public static GetCvPort.PRINTER_INFO_2 GetPrinterInfo(string printerName)
{
IntPtr hPrinter = new IntPtr();
if (!GetCvPort.OpenPrinter(printerName, ref hPrinter, (long)IntPtr.Zero))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
IntPtr num = IntPtr.Zero;
try
{
int pcbNeeded1 = new int();
GetCvPort.GetPrinter(hPrinter, 2, IntPtr.Zero, 0, ref pcbNeeded1);
if (pcbNeeded1 <= 0)
{
throw new Exception("Fail!!");
}
num = Marshal.AllocHGlobal(pcbNeeded1);
int pcbNeeded2 = new int();
if (!GetCvPort.GetPrinter(hPrinter, 2, num, pcbNeeded1, ref pcbNeeded2))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
object structure = Marshal.PtrToStructure(num, typeof(GetCvPort.PRINTER_INFO_2));
GetCvPort.PRINTER_INFO_2 printerInfo2 = new PRINTER_INFO_2();
return(structure != null ? (GetCvPort.PRINTER_INFO_2)structure : printerInfo2);
}
finally
{
GetCvPort.ClosePrinter(hPrinter);
Marshal.FreeHGlobal(num);
}
}
public static string GetPortName(ref string strPrinterDeviceName)
{
int dwLevel = 5;
IntPtr hPrinter = new IntPtr();
if (!GetCvPort.OpenPrinter(strPrinterDeviceName, ref hPrinter, (long)IntPtr.Zero))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
IntPtr zero = IntPtr.Zero;
try
{
int pcbNeeded1 = new int();
GetCvPort.GetPrinter(hPrinter, dwLevel, (IntPtr)Conversions.ToLong((string)null), 0, ref pcbNeeded1);
if (pcbNeeded1 <= 0)
{
throw new Exception("error!");
}
IntPtr pPrinter = Marshal.AllocHGlobal(pcbNeeded1);
int pcbNeeded2 = new int();
if (!GetCvPort.GetPrinter(hPrinter, dwLevel, pPrinter, pcbNeeded1, ref pcbNeeded2))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
GetCvPort.PRINTER_INFO_2 printerInfo = GetCvPort.GetPrinterInfo(strPrinterDeviceName);
if (((ulong)printerInfo.Attributes & 2048UL & (ulong)-(((long)printerInfo.Attributes & 1024L) == 0L ? 1 : 0)) > 0UL && printerInfo.pDriverName.IndexOf("DS-RX1") != -1)
{
return(printerInfo.pPortName);
}
return("");
}
finally
{
GetCvPort.ClosePrinter(hPrinter);
}
}