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📄 getprinterdriver.htm

📁 vb的api函数
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    <td width="100%" height="16">GetPrinterDriver</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 GetPrinterDriver Lib 
    &quot;winspool.drv&quot; Alias &quot;GetPrinterDriverA&quot; (ByVal hPrinter As Long, 
    ByVal pEnvironment As String, ByVal Level As Long, pDriverInfo As Byte, ByVal cdBuf As 
    Long, pcbNeeded As Long) As Long</td>
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    <td width="100%" colspan="2">说明</td>
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    <td width="100%" colspan="2">针对指定的打印机,获取与打印机驱动程序有关的信息</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%">hPrinter</td>
    <td width="75%">Long,一个已打开的打印机的句柄(用OpenPrinter获得)</td>
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    <td width="25%">pEnvironment</td>
    <td width="75%">String,欲获取的驱动程序环境(如:Windows NT x86)。如设为vbNullString,表示使用当前(本地)系统环境</td>
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    <td width="25%">Level</td>
    <td width="75%">Long,1,2或3(仅适用于Windows 95 和 NT 4.0)</td>
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    <td width="25%">pDriverInfo</td>
    <td width="75%">Byte,载入一个 DRIVER_INFO_x结构的缓冲区。其中的x代表级别(Level)设置</td>
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    <td width="25%">cbBuf</td>
    <td width="77%">Long,pDriverInfo缓冲区中的字符数量</td>
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    <td width="25%">pcbNeeded</td>
    <td width="77%">Long,指向一个Long型变量的指针,该变量用于保存请求的缓冲区长度,或者实际读入的字节数量</td>
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