Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
GDI+: retrieving list of available image encoders and image decoders
How to block the PrintScreen key
How to view system icons for the classes installed on the local machine
How to write and read Window Properties for the specified window
Obtaining the bounding rectangle for the specified device context
Quering Audio Mixer Device
Reading data from INI files
Reading security permissions for NTFS files and folders
Retrieving information specific to the current Time Zone
Starting a dialog box for connecting to network resources (mapping network drive)
The original LoadPicture() function in VFP returns valid handles to bitmaps, icons, cursors, and metafiles
Using IsChild() for testing ThisForm.ShowWindow property
Winsock: creating a socket that is bound to a specific service provider
Accessing examples contained in this reference from a VFP application
Adding supplementary data to AVI files
Finding out if the current user is the Guest account
Retrieving the interface–to–IP address mapping table
Running a regular FoxPro form while main VFP window is minimized
Scanning the hierarchy of child windows down from the main VFP window
Setting the volume label
Testing if a connection to an Url can be established
Using GetNearestColor
Using the MessageBox Win32 function
Using the SetErrorMode for determining if a floppy drive is ready
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: 53  
Listed functions:
ClosePrinter
GetActiveWindow
GetProfileString
OpenPrinter
PrinterProperties
Printer friendly API declarations
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