@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: The EnumPrinterDrivers function enumerates the printer drivers installed on a specified printer server !!!!C# Signature: [DllImport("winspool.drv", CharSet = CharSet.Auto, SetLastError = true)] static extern bool EnumPrinterDrivers(String pName, String pEnvironment, uint level, IntPtr pDriverInfo, uint cdBuf, ref uint pcbNeeded, ref uint pcRetruned); !!!!VB Signature: Declare Function EnumPrinterDrivers Lib "winspool.dll" (TODO) As TODO !!!!User-Defined Types: [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct DRIVER_INFO_2 { public uint cVersion; [MarshalAs(UnmanagedType.LPTStr)] public string pName; [MarshalAs(UnmanagedType.LPTStr)] public string pEnvironment; [MarshalAs(UnmanagedType.LPTStr)] public string pDriverPath; [MarshalAs(UnmanagedType.LPTStr)] public string pDataFile; [MarshalAs(UnmanagedType.LPTStr)] public string pConfigFile; } !!!!Alternative Managed API: Do you know one? Please contribute it! !!!!Notes: None. !!!!Tips & Tricks: pName is the machine name. If null, it will target the local computer. If a remote machine is specified, it must be preceded by @"\\". !!!!Sample Code: private DRIVER_INFO_2[] GetInstalledPrinterDrivers() { /* 'To determine the required buffer size, 'call EnumPrinterDrivers with cbBuffer set 'to zero. The call will fails specifying 'ERROR_INSUFFICIENT_BUFFER and filling in 'cbRequired with the required size, in bytes, 'of the buffer required to hold the array 'of structures and data. */ uint cbNeeded = 0; uint cReturned = 0; if (EnumPrinterDrivers(null, null, 2, IntPtr.Zero, 0, ref cbNeeded, ref cReturned)) { //succeeds, but shouldn't, because buffer is zero (too small)! throw new Exception("EnumPrinters should fail!"); } int lastWin32Error = Marshal.GetLastWin32Error(); //ERROR_INSUFFICIENT_BUFFER = 122 expected, if not -> Exception if (lastWin32Error != 122) { throw new Win32Exception(lastWin32Error); } IntPtr pAddr = Marshal.AllocHGlobal((int)cbNeeded); if (EnumPrinterDrivers(null, null, 2, pAddr, cbNeeded, ref cbNeeded, ref cReturned)) { DRIVER_INFO_2[] printerInfo2 = new DRIVER_INFO_2[cReturned]; int offset = pAddr.ToInt32(); Type type = typeof(DRIVER_INFO_2); int increment = Marshal.SizeOf(type); for (int i = 0; i < cReturned; i++) { printerInfo2[i] = (DRIVER_INFO_2)Marshal.PtrToStructure(new IntPtr(offset), type); offset += increment; } Marshal.FreeHGlobal(pAddr); return printerInfo2; } throw new Win32Exception(Marshal.GetLastWin32Error()); } Documentation: EnumPrinterDrivers@msdn on MSDN
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