Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Using Change Notification Objects to monitor changes to the printer or print server
Using the LoadImage function to have a bitmap file loaded and displayed on VFP main window
Winsock: retrieving directory listing from an FTP server using passive data connection (FTP, port 21)
Adding and deleting User Accounts
Enhanced GetFont dialog
How to detect if additional monitor is connected and active
Obtaining names of local and global groups for current user (WinNT/XP/2K)
Using the NetMessageBufferSend to send messages on the network
Building a tree of subdirectories for a given path using FindFile functions
Creating a window using CreateWindowEx function
Enumerating print jobs and retrieving information for default printer (JOB_INFO_1 structures)
FindText -- the hopeless and useless Common Dialog
How to change the name and the size of the font in the MessageBox dialog
Playing WAV sounds simultaneously
Winsock: how to retrieve the protocol information corresponding to a protocol number
Winsock: retrieving information from a host database for a given host name
A procedure for setting file times
Creating the Save dialog box to specify the drive, directory, and name of a file to save
CryptoAPI: Collection of Providers class
How to create MD-5 and SHA-1 hash values from a string
How to play MIDI notes
Obtaining addresses for the adapters on the local computer (Win XP/2003/Vista)
Printing text with the Escape function
Retrieving long values associated with the class of the VFP window
How to enumerate terminal servers within the specified Windows domain

User rating: 0/10 (0 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:
  • How to enumerate sessions and processes on a specified terminal server

  • DO declare
    
    LOCAL cDomainName, hBuffer, nSvrIndex, nSvrCount, nBufsize,;
        cBuffer, nAddress, cSvrName
    
    STORE 0 TO hBuffer, nSvrCount
    
    * The first parameter is the name of Windows domain to be queried.
    * If this parameter is NULL, the current domain is assumed.
    cDomainName=NULL
    *cDomainName="companydomain"
    
    nResult = WTSEnumerateServers(cDomainName, 0, 1, @hBuffer, @nSvrCount)
    
    IF nResult = 0
    * 1212=invalid domain name/format
        ? "WTSEnumerateServers failed with error:", GetLastError()
        RETURN
    ENDIF
    
    ? "Number of terminal servers within the domain:", nSvrCount
    
    * create VFP string variable and allocate amount of space
    * required to store the array of WTS_SERVER_INFO structures
    * created by WTSEnumerateServers function
    nBufsize = GlobalSize(hBuffer)
    cBuffer = REPLICATE(CHR(0), nBufsize)
    = MemToStr(@cBuffer, hBuffer, nBufsize)
    
    *    The array of WTS_SERVER_INFO structures starts with 
    * N DWORD (4-byte) values, where N is the number 
    * of terminal servers detected.
    *    Each value is the address in memory where a terminal server
    * name is stored.
    *    Each terminal server name ends with zero byte.
    
    * retrieve terminal server names from the array
    FOR nSvrIndex=0 TO nSvrCount-1
        nAddress = buf2dword(SUBSTR(cBuffer, nSvrIndex*4+1, 4))
        cSvrName = SUBSTR(cBuffer, nAddress - hBuffer+1)
        cSvrName = SUBSTR(m.cSvrName, 1, AT(CHR(0),cSvrName)-1)
        ? "["+cSvrName+"]"
    NEXT
    
    * release memory implicitly allocated by the WTSEnumerateServers
    = WTSFreeMemory(hBuffer)
    * end of main
    
    PROCEDURE declare
        DECLARE INTEGER GetLastError IN kernel32
        DECLARE WTSFreeMemory IN Wtsapi32 INTEGER pMemory
        DECLARE INTEGER GlobalSize IN kernel32 INTEGER hMem
    
        DECLARE INTEGER WTSEnumerateServers IN Wtsapi32;
            STRING pDomainName, LONG Reserved, LONG RqVersion,;
            LONG @ppServerInfo, LONG @SICount
    
        DECLARE RtlMoveMemory IN kernel32 As MemToStr; 
            STRING @dst, INTEGER src, 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: 0/10 (0 votes)
    Rate this code sample:
    • ~
    2157 bytes  
    Created: 2006-12-29 16:20:17  
    Modified: 2006-12-29 16:33:08  
    Visits in 7 days: 43  
    Listed functions:
    GetLastError
    GlobalSize
    WTSEnumerateServers
    WTSFreeMemory
    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 (5.6.33), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice.   Hosted by Korax Online Inc.
    Last Topics Visited (107.20.104.110)
    15 sec.Function: 'FindClose'
    Function group: 'File Management'
    1.78 min.Function: 'InternetDial'
    Function group: 'Internet Functions (WinInet)'
    3 day(s)Function: 'GdipGetDpiX'
    Function group: 'GDI+ Graphics'
    5 day(s)Example: 'GDI+: Using Scale and Shear transformations'
     Example: 'Accessing Adobe Reader 7.0 main menu from VFP application'
     Function: 'SHGetFolderLocation'
     Example: 'How to retrieve the number of print jobs queued for the printer'
     Function: 'CryptGetHashParam'
    Function group: 'Cryptography Reference'
    Google
    Advertise here!