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    <title>关于不规则区域....?</title>
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      <h1>关于不规则区域....?</h1>
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Posted by <a href="mailto:harlem73@ms26.hinet.net">哈林</a> on September 27, 1998 at 18:01:51:<p>
我想要判断Mouse是否处于一椭圆形的区域内,<br>如果Mouse移到MMRgn的椭圆形区域内时显示图片<br>但是却得不到想要的结果,是不是做错了?<br>请高手指点!感激不尽!<p>以下为程式码:<p>Option Explicit<br>Private Declare Function CreateEllipticRgn Lib "gdi32"_ <br>(ByVal x1 As Long, ByVal y1 As Long, ByVal X2 As Long,_ <br>ByVal Y2 As Long) As Long<br>Private Declare Function PtInRegion Lib "gdi32"_ <br>(ByVal hRgn As Long, ByVal X As Long, ByVal Y As Long) As Long<br>Dim MMRgn As Long<p>MMRgn = CreateEllipticRgn(Img1.Left, Img1.Top, Img1.Left + Img1.Width, Img1.Top + Img1.Height)<br>If PtInRegion(MMRgn, x, y) Then<br>   Img1.Picture = Pic1.Picture<br>Else<br>   Img1.Picture = LoadPicture("")<br>End If<br>
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