📄 gettextextentpoint.htm
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<title>GetTextExtentPoint</title>
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<td width="100%" height="16">GetTextExtentPoint, GetTextExtentPoint32</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 GetTextExtentPoint& Lib
"gdi32" Alias "GetTextExtentPointA" (ByVal hdc As Long, ByVal
lpszString As String, ByVal cbString As Long, lpSize As SIZE)<br>
Declare Function GetTextExtentPoint32& Lib "gdi32" Alias
"GetTextExtentPoint32A" (ByVal hdc As Long, ByVal lpsz As String, ByVal cbString
As Long, lpSize As SIZE)</td>
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<td width="100%" colspan="2">说明</td>
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<td width="100%" colspan="2">判断一个字串的大小（范围）。在Win32环境中，最好使用GetTextExtentPoint32，它提供了更精确的计算结果</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">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%">hdc</td>
<td width="75%">Long，设备场景的句柄</td>
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<td width="25%">lpszString</td>
<td width="75%">String，欲度量其范围（extent）的一个字串</td>
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<td width="25%">cbString</td>
<td width="75%">Long，lpszString字串的长度</td>
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<td width="25%">lpSize</td>
<td width="75%">SIZE，这个结构用于装载字串范围的高度和宽度信息</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">这个函数不会将剪切区考虑在内，但却考虑到了由<a
href="SetTextCharacterExtra.htm">SetTextCharacterExtra</a>函数设置的任何额外空间（间距）</td>
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