【VB】窗体透明一：窗体透明，控件不透明

Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long,ByVal nIndex 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
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 Const WS_EX_LAYERED = &H80000
Private Const GWL_EXSTYLE = (-20)
Private Const LWA_ALPHA = &H2
Private Const LWA_COLORKEY = &H1
Private Sub Form_Load()
   Me.BackColor = &HFF0000
   Dim rtn As Long
   Dim BorderStyler
   BorderStyler = 0
   rtn = GetWindowLong(hwnd,GWL_EXSTYLE)
   rtn = rtn Or WS_EX_LAYERED
   SetWindowLong hwnd,GWL_EXSTYLE,rtn
   SetLayeredWindowAttributes hwnd,&HFF0000,LWA_COLORKEY
End Sub

（编辑：李大同）

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