The LayoutStartChanging event may occurs in the following situations:

• exLayoutResizePanels(0), one of the panels is being resized. The PaneWidth property indicates the width of the left/right panel. 
• exCalendarSelectionChange(1), specifies whether the selection in the calendar panel is changing. The Selection property of the Calendar returns a safe array of selected dates. The /NET or /WPF version provides the SelDates property of List<DateTime> type to get or sets the new selection using a collection of DateTime objects.
• exCalendarFocusDateChange(2), specifies whether the focused date in the calendar panel is changing. The FocusDate property indicates the date being focused in the calendar. The AllowFocusDate property specifies the combination of keys that allows the user to focus a new date, in the calendar panel. The Background(exCalendarFocusDate) changes the visual appearance of the focused date, while the Background(exCalendarFocusDateForeColor) changes the foreground color of the focused date.
• exCalendarDateChange(3), notifies whether the browsing date in the calendar panel is changing. The Date property indicates the month date being browsed in the calendar. The FirstVisibleDate/LastVisibleDate property indicates the first visible date in the calendar panel.
• exScheduleMove(4), notifies once the user is about to move the schedule view to a new position by drag and drop. By default, you can press the SHIFT + Click and drag the schedule view to a new position. The AllowMoveSchedule property indicates the keys combination so the user can move the schedule to a new position.
• exScheduleResize(5), occurs once the schedule view is resizing. By default, you can click the middle mouse button, and drag the cursor to a new position, so the schedule view gets zoomed or resized. The AllowResizeSchedule property indicates the keys combination so the user can resize the schedule view at runtime.
• exScheduleResizeTimeScale(6), notifies once the user is resizing the control's time scale.  The TimeScales property access the control's TimeScale objects.
• exLayoutCalendarAutoHide(7), notifies your application once the calendar panel is shown or hidden. The OnResizeControl property on exCalendarAutoHide makes the calendar goes away if the cursor is not in it. The PaneWidth property indicates the width of the left/right panel. For instance, the PaneWidth(False) on 0, indicates that the calendar panel is hidden, or if it not zero, the calendar panel is shown. You can call the FitSelToView method during this operation so the schedule fits the selected dates in its client area.
• exScheduleCreateEvent(8), occurs once a new event is creating using the mouse. The AddEvent event notifies your application once a new event is added to the schedule view.
• exScheduleResizeGroup(9), specifies whether the user is resizing a group. The user can resize a group by clicking the groups header between two groups, and start dragging the cursor to a new position, and so the group is being resized.
• exScheduleSelectionChange(10), indicates whether the user is about to select events in the schedule panel. The Selection property gets or sets a safe array of selected events. The /NET or /WPF version provides the SelEvents property of List<Event> type to get or sets the new selection using a collection of Event objects.
• exScheduleMoveEvent(11), indicates whether the user is about to move events in the schedule panel. The control fires the UpdateEvent event once the margin of the events are being updated.
• exScheduleResizeStartEvent(12), indicates whether the user is about to resize the starting point of the event. The control fires the UpdateEvent event once the margin of the events are being updated.
• exScheduleResizeEndEvent(13), indicates whether the user is about to resize the ending point of the event. The control fires the UpdateEvent event once the margin of the events are being updated.
• exScheduleMoveMarkTime(14), indicates whether the user is about to move a MarkTime object. The Movable property of the MarkTime object indicates whether the user can move at runtime the MarkTime object using the Mouse. The MarkTimeFromPoint(-1,-1) property indicates the MarkTime object from the cursor.
• exScheduleEditEvent(15), indicates whether the user edits the event's caption. The event notifies once the user starts inline editing an appointment. The Editable property of the Event indicates the property of the Event to be edited at runtime. You can use the EventFromPoint(-1,-1) method during the LayoutStartChanging( exScheduleEditEvent) to store the event from the cursor to a global member, and when LayoutEndChanging( exScheduleEditEvent) occurs, you can use the previously stored member to identify the event being edited.
• exScheduleMoveGroup,(18), 

private void LayoutStartChanging(object sender,exontrol.EXSCHEDULELib.LayoutChangingEnum Operation)
{
}

Private Sub LayoutStartChanging(ByVal sender As System.Object,ByVal Operation As exontrol.EXSCHEDULELib.LayoutChangingEnum) Handles LayoutStartChanging
End Sub

private void LayoutStartChanging(object sender, AxEXSCHEDULELib._IScheduleEvents_LayoutStartChangingEvent e)
{
}

void OnLayoutStartChanging(long Operation)
{
}

void __fastcall LayoutStartChanging(TObject *Sender,Exschedulelib_tlb::LayoutChangingEnum Operation)
{
}

procedure LayoutStartChanging(ASender: TObject; Operation : LayoutChangingEnum);
begin
end;

procedure LayoutStartChanging(sender: System.Object; e: AxEXSCHEDULELib._IScheduleEvents_LayoutStartChangingEvent);
begin
end;

begin event LayoutStartChanging(long Operation)
end event LayoutStartChanging

Private Sub LayoutStartChanging(ByVal sender As System.Object, ByVal e As AxEXSCHEDULELib._IScheduleEvents_LayoutStartChangingEvent) Handles LayoutStartChanging
End Sub

Private Sub LayoutStartChanging(ByVal Operation As EXSCHEDULELibCtl.LayoutChangingEnum)
End Sub

Private Sub LayoutStartChanging(ByVal Operation As Long)
End Sub

LPARAMETERS Operation

PROCEDURE OnLayoutStartChanging(oSchedule,Operation)
RETURN

<SCRIPT EVENT="LayoutStartChanging(Operation)" LANGUAGE="JScript">
</SCRIPT>

<SCRIPT LANGUAGE="VBScript">
Function LayoutStartChanging(Operation)
End Function
</SCRIPT>

Procedure OnComLayoutStartChanging OLELayoutChangingEnum llOperation
	Forward Send OnComLayoutStartChanging llOperation
End_Procedure

METHOD OCX_LayoutStartChanging(Operation) CLASS MainDialog
RETURN NIL

void onEvent_LayoutStartChanging(int _Operation)
{
}

function LayoutStartChanging as v (Operation as OLE::Exontrol.Schedule.1::LayoutChangingEnum)
end function

function nativeObject_LayoutStartChanging(Operation)
return