Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Printing Image File, programmatically set print page orientation to landscape
Enumerating devices installed on the local machine
How to change display settings: screen resolution, screen refresh rate
How to draw custom Window Caption on FoxPro form
Custom GDI+ class
Obtaining names and positions for shortcuts located on the Windows Desktop
Using Video Capture: displaying on FoxPro form frames and previewing video obtained from a digital camera
GDI+: Implementing image scrolling with inertia
Browsing Windows Known Folders (Special Folders)
GDI+: reading and writing metadata in JPEG and TIFF files
Customizing the frame of top-level form: removing the standard frame (VFP9, Vista)
Capturing keyboard activity of another application with the Raw Input API (VFP9)
Custom FTP Class for Visual FoxPro application
Displaying icons in the system tray (VFP9)
Displaying dimmed window behind VFP top-level form
Storing screen shot of a form to bitmap file
Winsock: sending email messages (SMTP, port 25)
How to print FoxPro form
How to put a horizontal text scrolling on the form (a news line, marquee)
Playing WAV files on InteractiveChange
Accessing Adobe Reader 7.0 main menu from VFP application
Extended MessageBox Class
How to make a VFP form fading out when released (GDI version)
Windows Shell Icons displayed and exported to ICO files (Vista)
Obtaining names of local and global groups for current user (WinNT/XP/2K)

User rating: 10/10 (1 votes)
Rate this code sample:
  • ~
More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample
Before you begin:
See also:
  • Enumerating global and local group accounts on a server (WinNT/XP/2K)
  • Enumerating sessions established on a server

  • DO decl
    
    cServer = ""  && empty value means local computer
    *cServer = "\\MYSERVER"
    cUser = GetUsrName()  && current user
    
    = ListGroups(cServer, cUser)  && local groups
    = ListGroups(cServer, cUser, .T.)  && global groups
    * end of main
    
    PROCEDURE ListGroups(cServer, cUser, lGlobal)
    #DEFINE MAX_PREFERRED_LENGTH -1
    
        LOCAL hBuffer, nBufsize, nReadCount, nTotalCount, nResult,;
            cBuffer, nIndex, nPtr, nOffs, nLen, cGroup
    
        STORE 0 TO nReadCount, nTotalCount, hBuffer
    
        cServer = StrConv(cServer+Chr(0), 5)
        cUser = StrConv(cUser+Chr(0), 5)
    
        IF lGlobal
            nResult = NetUserGetGroups(cServer, cUser, 0,;
                @hBuffer, MAX_PREFERRED_LENGTH, @nReadCount, @nTotalCount)
        ELSE
            nResult = NetUserGetLocalGroups(cServer, cUser, 0,0,;
                @hBuffer, MAX_PREFERRED_LENGTH, @nReadCount, @nTotalCount)
        ENDIF
    
        IF nResult <> 0 Or hBuffer=0
            = NetApiBufferFree(hBuffer)
            ? "Error code:", nResult
            RETURN
        ENDIF
    
        * size of the buffer allocated by the system
        * GlobalSize on Windows XP returns same result
        nBufsize = 0
        = NetApiBufferSize(hBuffer, @nBufsize)
    
        * copying data from memory buffer to FoxPro string
        cBuffer = Repli(Chr(0), nBufsize)
        CopyMemory(@cBuffer, hBuffer, nBufsize)
    
        * scanning group names
        FOR nIndex=1 TO nTotalCount
            * retrieving 4-byte (DWORD) address of Unicode string
            * that specifies the group name
            nPtr = buf2dword(SUBSTR(cBuffer, (nIndex-1)*4+1,4))
    
            * matching memory addresses to cBuffer string
            nOffs = nPtr - hBuffer + 1
            cGroup = SUBSTR(cBuffer, nOffs)+Chr(0)+Chr(0)
            nLen = AT(Chr(0)+Chr(0), cGroup)
            cGroup = SUBSTR(cGroup, 1, nLen)
    
            ? nIndex, StrConv(cGroup, 6)
        ENDFOR
        = NetApiBufferFree(hBuffer)
    
    FUNCTION GetUsrName
    * actually SYS(0) is Ok too :)
        LOCAL cBuffer, nBufsize
        nBufsize = 32
        cBuffer = Repli(Chr(0), nBufsize)
        = GetUserName(@cBuffer, @nBufsize)
    RETURN STRTRAN(cBuffer, Chr(0), "")
    
    PROCEDURE decl
        DECLARE INTEGER NetUserGetGroups IN netapi32;
            STRING servername, STRING username, INTEGER lvl,;
            INTEGER @bufptr, INTEGER prefmaxlen,;
            INTEGER @entriesread, INTEGER @totalentries
    
        DECLARE INTEGER NetUserGetLocalGroups IN netapi32;
            STRING servername, STRING username, INTEGER lvl,;
            INTEGER flgs, INTEGER @bufptr, INTEGER prefmaxlen,;
            INTEGER @entriesread, INTEGER @totalentries
    
        DECLARE INTEGER GetUserName IN advapi32;
            STRING  @lpBuffer, INTEGER @nSize
    
        DECLARE RtlMoveMemory IN kernel32 As CopyMemory;
            STRING @dst, INTEGER src, INTEGER bufsize
    
        DECLARE INTEGER NetApiBufferFree IN netapi32 INTEGER buffer
    
        DECLARE INTEGER NetApiBufferSize IN netapi32;
            INTEGER Buffer, INTEGER @ByteCount
    
    FUNCTION buf2dword(lcBuffer)
    RETURN Asc(SUBSTR(lcBuffer, 1,1)) + ;
        BitLShift(Asc(SUBSTR(lcBuffer, 2,1)),  8) +;
        BitLShift(Asc(SUBSTR(lcBuffer, 3,1)), 16) +;
        BitLShift(Asc(SUBSTR(lcBuffer, 4,1)), 24)
    
    
    

    User rating: 10/10 (1 votes)
    Rate this code sample:
    • ~
    2866 bytes  
    Created: 2003-12-05 20:41:44  
    Modified: 2011-12-10 09:20:22  
    Visits in 7 days: 56  
    Listed functions:
    GetUserName
    GlobalSize
    NetApiBufferFree
    NetApiBufferSize
    NetUserGetGroups
    NetUserGetLocalGroups
    Printer friendly API declarations
    Word Index links for this example:
    Translate this page:
      Spanish    Portuguese    German    French    Italian  
    FreeTranslation.com offers instant, free translations of text or web pages.
    User Contributed Notes:
    There are no notes on this subject.


    Copyright 2001-2016 News2News, Inc. Before reproducing or distributing any data from this site please ask for an approval from its owner. Unless otherwise specified, this page is for your personal and non-commercial use. The information on this page is presented AS IS, meaning that you may use it at your own risk. Microsoft Visual FoxPro and Windows are trade marks of Microsoft Corp. All other trademarks are the property of their respective owners. 

    Privacy policy
    Credits: PHP (4.4.9), an HTML-embedded scripting language, MySQL (5.5.46), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice.   Hosted by Korax Online Inc.
    Google
    Advertise here!