📄 findnextprinterchangenotification.htm
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<td width="100%" height="16"><a name="FindNextPrinterChangeNotification">FindNextPrinterChangeNotification</a></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 FindNextPrinterChangeNotification& Lib
"winspool.dll" (ByVal hChange As Long, pdwChange As Long, ByVal pvReserved As
Long, ByVal ppPrinterNotifyInfo As Long)</td>
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<td width="100%" colspan="2">说明</td>
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<td width="100%" colspan="2">用这个函数判断触发一次打印机改变通告信号的原因</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%">hChange</td>
<td width="75%">Long，一个打印机通告改变对象的句柄</td>
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<td width="25%">pdwChange</td>
<td width="75%">Long，指定用于装载特定标志的一个Long型值，该标志标志着信号的来源。请在API32.TXT文件中寻找以PRINTER_CHANGE_???前缀开头的常数</td>
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<td width="25%">pvReserved</td>
<td width="75%">Long，指定一个PRINTER_NOTIFY_OPTIONS结构的地址。如这个结构的Flags字段设为PRINTER_NOTIFY_OPTIONS_REFRESH，那么ppPrinterNotifyInfo缓冲区就会载入正在监视的所有事件的状态——并不仅是那些触发了通告信号的事件。结构中所有其他字段会被忽略。可设为NULL（零），表示只返回与状态改变有关信息</td>
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<td width="25%">ppPrinterNotifyInfo</td>
<td width="75%">Long，由系统分配的一个缓冲区的地址。完成后，应该用<a
href="FreePrinterNotifyInfo.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/FreePrinterNotifyInfo.htm">FreePrinterNotifyInfo</a>函数将这个缓冲区删除。缓冲区内包含了一个PRINTER_NOTIFY_INFO结构，其后跟随一系列PRINTER_NOTIFY_INFO_DATA结构（具体数量由第一个结构决定）</td>
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<td width="100%" colspan="2">适用平台</td>
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<td width="100%" colspan="2"><p align="left">Windows NT</td>
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<td width="100%" colspan="2">其他</td>
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<td width="100%" colspan="2">在VB的API文本查看器中复制的声明如下：<br>
Declare Function FindNextPrinterChangeNotification Lib "winspool.drv" Alias
"FindNextPrinterChangeNotification" (ByVal hChange As Long, pdwChange As Long,
ByVal pvReserved As String, ByVal ppPrinterNotifyInfo As Long) As Long</td>
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<td width="100%"><p align="right"><a href="#FindNextPrinterChangeNotification">Top</a></td>
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