VB如何实现透明窗体？

2025-02-06 21:20:02

推荐回答（2个）

回答1：

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 Sub Form_Load()
Me.BorderStyle = 0
Me.Caption = ""
Me.BackColor = vbRed
SetWindowLong Me.hwnd, -20, GetWindowLong(Me.hwnd, -20) Or &H80000
SetLayeredWindowAttributes Me.hwnd, vbRed, 0, 1
End Sub

回答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
Private Const WS_EX_LAYERED = &H80000
Private Const LWA_ALPHA = &H2
Private Const GWL_EXSTYLE = (-20)
Private Const LWA_COLORKEY = &H1
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
在Private Sub Form_Load()中放入：
Dim rtn1 As Long
rtn1 = GetWindowLong(hwnd, GWL_EXSTYLE)
rtn1 = rtn1 Or WS_EX_LAYERED
SetWindowLong hwnd, GWL_EXSTYLE, rtn1
SetLayeredWindowAttributes hwnd, RGB(255, 255, 255), 100, LWA_COLORKEY

最新问答

不锈钢锅烧干了一个小时产生刺鼻气味,有毒么?

曾经谈过两个男朋友都骗我，我长得也不丑就是太善良，别人一说什么我就信，动不动就伸手问我要钱，要不让