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How to make a non transparent control transparent

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How to make a non transparent control transparent

by  MrMoocow  Posted    (Edited  )
Here is the code

Private Const WS_EX_TRANSPARENT = &H20&
Private Const GWL_EXSTYLE = (-20)
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long



Private Function MakeWindowedControlTransparent(ctlControl As Control) As Long
Dim result As Long
ctlControl.Visible = False
result = SetWindowLong(ctlControl.hwnd, GWL_EXSTYLE, WS_EX_TRANSPARENT)
ctlControl.Visible = True ' Use the visible property as a quick VB way of forcing a repaint with the new style
MakeWindowedControlTransparent = result
End Function


This will make a progress bar some transparent(so the area the bar isn't shows the form)

MakeWindowedControlTransparent ProgressBar1

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