Type | Description | |||
ID as Long | A Long expression that indicates the index of the skin being added or replaced. The value must be between 1 and 126, so Appearance collection should holds no more than 126 elements. | |||
Skin as Variant |
A string expression that may indicates one of the following:
|
Return | Description | |||
Boolean | A Boolean expression that indicates whether the new skin was added or replaced. |
The identifier you choose for the skin is very important to be used in the background properties like explained bellow. Shortly, the color properties uses 4 bytes ( DWORD, double WORD, and so on ) to hold a RGB value. More than that, the first byte ( most significant byte in the color ) is used only to specify system color. if the first bit in the byte is 1, the rest of bits indicates the index of the system color being used. So, we use the last 7 bits in the high significant byte of the color to indicates the identifier of the skin being used. So, since the 7 bits can cover 127 values, excluding 0, we have 126 possibilities to store an identifier in that byte. This way, a DWORD expression indicates the background color stored in RRGGBB format and the index of the skin ( ID parameter ) in the last 7 bits in the high significant byte of the color. For instance, the BackColor = BackColor Or &H2000000 indicates that we apply the skin with the index 2 using the old color, to the object that BackColor is applied.
The skin method may change the visual appearance for the following parts in the control:
For instance, the following VB sample changes the visual appearance for the selected item. The SelBackColor property indicates the selection background color. Shortly, we need to add a skin to the Appearance object using the Add method, and we need to set the last 7 bits in the SelBackColor property to indicates the index of the skin that we want to use. The sample applies the "" to the selected item(s):
With ExMenu1 With .VisualAppearance .Add &H23, App.Path + "\selected.ebn" End With .SelForeColor = RGB(0, 0, 0) .SelBackColor = &H23000000 End With
The following C++ sample applies a new appearance to the selected item(s):
#include "Appearance.h" m_menu.GetVisualAppearance().Add( 0x23, COleVariant(_T("D:\\Temp\\ExMenu_Help\\selected.ebn")) ); m_menu.SetSelBackColor( 0x23000000 ); m_menu.SetSelForeColor( 0 );
The following VFP sample applies a new appearance to the selected item(s):
With thisform.ExMenu1 With .VisualAppearance .Add(35, "D:\Temp\ExMenu_Help\selected.ebn") EndWith .SelForeColor = RGB(0, 0, 0) .SelBackColor = 587202560 EndWith
The 587202560 value represents &23000000 in hexadecimal. The 32 value represents &23 in hexadecimal