C# Signature:

    [DllImport("winspool.drv", CharSet=CharSet.Auto, SetLastError=true)]
    private static extern bool EnumPrinters(PrinterEnumFlags Flags, string Name, uint Level,
    IntPtr pPrinterEnum, uint cbBuf,
    ref uint pcbNeeded, ref uint pcReturned);

VB Signature:

Declare Function EnumPrinters Lib "winspool.dll" (TODO) As TODO

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code:

        unsafe public static PRINTER_INFO_2 [] EnumPrinters(PrinterEnumFlags Flags)
        {
            PRINTER_INFO_2 [] Info2;

            uint cbNeeded = 0;
            uint cReturned = 0;
            bool ret = Winspool.EnumPrinters(Flags,
                null, 2, IntPtr.Zero, 0, ref cbNeeded, ref cReturned);

            byte [] bPrinterEnum = new byte [cbNeeded];
            fixed (byte *pAddr = bPrinterEnum)
            {

                ret = Winspool.EnumPrinters(Flags,
                    null, 2, (IntPtr)pAddr, (uint)bPrinterEnum.Length, ref cbNeeded, ref cReturned);

                if (ret)
                {
                    Info2 = new PRINTER_INFO_2[cReturned];

                    byte *pCurrent = pAddr;
                    for (int i = 0; i < cReturned; i++)
                    {
                        Info2[i].pServerName = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pPrinterName = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pShareName = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pPortName = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pDriverName = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pComment = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pLocation = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pDevMode = Marshal.ReadIntPtr((IntPtr)pCurrent);
                        pCurrent += 4;
                        Info2[i].pSepFile = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pPrintProcessor = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pDatatype = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pParameters = Marshal.PtrToStringAuto(Marshal.ReadIntPtr((IntPtr)pCurrent));
                        pCurrent += 4;
                        Info2[i].pSecurityDescriptor = Marshal.ReadIntPtr((IntPtr)pCurrent);
                        pCurrent += 4;
                        Info2[i].Attributes = (uint)Marshal.ReadInt32((IntPtr)pCurrent);
                        pCurrent += 4;
                        Info2[i].Priority = (uint)Marshal.ReadInt32((IntPtr)pCurrent);
                        pCurrent += 4;
                        Info2[i].DefaultPriority = (uint)Marshal.ReadInt32((IntPtr)pCurrent);
                        pCurrent += 4;
                        Info2[i].StartTime = (uint)Marshal.ReadInt32((IntPtr)pCurrent);
                        pCurrent += 4;
                        Info2[i].UntilTime = (uint)Marshal.ReadInt32((IntPtr)pCurrent);
                        pCurrent += 4;
                        Info2[i].Status = (uint)Marshal.ReadInt32((IntPtr)pCurrent);
                        pCurrent += 4;
                        Info2[i].cJobs = (uint)Marshal.ReadInt32((IntPtr)pCurrent);
                        pCurrent += 4;
                        Info2[i].AveragePPM = (uint)Marshal.ReadInt32((IntPtr)pCurrent);
                        pCurrent += 4;
                    }
                }
                else
                {
                    Info2 = new PRINTER_INFO_2[0];
                }

            }
            return Info2;
        }

Alternative Managed API:

PrinterSettings.InstalledPrinters, but this only gives the name of the printers.