDRYIGKZIpCkJFUH0PINyWcQ3CaaZCG+HBnEOTJhD8Tx4GoeQ/GcaZSHOH5nCmQhshoZhihYYwhiYA4RlkNoNEMUZ3ByDjwEsPxOnMaJ"
		var_s3 = var_s3 + "9DuDR6F6GYmCmKh0nANtMioP4Gg8aoSiIO5NhodociqaY6GaFYkEyOg8lsNRNTaUgykyMgQG0GpPiONJbD8DpDEyfA6k0KwOkWMQsGsAJU0SagwkoJQJDIPISCQCJTGS"
		var_s3 = var_s3 + "UwyGaM4KkmMgtksHpFjAZ4TGCBAbgaSpcksdhNAMIJHHsD5TjSWWMAMOpwjyLwbk6cAz0KRJiDkDYzESCwiggcgcgYIQwCIEINCMCITj6TVxkMXp2j0cQLlCTo7E2F4y"
		var_s3 = var_s3 + "mkMZdhMPJHDGHpLAyVg+k4UwrCCSIyByDJ8DuDY8CiWY0kiXAXC6QJwFKGIjCeJpjgyezjlyDw6klHx5myRoMGwZwbkcToTEiew4kwbQfEmUgPkOKJUD4DpTHSHQmgkX"
		var_s3 = var_s3 + "I/ASTA1g0XIEDMTBimyfI7jSLYHEiUoPk0Fw/kadAsHGao8A0A5smEMJ2mNyg5gzJZwDgCpChyIZVyIZwFCMJEPASRkBqE+IcHInRcDxA2H4bIsx0AtDsIBpwZwYicD6"
		var_s3 = var_s3 + "BscwDwUBgHCIYaIfgtiVH2O4WgUwJjEFeAEQA7y4hMCiBMS4aRdB9A4CYE4LxljyBMHcDItBxinDCLcTYmgejBFQ9UTg9gFBOEmAQTI7A4iZGMGkQAWQ7jYA2HIL8BRA"
		var_s3 = var_s3 + "jDG4HcCwARbjZHiNoDw1nLDnGyNINQ+wjCpBMEgcovQUgICQJEcgWRuBvAyJ4d4ugpCUAINcHogxIgnDiM4N4axzD3F2JMTY/hRqYF6FsWIxhYAGGoAALQYgYirBwBEB"
		var_s3 = var_s3 + "wpAjBEAAIEIYsA2gOHCMAGgXAACIDmMITAUgFABH0D0I4WwvhNFGMAOIvxRD2GKNcMA8gjAPDCPwBogRPAxA8PgRwZRICYDED8RAXQEghEAN8DIgwIBdB4JYWwMgtiQH"
		var_s3 = var_s3 + "oFQKAiRFguFKGwGQhglDsEOVwEQQRkCKBwOIHgSREDRBYHEXQcQdD7GIGARQHRxipBrMobgewDCUCADsEYWAzgMHKHQDQxxsDzA6EMfAeQHB4GQDkUYPA0iECiKoGgRh"
		var_s3 = var_s3 + "cDdA2GMQA8AOCjDSPgHI4QnApAKBICwHg1A+BcAwcYsgbjGGQNkCIgRsA6EcBEWANADjsB0B8YYzQQDIGSBcEYZBCCPEkFIHQSgkgZAwG4IwBAbAYGGAgL4Ch4g8BOCQ"
		var_s3 = var_s3 + "AA2KKC0GcAke4AAXAFCoHkDw4xbBFEcJkE4JRSiEFeJYKQVRMgJHODwX4xAgC/AsIIZAeAHDRG0HYI40RKCLEGDUI4jAghwBWIceA+whCpHMFYZYOQxglDMHMBQGxYjV"
		var_s3 = var_s3 + "HiAoBIPgfgHGwPsHYJRSB6A0IERQLhCjJHMA4OQoAoCOACLYGYSx8DpBQIMWQdRnDRH+DsE4fB3CeAmM67kAAXBFEIDYDI7wLBtEoEIfYNwjiUGGJQYQMAjCHEAO0C4z"
		var_s3 = var_s3 + "xW29CoCgfIxR9AKA6J8BgUAIhDGMIoJ40hqgwCgKETgnBhhqCGI0AIqgZhGDANQDIlBDCRGkCoJISR0g1BSKQOgfAzBRG0DYHARh4DeDAOwANuw8ApCKKkYg/RPhjBsH"
		var_s3 = var_s3 + "0J4yg5hPGWN0GwFBHQBFaDoQIURljFAoB4GgzRVzbBECQFQRQoguHGHANwDRdCKy8CgSIGwhhoDYJYYI1giBICSAEgI="
		.Add(3,var_s3)
	endwith
	.Object.Background(70) = 0x1000000
	.Object.Background(71) = 0x2000000
	.Object.Background(72) = 0x3000000
	with .Elements
		var_Element = thisform.Surface1.Elements.Add("Element Check 1",-64,-64)
		.Add("Child").Parent = var_Element
		with var_Element
			.Pictures = "1/2"
			.Expanded = .F.
		endwith
		with .Add("Element Check 2",32,96)
			.Checked = 1
			.Pictures = "1,2"
		endwith
	endwith
	.Home
	.EndUpdate
endwith
129
ImageSize property on 16 (default) (specifies the size of control' icons)

