VB中的PictureBox背景透明效果VB中的PictureBox背景透明效果Private Declare Function BitBlt Lib "gdi32 " (ByVal hDestDC As Long, ByVal X As L
ong, ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC
As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Lo...
VB中的PictureBox背景透明效果Private Declare Function BitBlt Lib "gdi32 " (ByVal hDestDC As Long, ByVal X As L
ong, ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC
As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Long
Private Const SRCCOPY = &HCC0020 ' (DWORD) dest = source Dim dx As Long, dy As Long
Private Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y A
s Single)
dx = X
dy = Y
End Sub
Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y A
s Single)
If Button = vbLeftButton Then
Me.Move X + Me.Left - dx, Y + Me.T op - dy
End If
End Sub
Private Sub Timer1_Timer()
Picture1.Move X + Picture1.Left - dx, Y + Picture1.T op - dy Picture1.Visible = False
Picture1.AutoRedraw = True
Me.Refresh
BitBlt Picture1.hDC, 0, 0, 300, 300, Me.hDC, (Picture1.Left) / Screen.Tw
ipsPerPixelX, (Picture1.Top) / Screen.TwipsPerPixelY, SRCCOPY Picture1.Visible = True
Timer1.Enabled = False
End Sub
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