I don't remember where I got this originally:

*|typedef struct _PRINTER_INFO_2 {
*| LPTSTR pServerName; 0:4
*| LPTSTR pPrinterName; 4:4
*| LPTSTR pShareName; 8:4
*| LPTSTR pPortName; 12:4
*| LPTSTR pDriverName; 16:4
*| LPTSTR pComment; 20:4
*| LPTSTR pLocation; 24:4
*| LPDEVMODE pDevMode; 28:4
*| LPTSTR pSepFile; 32:4
*| LPTSTR pPrintProcessor; 36:4
*| LPTSTR pDatatype; 40:4
*| LPTSTR pParameters; 44:4
*| PSECURITY_DESCRIPTOR pSecDesc; 48:4
*| DWORD Attributes; 52:4
*| DWORD Priority; 56:4
*| DWORD DefaultPriority; 60:4
*| DWORD StartTime; 64:4
*| DWORD UntilTime; 68:4
*| DWORD Status; 72:4
*| DWORD cJobs; 76:4
*| DWORD AveragePPM; 80:4
*|} PRINTER_INFO_2, *PPRINTER_INFO_2; 84 bytes

* Here's the Win32 function we want to call:
DECLARE INTEGER AddPrinter IN winspool.drv;
        STRING pName, INTEGER Level, STRING @pPrinter

* Other needed Win32's
    DECLARE INTEGER GetLastError IN kernel32
    DECLARE INTEGER ClosePrinter IN winspool.drv INTEGER hPrinter

LOCAL lcInfoBuffer, hPrinter, lcSrvName, lcPrnName, lcDrvName
lcPrnName = "My Printer Name"
lcDrvName = "Generic / Text Only"

* empty server name means local computer
* or put existing server name like "\\MYSERV"
* Win9/Me: should be empty, can only install local printers
lcSrvName = ""

* MSDN: You must specify non-NULL values for the pPrinterName,
* pPortName, pDriverName, and pPrintProcessor members of
* this structure before calling AddPrinter.

LOCAL loSrvName, loPrnName, loPortName, loDrvName, loPrnProc
loSrvName = CreateObject("PChar", lcSrvName)
loPrnName = CreateObject("PChar", lcPrnName)
loPortName = CreateObject("PChar", "LPT1:")
loDrvName = CreateObject("PChar", lcDrvName)
loPrnProc = CreateObject("PChar", "WinPrint")

* filling PRINTER_INFO_2 structure
lcInfoBuffer = num2dword(loSrvName.GetAddr()) +;
    num2dword(loPrnName.GetAddr()) + num2dword(0) +;
    num2dword(loPortName.GetAddr()) +;
    num2dword(loDrvName.GetAddr()) +;
    num2dword(0) + num2dword(0) +;
    num2dword(0) + num2dword(0) +;
    num2dword(loPrnProc.GetAddr()) +;
    num2dword(0) + num2dword(0) +;
    num2dword(0) + num2dword(0) +;
    num2dword(0) + num2dword(0) +;
    num2dword(0) + num2dword(0) +;
    num2dword(0) + num2dword(0) +;
    num2dword(0)

hPrinter = AddPrinter(lcSrvName, 2, @lcInfoBuffer)
IF hPrinter = 0
* 1795 - ERROR_PRINTER_DRIVER_ALREADY_INSTALLED
* 1796 - ERROR_UNKNOWN_PORT
* 1797 - ERROR_UNKNOWN_PRINTER_DRIVER
* 1798 - ERROR_UNKNOWN_PRINTPROCESSOR
* 1801 - ERROR_INVALID_PRINTER_NAME
* 1802 - ERROR_PRINTER_ALREADY_EXISTS
    ? "Error code:", GetLastError()
ELSE
    ? "Handle to a new printer object:", hPrinter
    = ClosePrinter(hPrinter)
ENDIF

***** end of main code ********

* Function & class follow that ease dealing with Win32 data types:

FUNCTION num2dword (lnValue)
#DEFINE m0 256
#DEFINE m1 65536
#DEFINE m2 16777216
    LOCAL b0, b1, b2, b3
    b3 = Int(lnValue/m2)
    b2 = Int((lnValue - b3*m2)/m1)
    b1 = Int((lnValue - b3*m2 - b2*m1)/m0)
    b0 = Mod(lnValue, m0)
RETURN Chr(b0)+Chr(b1)+Chr(b2)+Chr(b3)

* * * * * * * * * * * * * * * * * * * * * * * *
DEFINE CLASS PChar As Custom
    PROTECTED hMem

PROCEDURE Init (lcString)
    THIS.hMem = 0
    THIS.setValue (lcString)

PROCEDURE Destroy
    THIS.ReleaseString

FUNCTION getAddr && returns a pointer to the string
RETURN THIS.hMem

FUNCTION getValue && returns string value
    LOCAL lnSize, lcBuffer
    lnSize = THIS.getAllocSize()
    lcBuffer = SPACE(lnSize)

    IF THIS.hMem <> 0
        DECLARE RtlMoveMemory IN kernel32 As Heap2Str;
            STRING @, INTEGER, INTEGER
        = Heap2Str (@lcBuffer, THIS.hMem, lnSize)
    ENDIF
RETURN lcBuffer

FUNCTION getAllocSize && returns allocated memory size (string length)
    DECLARE INTEGER GlobalSize IN kernel32 INTEGER hMem
RETURN Iif(THIS.hMem=0, 0, GlobalSize(THIS.hMem))

PROCEDURE setValue (lcString) && assigns new string value
#DEFINE GMEM_FIXED 0
    THIS.ReleaseString

    DECLARE INTEGER GlobalAlloc IN kernel32 INTEGER, INTEGER
    DECLARE RtlMoveMemory IN kernel32 As Str2Heap;
        INTEGER, STRING @, INTEGER

    LOCAL lnSize
    lcString = lcString + Chr(0)
    lnSize = Len(lcString)
    THIS.hMem = GlobalAlloc (GMEM_FIXED, lnSize)
    IF THIS.hMem <> 0
        = Str2Heap (THIS.hMem, @lcString, lnSize)
    ENDIF
         
PROCEDURE ReleaseString && releases allocated memory
    IF THIS.hMem <> 0
        DECLARE INTEGER GlobalFree IN kernel32 INTEGER
        = GlobalFree (THIS.hMem)
        THIS.hMem = 0
    ENDIF
ENDDEFINE

>Hi
>
>How to install a "Generic Only Text" printer driver programatically?
>I looked for this issue in UT threads, articles from George Tasker and Ed Raugh in Vfug and some other places, and I couldn´t find it. Someone could please help me?
>
>Best Regards