📄 mapwindowpoints.htm
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<title>MapWindowPoints</title>
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<td width="100%" height="16"><a name="MapWindowPoints">MapWindowPoints</a></td>
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<td width="100%" colspan="2">VB声明</td>
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<td width="100%" colspan="2">Declare Function MapWindowPoints& Lib "user32"
(ByVal hwndFrom As Long, ByVal hwndTo As Long, lppt As POINTAPI, ByVal cPoints As Long)</td>
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<td width="100%" colspan="2">说明</td>
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<td width="100%" colspan="2">将一个窗口客户区坐标的点转换到另一窗口的客户区坐标系统（在vb里使用：无论向函数传递单独一个点，还是传递数组中的第一个<a
href="POINTAPI.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/POINTAPI.htm">POINTAPI</a>结构，都要特别谨慎。数组中的条目数量至少等于由cPoints参数指定的数量）</td>
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<td width="100%" colspan="2">返回值</td>
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<td width="100%" colspan="2">Long，低字代表映射过程中添加给每个点的水平偏移，高字则代表垂直偏移</td>
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<td width="100%" colspan="2">参数表</td>
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<td width="25%">参数</td>
<td width="75%">类型及说明</td>
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<td width="25%">hwndFrom</td>
<td width="75%">Long，定义源坐标的窗口。用零或桌面窗口句柄指定屏幕坐标</td>
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<td width="25%">hwndTo</td>
<td width="75%">Long，定义目标坐标的窗口。用零或桌面窗口句柄指定屏幕坐标</td>
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<td width="25%">lppt</td>
<td width="75%"><a href="POINTAPI.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/POINTAPI.htm">POINTAPI</a>，点结构中待转换的第一个条目。注意<a
href="RECT.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/RECT.htm">RECT</a>结构在内存中组织成两个连续的<a href="POINTAPI.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/POINTAPI.htm">POINTAPI</a>结构。这样就可为该函数创建一个别名，并使用<a
href="RECT.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/RECT.htm">RECT</a>结构；而不是<a href="POINTAPI.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/POINTAPI.htm">POINTAPI</a>结构。如这样做时，注意将cPoints的值加倍</td>
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<td width="25%">cPoints</td>
<td width="75%">Long，欲转换的点数</td>
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<td width="100%" colspan="2">注解</td>
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<td width="100%" colspan="2"><p align="left">在vb自带的api查看器中复制的声明为：Declare
Function MapWindowPoints Lib "user32" Alias "MapWindowPoints" (ByVal
hwndFrom As Long, ByVal hwndTo As Long, lppt As Any, ByVal cPoints As Long) As Long，请注意：lppt
As Any</td>
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<td width="100%"><p align="right"><a href="#MapWindowPoints">Top</a></td>
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