vb: how to make transparent form?

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How to make transparent form?

The following is the code to make transparent form:


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Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" _
(ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long

Const WS_EX_TRANSPARENT = &H20&
Const GWL_EXSTYLE = (-20)

Private Sub Form_Load()
Dim retval
retval = SetWindowLong(Form1.hwnd, GWL_EXSTYLE, WS_EX_TRANSPARENT)
End Sub