public static PRINTER_INFO_1[] MyEnumPrinters(PrinterEnumFlags Flags)
{
uint cbNeeded = 0;
uint cReturned = 0;
IntPtr pPrInfo4 = IntPtr.Zero;
uint size = 0;
if (EnumPrinters(Flags, null, 1, IntPtr.Zero, size, ref cbNeeded, ref cReturned))
{
return new PRINTER_INFO_1[] { };
}
if (cbNeeded != 0)
{
pPrInfo4 = Marshal.AllocHGlobal((int)cbNeeded + 128);
size = cbNeeded + 128;
EnumPrinters(Flags, null, 1, pPrInfo4, size, ref cbNeeded, ref cReturned);
if (cReturned != 0)
{
PRINTER_INFO_1[] printerInfo1 = new PRINTER_INFO_1[cReturned];
int offset = pPrInfo4.ToInt32();
Type type = typeof(PRINTER_INFO_1);
int increment = Marshal.SizeOf(type);
for (int i = 0; i < cReturned; i++)
{
printerInfo1[i] = (PRINTER_INFO_1)Marshal.PtrToStructure(new IntPtr(offset), type);
offset += increment;
}
Marshal.FreeHGlobal(pPrInfo4);
return printerInfo1;
}
}
return new PRINTER_INFO_1[] { };
}
public static PRINTER_INFO_1[] MyEnumPrinters(PrinterEnumFlags Flags)
{
uint cbNeeded = 0;
uint cReturned = 0;
IntPtr pPrInfo4 = IntPtr.Zero;
uint size = 0;
if (EnumPrinters(Flags, null, 1, IntPtr.Zero, size, ref cbNeeded, ref cReturned))
{
return(new PRINTER_INFO_1[] { });
}
if (cbNeeded != 0)
{
pPrInfo4 = Marshal.AllocHGlobal((int)cbNeeded + 128);
size = cbNeeded + 128;
EnumPrinters(Flags, null, 1, pPrInfo4, size, ref cbNeeded, ref cReturned);
if (cReturned != 0)
{
PRINTER_INFO_1[] printerInfo1 = new PRINTER_INFO_1[cReturned];
int offset = pPrInfo4.ToInt32();
Type type = typeof(PRINTER_INFO_1);
int increment = Marshal.SizeOf(type);
for (int i = 0; i < cReturned; i++)
{
printerInfo1[i] = (PRINTER_INFO_1)Marshal.PtrToStructure(new IntPtr(offset), type);
offset += increment;
}
Marshal.FreeHGlobal(pPrInfo4);
return(printerInfo1);
}
}
return(new PRINTER_INFO_1[] { });
}