?? ptvisible.htm
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<td width="100%" height="16">PtVisible</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 PtVisible Lib "gdi32" Alias
"PtVisible" (ByVal hdc As Long, ByVal x As Long, ByVal y 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">確定指定點是否可見（即，點是否在設備場景剪裁區內）</td>
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<td width="100%" colspan="2">返回值</td>
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<td width="100%" colspan="2">Long，若點在指定設備場景剪裁區內為非零值，否則為0</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%">hdc</td>
<td width="75%">Long，設備場景句柄</td>
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<td width="25%">x</td>
<td width="75%" rowspan="2">Long，要檢查的點的x,y坐標</td>
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<td width="25%">y</td>
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