VB6.0 透明的窗体怎么弄？
设置：窗体的Borderstyle=0 '此时窗体无边框
然后：
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 Declare Function SetWindowPos& Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal X As Long, ByVal Y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long)
Private Declare Function ReleaseCapture Lib "user32" () As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Const WM_SYSCOMMAND = &H112
Private Const SC_MOVE = &HF010&
Private Const WM_NCLBUTTONDOWN = &HA1
Private Const HTCAPTION = 2
Private Sub Form_Load()
Call SetWindowPos(Me.hwnd, -1, 0, 0, 0, 0, 3)
Me.BackColor = vbred '透明色为红色
SetWindowLong Me.hwnd, -20, GetWindowLong(Me.hwnd, -20) Or &H80000
SetLayeredWindowAttributes Me.hwnd, vbred, 0, 1
end sub
这样的话所有的红色元素都会消失
此时你会无法移动窗体
所以
Private Sub Command1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
ReleaseCapture
SendMessage Me.hwnd, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0
End Sub
这样你按住command1就可以拖动窗体了
VB窗体透明问题！
窗体透明，控件不透明的代码：
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, 0, LWA_COLORKEY
End Sub
窗体逐渐变透明：
'添加一个PicturebBox，依它为容器添加一个shape，背景色设为蓝色
'添加一个时钟控件
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
Const WS_EX_LAYERED = &H80000
Const GWL_EXSTYLE = (-20)
Const LWA_ALPHA = &H2
Const LWA_COLORKEY = &H1
Dim tmd As Long
Private Sub Form_Load()
Show
Shape1.BackColor = &H80000002
Shape1.BackStyle = 1
tmd = 255
Timer1.Interval = 50
Shape1.Width = Picture1.Width
SetWindowLong hwnd, GWL_EXSTYLE, WS_EX_LAYERED
SetLayeredWindowAttributes hwnd, 0, tmd, LWA_ALPHA '越少越透明，限制0-255
End Sub
Private Sub Timer1_Timer()
On Error Resume Next
tmd = tmd - 1
SetLayeredWindowAttributes hwnd, 0, tmd, LWA_ALPHA
Shape1.Width = Shape1.Width - Picture1.Width / 255
If tmd < 0 Then
Timer1.Enabled = False
MsgBox "OK!"
End If
End Sub
