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타원형
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Function long CreateEllipticRgn( long lX1, long lY1, long lX2, long lY2 ) Library "gdi32.dll"

Long hRgn
hRgn = CreateEllipticRgn( 0, 0, This.Width/5, This.Height /4)
SetWindowRgn( Handle( This ), hRgn, True )

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Rectangle
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Function long CreateRoundRectRgn( long lX1, long lY1, long lX2, long lY2,long lX3, long lY3 ) Library "gdi32.dll"

Long hRgn
hRgn = CreateRoundRectRgn( 0, 0, This.Width/5, This.Height/4, This.Width/9, This.Height /4)
SetWindowRgn( Handle( This ), hRgn, True )

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네모형
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Function long CreateRectRgn( long lX1, long lY1, long lX2, long lY2 ) Library "gdi32.dll"

Long hRgn
hRgn = CreateRectRgn( 0, 0, This.Width/5, This.Height /4)
SetWindowRgn( Handle( This ), hRgn, True )