private static bool GetPrinterInfo2(string printerName, out int cJobs, out int status)
{
SafePrinterHandle printer = null;
try
{
int needed = 0;
if (OpenPrinter(printerName, out printer, IntPtr.Zero) &&
!GetPrinter(printer, 2, IntPtr.Zero, 0, out needed))
{
int lastWin32Error = Marshal.GetLastWin32Error();
if (lastWin32Error == ERROR_INSUFFICIENT_BUFFER)
{
IntPtr pPrinter = Marshal.AllocHGlobal((int)needed);
try
{
if (GetPrinter(printer, 2, pPrinter, needed, out needed))
{
PRINTER_INFO_2 printerInfo2 = (PRINTER_INFO_2)Marshal.PtrToStructure(pPrinter, typeof(PRINTER_INFO_2));
cJobs = printerInfo2.cJobs;
status = printerInfo2.Status;
return(true);
}
}
finally
{
Marshal.FreeHGlobal(pPrinter);
}
}
}
}
finally
{
if (printer != null)
{
printer.Close();
}
}
cJobs = 0;
status = 0;
return(false);
}
private static extern bool OpenPrinter(string pPrinterName, out SafePrinterHandle hPrinter, IntPtr pDefault);
private static extern bool OpenPrinter(string pPrinterName, out SafePrinterHandle hPrinter, IntPtr pDefault);
private static extern bool GetPrinter(SafePrinterHandle hPrinter, int dwLevel, IntPtr pPrinter, int cbBuf, out int pcbNeeded);
private static extern bool GetPrinter(SafePrinterHandle hPrinter, int dwLevel, IntPtr pPrinter, int cbBuf, out int pcbNeeded);