*** AddElement event - A new element has been added to the surface. ***
LPARAMETERS Element
	*** Element.ShowCheckBox = True

with thisform.Surface1
	.BeginUpdate
	.ImageSize = 16
	var_s = "gBJJgBAIDAAEg4ACEKAD/hz/EMNh8TIRNGwAjEZAEXjAojJAjMLjABAAgjUYkUnlUrlktl0vmExmUzmk1m03nE5nU7nkrQCAntBoVDolFo1HoM/ADAplLptImdMYFOqd"
	var_s = var_s + "SqlXq1QrVbrlGpVWsFNrNdnNjsk7pQAtNroFnt0sh8Yr9iulTuNxs1Eu8OiT/vsnsNVutXlk/oGGtVKxGLxWNtsZtN8iUYuNvy0Zvd+xNYwdwvl4p870GCqc8vOeuVtt"
	var_s = var_s + "mp1knyOayWVy+WzN/ze1wOElenm+12WUz/Bv2/3UyyWrzeutux2GSyGP2dQ33C1ur3GD3M4zUNzHdlWjq/E3nGzVpjWv4HA7fRy/Tv2IrN8rPW6nZ3ve7mUlfu20Z8ac"
	var_s = var_s + "vQyb+vY9jasYoDwMm+LytVBDqKG3z8O3Cb8P+mkAuY9cCQ2uL4KaxDKvkp8RNLEjqugnrwQo/UWPzFyeQw5sNLZFENrI4kOqU66pw8uzmOKvTqNqjULJvGL1JO48GtTG"
	var_s = var_s + "sbLdEL3scxLlyiw8dQeoUVxdLTtyKmUjwGlslRPJsnK1HbAKbKCrsQo8uQk/CeP44iaR/ATnTNPLvyxPU+z9P9AUDQVBowiofJXQ6Oo+kKMpIkjztE4TKn4P6JowfgPn"
	var_s = var_s + "wD5/nAjB8AOeAPo0eAA1IAFH07UhAIMpYAVIYFHqBUhwVjV1S1EtQAHxW65V0AZwAeuQAnwB5gAPYViEDVhwAHTQBkCjB4gOhwDmCyhH0sACAg=="
	.Images(var_s)
	with .Elements
		var_Element = thisform.Surface1.Elements.Add("Element Check 1",-64,-64)
		.Add("Child").Parent = var_Element
		with var_Element
			.Pictures = "1/2"
			.Expanded = .F.
		endwith
		with .Add("Element Check 2",0,32)
			.Checked = 1
			.Pictures = "1,2"
		endwith
	endwith
	.Home
	.EndUpdate
endwith
128
We want to have option to start/end connectors at the middle of each side of the elements

with thisform.Surface1
	.BeginUpdate
	.ShowLinks = -1
	with .Elements
		.Add("Element <sha ;;0>1")
		.Add("Element <sha ;;0>2",164,64)
		.Add("Element <sha ;;0>3",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2))
	endwith
	.FitToClient
	.EndUpdate
endwith
127
How can I determine the position the user clicks within the element's boundaries (Click event)

