Private Const GWL_EXSTYLE As Long = (-20)
Private Const LWA_ALPHA As Long = &H2
Private Const WS_EX_LAYERED As Long = &H80000
Private Declare Function FindWindowA Lib "user32" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long
Private Declare Function SetLayeredWindowAttributes Lib "user32" (ByVal hwnd As Long, ByVal crKey As Long, ByVal bAlpha As Byte, ByVal dwFlags As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Public Sub SetFormTransparence(ByVal sUserformCaption As String, ByVal bTransparent As Boolean)
Dim lHwnd As Long
Dim lStyle As Long
lHwnd = FindWindowA("Thunder" & IIf(Application.Version Like "8*", "X", "D") & "Frame", sUserformCaption)
If lHwnd <> 0 Then
lStyle = GetWindowLong(lHwnd, GWL_EXSTYLE)
If lStyle <> (lStyle Or WS_EX_LAYERED) Then Call SetWindowLong(lHwnd, GWL_EXSTYLE, lStyle Or WS_EX_LAYERED)
Call SetLayeredWindowAttributes(lHwnd, 0&, IIf(bTransparent, 127, 255), LWA_ALPHA)
End If
End Sub