📄 trackpopupmenuex.htm
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<title>TrackPopupMenuEx</title>
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<td width="100%" height="16">TrackPopupMenuEx</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 TrackPopupMenuEx Lib "user32"
Alias "TrackPopupMenuEx" (ByVal hMenu As Long, ByVal un As Long, ByVal n1 As
Long, ByVal n2 As Long, ByVal hWnd As Long, lpTPMParams As TPMPARAMS) As Long</td>
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<td width="100%" colspan="2">说明</td>
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<td width="100%" colspan="2">与<a href="TrackPopupMenu.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/TrackPopupMenu.htm">TrackPopupMenu</a>相似，只是它提供了额外的功能</td>
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<td width="100%" colspan="2">返回值</td>
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<td width="100%" colspan="2">Long，非零表示成功，零表示失败。会设置<a
href="GetLastError.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/GetLastError.htm">GetLastError</a></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%">hMenu</td>
<td width="75%">Long，弹出式菜单的句柄</td>
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<td width="25%">un</td>
<td width="75%">Long，定位标志和鼠标追踪标志的组合。参考<a
href="TrackPopupMenu.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/TrackPopupMenu.htm">TrackPopupMenu</a>，另外还包括两个标志：TPM_HORIZONTAL或TPM_VERTICAL。参考lpTPMParams参数的说明</td>
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<td width="25%">n1,n2</td>
<td width="75%">Long，定义了弹出式菜单位置的一个x,y点（n1,n2），用屏幕坐标表示</td>
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<td width="25%">hWnd</td>
<td width="75%">Long，用于接收弹出式菜单命令的窗口的句柄。应该使用特定窗体的窗口句柄，该窗体有一个菜单能够与弹出式菜单一样接收相同的命令ID集</td>
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<td width="25%">lpTPMParams</td>
<td width="75%"><a href="TPMPARAMS.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/TPMPARAMS.htm">TPMPARAMS</a>，指向一个<a
href="TPMPARAMS.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/TPMPARAMS.htm">TPMPARAMS</a>结构的指针。这个结构包含了一个矩形，规定了不能由这个弹出式菜单覆盖的区域。如果在un参数中指定了TPM_HORIZONTAL标志，windows就会试着设置水平位置，将弹出式菜单垂直移到这个矩形的外部。如指定了TPM_VERTICAL，那么windows会试着水平移动弹出式菜单的位置</td>
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<td width="100%"><p align="right">Top</td>
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