*** Click event - Occurs when the user presses and then releases the left mouse button over the control. ***
LPARAMETERS nop
	with thisform.Surface1
		e = .ElementFromPoint(-1,-1)
		X = -1
		Y = -1
		.PointToPosition(X,Y)
			DEBUGOUT( e )
		DEBUGOUT( X )
		DEBUGOUT( Y )
	endwith

with thisform.Surface1
	.BeginUpdate
	with .Elements
		.Add("Element 1")
		.Add("Element 2",128,64)
	endwith
	.FitToClient
	.EndUpdate
endwith
126
How can I determine the position the user clicks within the element's boundaries (MouseMove event)

*** MouseMove event - Occurs when the user moves the mouse. ***
LPARAMETERS Button,Shift,X,Y
	with thisform.Surface1
		e = .ElementFromPoint(X,Y)
		.PointToPosition(X,Y)
			DEBUGOUT( e )
		DEBUGOUT( X )
		DEBUGOUT( Y )
	endwith

with thisform.Surface1
	.BeginUpdate
	with .Elements
		.Add("Element 1")
		.Add("Element 2",128,64)
	endwith
	.FitToClient
	.EndUpdate
endwith
125
How can I convert the screen position (mouse) to surface position

*** MouseMove event - Occurs when the user moves the mouse. ***
LPARAMETERS Button,Shift,X,Y
	with thisform.Surface1
		DEBUGOUT( "Point " )
		DEBUGOUT( X )
		DEBUGOUT( Y )
		.PointToPosition(X,Y)
		DEBUGOUT( "Position " )
		DEBUGOUT( X )
		DEBUGOUT( Y )
	endwith

with thisform.Surface1
	.BeginUpdate
	with .Elements
		.Add("Element <sha ;;0>1")
		.Add("Element <sha ;;0>2",164,64)
		.Add("Element <sha ;;0>3",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2))
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(1))
	endwith
	.FitToClient
	.AxisStyle = 192 && 0xc0
	.AxisColor = RGB(128,128,128)
	.EndUpdate
endwith
124
Is is possible to show just the positive coordinates

with thisform.Surface1
	.BeginUpdate
	.Coord = 17 && CoordEnum.exAllowPositiveOnly Or CoordEnum.exCartesian
	.AxisColor = RGB(128,128,128)
	.AxisStyle = 259 && LinesStyleEnum.exLinesThick Or LinesStyleEnum.exLinesDot4
	.ShowLinks = -1
	with .Elements
		.Add("Element <sha ;;0>1")
		.Add("Element <sha ;;0>2",164,64)
		.Add("Element <sha ;;0>3",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2))
	endwith
	.FitToClient
	.EndUpdate
endwith
123
Cartesian coordinates (positive coordinates are shown top-right to the origin)

with thisform.Surface1
	.BeginUpdate
	.Coord = 1
	with .Elements
		.Add("Element <sha ;;0>1")
		.Add("Element <sha ;;0>2",164,64)
		.Add("Element <sha ;;0>3",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2))
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(1))
	endwith
	.FitToClient
	.EndUpdate
endwith
122
Default coordinates (positive coordinates are shown bottom-right to the origin)

with thisform.Surface1
	.BeginUpdate
	.Coord = 0
	with .Elements
		.Add("Element <sha ;;0>1")
		.Add("Element <sha ;;0>2",164,64)
		.Add("Element <sha ;;0>3",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2))
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(1))
	endwith
	.FitToClient
	.EndUpdate
endwith
121
Is it possible to customize the path of the links orthogonally similar with Microsoft Visio tool

