vb 让窗体半透

SKY定格

1. Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
   
2. Private Declare Function SetLayeredWindowAttributes Lib "user32" (ByVal hwnd As Long, ByVal crKey As Long, ByVal bAlpha As Byte, ByVal dwFlags As Long) As Long
   
3. Const WS_EX_LAYERED = &H80000
   
4. Const GWL_EXSTYLE = (-20)
   
5. Const LWA_ALPHA = &H2
   
6. 'Const LWA_COLORKEY = &H1
   
7. Private Sub Form_Load()
   
8.      SetWindowLong Me.hwnd, GWL_EXSTYLE, WS_EX_LAYERED
   
9.      SetLayeredWindowAttributes Me.hwnd, 0, 150, LWA_ALPHA  '150为透明度(0-255)
   
10. End Sub
    

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