?? invalidatergn.htm
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<td width="100%" height="16">InvalidateRgn</td>
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<td width="100%" colspan="2">VB聲明</td>
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<td width="100%" colspan="2">Declare Function InvalidateRgn Lib "user32" Alias
"InvalidateRgn" (ByVal hwnd As Long, ByVal hRgn As Long, ByVal bErase As Long)
As Long</td>
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<td width="100%" colspan="2">說明</td>
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<td width="100%" colspan="2">使窗口指定區域不活動，并將它加入窗口刷新區，使之可隨后被重畫</td>
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<td width="100%" colspan="2">返回值</td>
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<td width="100%" colspan="2">Long，TRUE</td>
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<td width="100%" colspan="2">參數表</td>
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<td width="25%">參數</td>
<td width="75%">類型及說明</td>
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<td width="25%">hwnd</td>
<td width="75%">Long，窗口句柄</td>
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<td width="25%">hRgn</td>
<td width="75%">Long，不活動區域句柄，該區域以窗口客戶坐標定義。若該句柄為0，則將使整個窗口客戶區不活動</td>
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<td width="25%">bErase</td>
<td width="75%">Long，為非零值則表示要在刷新前擦除</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">若bErase為TRUE，則刷新前整個刷新區都將被擦除而不只是定義的區域</td>
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