?? setclasslong.htm
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<title>SetClassLong</title>
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<td width="100%" height="16"><a name="SetClassLong">SetClassLong</a></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 SetClassLong Lib "user32" Alias
"SetClassLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As )
As Long</td>
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<td width="100%" colspan="2">說(shuō)明</td>
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<td width="100%" colspan="2">為窗口類(lèi)設(shè)置一個(gè)Long變量條目</td>
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<td width="100%" colspan="2">返回值</td>
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<td width="100%" colspan="2">Long，由nIndex指定的的類(lèi)信息的前一個(gè)值。零表示出錯(cuò)。會(huì)設(shè)置<a
href="GetLastError.htm">GetLastError</a></td>
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<td width="100%" colspan="2">參數(shù)表</td>
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<td width="25%">參數(shù)</td>
<td width="75%">類(lèi)型及說(shuō)明</td>
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<td width="25%">hwnd</td>
<td width="75%">Long，欲為其設(shè)置類(lèi)信息的那個(gè)窗口的句柄</td>
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<td width="25%">nIndex</td>
<td width="75%">Long，參考<a href="GetClassLong.htm">GetClassLong</a>函數(shù)的nIndex參數(shù)說(shuō)明</td>
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<td width="25%">dwNewLong</td>
<td width="75%">Long，類(lèi)信息的新值，具體取決于nIndex</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">使用這個(gè)函數(shù)一定要小心。記住，這里的變動(dòng)會(huì)影響指定類(lèi)的所有窗口，但除非窗口重畫(huà)，否則那個(gè)變動(dòng)不會(huì)顯露出來(lái)</td>
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<td width="100%"><p align="right"><a href="#SetClassLong">Top</a></td>
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