Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Comparing file times
Converting Unicode data from the Clipboard to a character string using a given code page
Creating a mailslot
Disabling mouse and keyboard input for the main VFP window (with the app still running)
Enumerating print jobs and retrieving information for default printer (JOB_INFO_1 structures)
Enumerating servers of the specified type (e.g. SQL Server) in the primary domain
Getting a bit more than the _CLIPTEXT offers
How to initiate System shutdown
Obtaining MAC address through Address Resolution Protocol (ARP) request
Quering Audio Mixer Device
Retrieving the interface–to–IP address mapping table
Retrieving Window Class information for the VFP window
Scanning a hierarchy of child windows down from the Windows Desktop
Using FlashWindowEx to flash the taskbar button of the VFP application
Winsock: retrieving the host information corresponding to a network address
How to read email messages using Simple MAPI
How to retrieve the number of print jobs queued for the printer
Obtaining addresses for the adapters on the local computer (Win XP/2003/Vista)
Reading security permissions for NTFS files and folders
Running a regular FoxPro form while main VFP window is minimized
Setting the mouse capture to the specified window
Transparent Menu Class (requires VFP9)
Using FtpCommand
Using the heap of the calling process to allocate memory blocks
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: 41  
Listed functions:
ClosePrinter
GetActiveWindow
GetProfileString
OpenPrinter
PrinterProperties
Printer friendly API declarations
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