试试 这个:
===================================================================
Private Sub UserControl_Paint()
Line (0, 0)-(ScaleWidth, ScaleHeight), UserControl.ForeColor, BFEnd SubPrivate Sub UserControl_Resize()
UserControl.AutoRedraw = True
Line (0, 0)-(ScaleWidth, ScaleHeight), vbWhite, BF
UserControl.FillColor = vbBlack
UserControl.FillStyle = 0
Circle (ScaleWidth / 2, ScaleHeight / 2), (ScaleWidth + ScaleHeight) /
4, vbBlack
UserControl.MaskColor = vbBlack 'Black =
transparent
Set UserControl.MaskPicture = UserControl.Image 'Save mask
UserControl.AutoRedraw = False
End Sub
===================================================================
Private Sub UserControl_Paint()
Line (0, 0)-(ScaleWidth, ScaleHeight), UserControl.ForeColor, BFEnd SubPrivate Sub UserControl_Resize()
UserControl.AutoRedraw = True
Line (0, 0)-(ScaleWidth, ScaleHeight), vbWhite, BF
UserControl.FillColor = vbBlack
UserControl.FillStyle = 0
Circle (ScaleWidth / 2, ScaleHeight / 2), (ScaleWidth + ScaleHeight) /
4, vbBlack
UserControl.MaskColor = vbBlack 'Black =
transparent
Set UserControl.MaskPicture = UserControl.Image 'Save mask
UserControl.AutoRedraw = False
End Sub
解决方案 »
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