Bitmap loaded to tabControl or bitmap loaded to treeview, etc. only work in opaque mode.
BmpResource(bitmap) added to menuitem also alone works in opaque mode.
This is my code:
Dim btmBitmap As Bitmap
With btmBitmap
Height=16
Width=16
Transparent=True
`gray transparent color
Transparentcolor=Rgb(192,192,192)
`TransparentMode=TmAuto
Loadfromfile("bitmap.bmp")
End With
Object frmForm As Form
Caption="Form1"
Height=480
Width=640
Center
`Otros objetos
Object trvTreeview As Treeview
Left=10
Top=10
Width=200
Height=150
`Sorted=True
Additem("Item1",-1)
Additem("Item2",-1)
Additem("SubItem1",0)
Additem("SubItem3",2)
`Only work in opaque mode
Addbmp(0,btmBitmap)
Bmpindex(0)=0
`OnChange=trvTreeview_Onchange
End Object
Object tabTabcontrol As Tabcontrol
`Align=alLeft
Left=10
Top=10
Width=200
Height=150
`Multiline=True
Addtab("Tab1")
Addtab("Tab2")
`Only work in opaque mode
Addbmp(btmBitmap)
`OnChange=tabTacontrol_Onchange
End Object
`Fin otros objetos
`OnShow=frmForm_OnShow
`OnClose=frmForm_OnClose
End Object
frmForm.showmodal