Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Encapsulating access to the Windows Services in a class
Enumerating ports that are available for printing on a specified server
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Loading a string resource from an executable file
Displaying printer-properties Property Sheet for the specified printer

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More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample
#DEFINE PRINTER_ACCESS_ADMINISTER  4
#DEFINE PRINTER_ACCESS_USE         8
DO decl

LOCAL cPrinter, hPrinter, lcPrnDefaults

cPrinter = GetPrnName()  && default printer

* PRINTER_DEFAULTS structure
lcPrnDefaults = Repli(Chr(0),8) +;
    Chr(PRINTER_ACCESS_ADMINISTER) + Repli(Chr(0),3)

hPrinter = 0
IF OpenPrinter(cPrinter, @hPrinter, lcPrnDefaults) = 0
    ? "Error opening printer [" + cPrinter + "]"
    RETURN
ENDIF

= PrinterProperties(GetActiveWindow(), hPrinter)
= ClosePrinter(hPrinter)
* end of main

FUNCTION GetPrnName
* returns default printer name from Windows Registry
    LOCAL lcBuffer, lcPrinter, lcDriver, lcPort
    lcBuffer = Repli(Chr(0), 120)
    = GetProfileString("Windows", "Device", ",,,",;
        @lcBuffer, Len(lcBuffer))
    lcBuffer = STRTRAN(lcBuffer, Chr(0), "")
RETURN SUBSTR(lcBuffer, 1, AT(",", lcBuffer, 1)-1)

PROCEDURE decl
    DECLARE INTEGER OpenPrinter IN winspool.drv;
        STRING pPrinterName, INTEGER @phPrinter, STRING pDefault

    DECLARE INTEGER GetProfileString IN kernel32;
        STRING lpApp, STRING lpKey, STRING lpDefault,;
        STRING @lpReturnedString, INTEGER nSize

    DECLARE INTEGER ClosePrinter IN winspool.drv INTEGER hPrinter 
    DECLARE INTEGER GetActiveWindow IN user32

    DECLARE INTEGER PrinterProperties IN winspool.drv;
        INTEGER hWnd, INTEGER hPrinter



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1321 bytes  
Created: 2003-01-20 09:58:07  
Modified: 2003-11-05 15:47:01  
Visits in 7 days: 20  
Listed functions:
ClosePrinter
GetActiveWindow
GetProfileString
OpenPrinter
PrinterProperties
Printer friendly API declarations
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