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = 31 && LinkControlPointEnum.exOrthoArrange Or LinkControlPointEnum.exMiddleControlPoint Or LinkControlPointEnum.exControlPoint Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Element <sha ;;0>1")
		.Add("Element <sha ;;0>2",164,64)
		.Add("Element <sha ;;0>3",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2))
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(1))
	endwith
	.Zoom = 200
	.FitToClient
	.EndUpdate
endwith
120
Does your control supports OLE Drag and Drop
*** OLEDragDrop event - Occurs when a source component is dropped onto a target component when the source component determines that a drop can occur. ***
LPARAMETERS Data,Effect,Button,Shift,X,Y
	with thisform.Surface1
		DEBUGOUT( Data )
	endwith

*** OLEStartDrag event - Occurs when the OLEDrag method is called. ***
LPARAMETERS Data,AllowedEffects
	*** Data.SetData("some data to drag")

with thisform.Surface1
	.OLEDropMode = 1
	with .Elements.Add("Click the Element wait for .5 second until + cursor is shown, to start <b>OLE Drag and Drop</b>")
		.CaptionSingleLine = .F.
		.AutoSize = .F.
		.Width = 256
		.Height = 56
	endwith
endwith
119
Is it possible to disable customizing the path of a specified link

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = -1 && 0xffffff80 Or LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exOrthoArrange Or LinkControlPointEnum.exMiddleControlPoint Or LinkControlPointEnum.exControlPoint Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",164,64)
		.Add("Element <sha ;;0>B",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		with .Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(1))
			.ShowLinkType = 3 && ShowLinkTypeEnum.exLinkStraight Or ShowLinkTypeEnum.exLinkDirect
			.StartPos = 0
			.Color = RGB(128,128,128)
			.AllowControlPoint = 0
		endwith
	endwith
	.Zoom = 200
	.FitToClient
	.EndUpdate
endwith
118
How do I let user customizes the link's path

with thisform.Surface1
	.BeginUpdate
	.AllowLinkControlPoint = -1 && 0xffffff80 Or LinkControlPointEnum.exAllowChangeTo Or LinkControlPointEnum.exAllowChangeFrom Or LinkControlPointEnum.exOrthoArrange Or LinkControlPointEnum.exMiddleControlPoint Or LinkControlPointEnum.exControlPoint Or LinkControlPointEnum.exEndControlPoint Or LinkControlPointEnum.exStartControlPoint
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",164,64)
		.Add("Element <sha ;;0>B",0,132)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(2)).CustomPath = "0.5,0.25,0.5,.75"
		with .Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(1))
			.ShowLinkType = 3 && ShowLinkTypeEnum.exLinkStraight Or ShowLinkTypeEnum.exLinkDirect
			.StartPos = 0
		endwith
	endwith
	.Zoom = 200
	.FitToClient
	.EndUpdate
endwith
117
How can I generate a picture/image/graph from my diagram
with thisform.Surface1
	with .Elements
		.Add("Element A").ID = "A"
		.Add("Element B").ID = "B"
		.Add("Element C").ID = "C"
		.Add("Element D").ID = "D"
		.Add("Element E").ID = "E"
		.Add("Element E").ID = "F"
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("B"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("C"))
		.Add(thisform.Surface1.Elements.Item("B"),thisform.Surface1.Elements.Item("D"))
		.Add(thisform.Surface1.Elements.Item("B"),thisform.Surface1.Elements.Item("C"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("E"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("F"))
	endwith
	.Object.DefArrange(4) = .F.
	.Arrange()
	var_CopyTo = .CopyTo("c:/temp/xtest.jpg")
	DEBUGOUT( "!!!check the file c:/temp/xtest.jpg!!!" )
endwith
116
How can I generate a picture/image/graph from my diagram
with thisform.Surface1
	with .Elements
		.Add("Element A").ID = "A"
		.Add("Element B").ID = "B"
		.Add("Element C").ID = "C"
		.Add("Element D").ID = "D"
		.Add("Element E").ID = "E"
		.Add("Element E").ID = "F"
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("B"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("C"))
		.Add(thisform.Surface1.Elements.Item("B"),thisform.Surface1.Elements.Item("D"))
		.Add(thisform.Surface1.Elements.Item("B"),thisform.Surface1.Elements.Item("C"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("E"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("F"))
	endwith
	.Object.DefArrange(4) = .F.
	.Arrange()
	with CreateObject("Exontrol.Print")
		.PrintExt = thisform.Surface1.Object
		.CopyTo("c:/temp/xtest.jpg")
	endwith
	DEBUGOUT( "!!!check the file c:/temp/xtest.jpg!!!" )
endwith
115
How can I print the component
with thisform.Surface1
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",0,76)
		with .Add("Element <sha ;;0>C",-76,32)
			.AutoSize = .F.
			.Height = 32
		endwith
		with .Add("Element <sha ;;0>D",76,32)
			.AutoSize = .F.
			.Height = 32
		endwith
	endwith
	with .Links
		with .Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
			.StartPos = 1
			.EndPos = 1
		endwith
		with .Add(thisform.Surface1.Elements.Item(2),thisform.Surface1.Elements.Item(1))
			.StartPos = 1
			.EndPos = 1
		endwith
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(4))
		with .Add(thisform.Surface1.Elements.Item(4),thisform.Surface1.Elements.Item(3))
			.StartPos = 0
			.EndPos = 2
		endwith
	endwith
	with CreateObject("Exontrol.Print")
		.PrintExt = thisform.Surface1.Object
		.Preview
	endwith
endwith
114
How can I show direct-links

