📄 findfirstprinterchangenotification.htm
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<td width="100%" height="16">FindFirstPrinterChangeNotification</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 FindFirstPrinterChangeNotification& Lib
"winspool.dll" (ByVal hPrinter As Long, ByVal fdwFlags As Long, ByVal fdwOptions
As Long, pPrinterNotifyOptions As Byte)</td>
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<td width="100%" colspan="2">说明</td>
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<td width="100%" colspan="2">创建一个新的改变通告对象，以便我们注意打印机状态的各种变化</td>
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<td width="100%" colspan="2">返回值</td>
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<td width="100%" colspan="2">Long，执行成功则返回改变通告对象的句柄。INVALID_HANDLE_VALUE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%">hPrinter</td>
<td width="75%">Long，一个已打开的打印机对象的句柄（用OpenPrinter获得）</td>
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<td width="25%">fdwFlags</td>
<td width="75%">Long，来自API32.TXT文件的、带有PRINTER_CHANGE_??前缀的某个常数，它们对要观察的对象进行了描述。如pPrinterNotifyOptions不为零，那么可将这个参数设为零</td>
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<td width="25%">fdwOptions</td>
<td width="75%">Long，保留，设为零</td>
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<td width="25%">pPrinterNotifyOptions</td>
<td width="75%">Byte，指定一个缓冲区，其中包含了一个PRINTER_NOTIFY_OPTIONS结构。而这个结构又包含了指向一个或多个PRINTER_NOTIFY_OPTIONS_TYPE结构的指针。可将这个参数设为零（将声明方式改为ByVal
As Long并传递零值），以便用fdwFlags字段指定想观察的变化</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">以下的声明是从VB的API文本查看器里复制的：<br>
Declare Function FindFirstPrinterChangeNotification Lib "winspool.drv" Alias
"FindFirstPrinterChangeNotification" (ByVal hPrinter As Long, ByVal fdwFlags As
Long, ByVal fdwOptions As Long, ByVal pPrinterNotifyOptions As String) As Long</td>
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<td width="100%"><p align="right">Top</td>
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