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Visual Basic (Microsoft) Versions 5/6 FAQ

Access Version or Conversion

How to make a non transparent control transparent by MrMoocow
Posted: 21 Aug 01

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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