with thisform.Surface1
	.ShowLinksType = 1
	with .Elements
		.Add("Element A").ID = "A"
		.Add("Element B",128,64).ID = "B"
		.Add("Element C",128,-64).ID = "C"
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("B"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("C"))
	endwith
endwith
113
How can I show straight-links

with thisform.Surface1
	.ShowLinksType = 2
	with .Elements
		.Add("Element A").ID = "A"
		.Add("Element B",128,64).ID = "B"
		.Add("Element C",128,-64).ID = "C"
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("B"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("C"))
	endwith
endwith
112
How can I show round-links

with thisform.Surface1
	.ShowLinksType = -1
	with .Elements
		.Add("Element A").ID = "A"
		.Add("Element B",128,64).ID = "B"
		.Add("Element C",128,-64).ID = "C"
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("B"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("C"))
	endwith
endwith
111
I've tried to insert a "<br>" in the Caption property text and it just ignores it

with thisform.Surface1
	.BeginUpdate
	with .Elements
		with .Add("caption")
			.CaptionSingleLine = .F.
			.Caption = "first caption<br>second caption<br>third caption"
		endwith
	endwith
	.EndUpdate
endwith
110
How do I align the extra-caption

with thisform.Surface1
	.BeginUpdate
	with .Elements
		with .Add("caption")
			.AutoSize = .F.
			.Width = 128
			.Height = 64
			.ExtraCaption = "extra-caption"
			.ExtraCaptionAlign = 34
		endwith
	endwith
	.EndUpdate
endwith
109
How can I add an extra caption

with thisform.Surface1
	.BeginUpdate
	with .Elements
		.Add("caption").ExtraCaption = "extra-caption"
	endwith
	.EndUpdate
endwith
108
I am using the reserve-neighbors feature, the question is how to shift left/right the neighbors instead of up/down
with thisform.Surface1
	.BeginUpdate
	.AllowMoveNeighbors = 2
	.Object.DefArrange(0) = 1
	.AllowInsertObject = .F.
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B ( move it )",16,32)
		.Add("Element <sha ;;0>C",128,0)
	endwith
	.EndUpdate
endwith
107
I am using the reserve-neighbors feature, the question is if possible to specify the distance between neighbors
with thisform.Surface1
	.BeginUpdate
	.AllowMoveNeighbors = 1
	.Object.DefArrange(1) = 0
	.Object.DefArrange(2) = 0
	.AllowInsertObject = .F.
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B ( move it )",0,32)
		.Add("Element <sha ;;0>C",0,64)
	endwith
	.EndUpdate
endwith
106
How do I enable the reserve-neighbors feature
with thisform.Surface1
	.BeginUpdate
	.AllowMoveNeighbors = 1
	.AllowInsertObject = .F.
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B ( move it )",0,32)
		.Add("Element <sha ;;0>C",0,64)
	endwith
	.EndUpdate
endwith
105
I've noticed that recently, the elements get compacted once the Arrange method is performed. How can I prevent that

