Private Declare Function SetLayeredWindowAttributes Lib "user32.dll" (ByVal hwnd As Long, ByVal crKey As Long, ByVal bAlpha As Byte, ByVal dwFlags As Long) As Boolean 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 GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long Const LWA_ALPHA = 2 Const GWL_EXSTYLE = (-20) Const WS_EX_LAYERED = &H80000Private Sub Form_Load() SetWindowLong hwnd, GWL_EXSTYLE, GetWindowLong(hwnd, GWL_EXSTYLE) Or WS_EX_LAYERED SetLayeredWindowAttributes hwnd, 0, 128, LWA_ALPHA End Sub
是要窗口全透明 + 控件(Textbox)半透明。
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 GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long
Const LWA_ALPHA = 2
Const GWL_EXSTYLE = (-20)
Const WS_EX_LAYERED = &H80000Private Sub Form_Load()
SetWindowLong hwnd, GWL_EXSTYLE, GetWindowLong(hwnd, GWL_EXSTYLE) Or WS_EX_LAYERED
SetLayeredWindowAttributes hwnd, 0, 128, LWA_ALPHA
End Sub