📄 combinergn.htm
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<title>CombineRgn</title>
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<td width="100%" height="16"><a name="CombineRgn">CombineRgn</a></td>
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<td width="100%" colspan="3">VB声明</td>
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<td width="100%" colspan="3">Declare Function CombineRgn Lib "gdi32" Alias
"CombineRgn" (ByVal hDestRgn As Long, ByVal hSrcRgn1 As Long, ByVal hSrcRgn2 As
Long, ByVal nCombineMode As Long) As Long</td>
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<td width="100%" colspan="3">说明</td>
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<td width="100%" colspan="3">将两个区域组合为一个新区域</td>
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<td width="100%" colspan="3">返回值</td>
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<td width="100%" colspan="3">Long，下列常数之一：<br>
COMPLEXREGION：区域有互相交叠的边界<br>
SIMPLEREGION：区域边界没有互相交叠<br>
NULLREGION：区域为空<br>
ERRORAPI：不能创建组合区域</td>
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<td width="100%" colspan="3">参数表</td>
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<td width="25%">参数</td>
<td width="75%" colspan="2">类型及说明</td>
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<td width="25%">hDestRgn</td>
<td width="75%" colspan="2">Long，包含组合结果的区域句柄</td>
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<td width="25%">hSrcRgn1</td>
<td width="75%" colspan="2">Long，源区域1</td>
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<td width="25%">hSrcRgn2</td>
<td width="75%" colspan="2">Long，源区域2</td>
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<td width="25%" rowspan="6">nCombineMode</td>
<td width="75%" colspan="2">Long，组合两区域的方法。可设为下述常数</td>
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<td width="38%">RGN_AND</td>
<td width="37%">hDestRgn被设置为两个源区域的交集</td>
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<td width="38%">RGN_COPY</td>
<td width="37%">hDestRgn被设置为hSrcRgn1的拷贝</td>
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<td width="38%">RGN_DIFF</td>
<td width="37%">hDestRgn被设置为hSrcRgn1中与hSrcRgn2不相交的部分</td>
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<td width="38%">RGN_OR</td>
<td width="37%">hDestRgn被设置为两个区域的并集</td>
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<td width="38%">RGN_XOR</td>
<td width="37%">hDestRgn被设置为除两个源区域OR之外的部分</td>
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<td width="100%"><p align="right"><a href="#CombineRgn">Top</a></td>
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