with thisform.Surface1
	with .Elements
		.Add("Element A").ID = "A"
		.Add("Element B").ID = "B"
		.Add("Element C").ID = "C"
		.Add("Element D").ID = "D"
		.Add("Element E").ID = "E"
		.Add("Element E").ID = "F"
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("B"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("C"))
		.Add(thisform.Surface1.Elements.Item("B"),thisform.Surface1.Elements.Item("D"))
		.Add(thisform.Surface1.Elements.Item("B"),thisform.Surface1.Elements.Item("C"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("E"))
		.Add(thisform.Surface1.Elements.Item("A"),thisform.Surface1.Elements.Item("F"))
	endwith
	.Object.DefArrange(4) = .F.
	.Arrange()
endwith
104
Is it possible to add a link to show from bottom/down to top/up, rather that right to left (method-2)

*** AddLink event - A new link has been added to the links collection. ***
LPARAMETERS Link
	with thisform.Surface1
		with Link
		endwith
	endwith

with thisform.Surface1
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",48,48)
	endwith
	with .Links
		.Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
	endwith
endwith
103
Is it possible to add a link to show from bottom/down to top/up, rather that right to left (method-1)

with thisform.Surface1
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",48,48)
	endwith
	with .Links
		with .Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
			.StartPos = 4
			.EndPos = 3
		endwith
	endwith
endwith
102
How do I enable the cross link support ( mixed )

with thisform.Surface1
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",0,76)
		with .Add("Element <sha ;;0>C",-76,32)
			.AutoSize = .F.
			.Height = 32
		endwith
		with .Add("Element <sha ;;0>D",76,32)
			.AutoSize = .F.
			.Height = 32
		endwith
	endwith
	with .Links
		with .Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
			.StartPos = 1
			.EndPos = 1
		endwith
		with .Add(thisform.Surface1.Elements.Item(2),thisform.Surface1.Elements.Item(1))
			.StartPos = 1
			.EndPos = 1
		endwith
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(4))
		with .Add(thisform.Surface1.Elements.Item(4),thisform.Surface1.Elements.Item(3))
			.StartPos = 0
			.EndPos = 2
		endwith
	endwith
	.ShowLinks = 97 && ShowExtendedLinksEnum.exShowCrossLinksMixt Or ShowExtendedLinksEnum.exShowExtendedLinks
endwith
101
How do I enable the cross link support ( triangular )

with thisform.Surface1
	with .Elements
		.Add("Element <sha ;;0>A")
		.Add("Element <sha ;;0>B",0,76)
		with .Add("Element <sha ;;0>C",-76,32)
			.AutoSize = .F.
			.Height = 32
		endwith
		with .Add("Element <sha ;;0>D",76,32)
			.AutoSize = .F.
			.Height = 32
		endwith
	endwith
	with .Links
		with .Add(thisform.Surface1.Elements.Item(1),thisform.Surface1.Elements.Item(2))
			.StartPos = 1
			.EndPos = 1
		endwith
		with .Add(thisform.Surface1.Elements.Item(2),thisform.Surface1.Elements.Item(1))
			.StartPos = 1
			.EndPos = 1
		endwith
		.Add(thisform.Surface1.Elements.Item(3),thisform.Surface1.Elements.Item(4))
		with .Add(thisform.Surface1.Elements.Item(4),thisform.Surface1.Elements.Item(3))
			.StartPos = 0
			.EndPos = 2
		endwith
	endwith
	.ShowLinks = 65 && ShowExtendedLinksEnum.exShowCrossLinksTriangle Or ShowExtendedLinksEnum.exShowExtendedLinks
endwith