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Posted 13 Jan 2000

Opening a Dial-Up connection

, 13 Jan 2000
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How to open a new dialup connection using RasDial
  • Download demo project - 10 Kb
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    There is a code for Dial-Up connection. Alexander Fedorov discusses in his article Calling RasHangUp without errors how to disconnect a dial-up connection. This is other part of same problem (accessing the internet via phone line). This task can be done by using the CInternetSession::GetFtpConnection() function for example, but only if all parameters in the dial-up dialog are present (but then you can't set the username, password and phone number programatically).

    To use this function you must include the "ras.h" and "raserror.h" header files and link with rasapi32.lib.

    bool DialUp() 
        // Fill RASDIALPARAMS structure
        RASDIALPARAMS rdParams;
        rdParams.dwSize = sizeof(RASDIALPARAMS);
        rdParams.szEntryName[0] = '\0';
        lstrcpy(rdParams.szPhoneNumber, szPhoneNumberToDial);
        rdParams.szCallbackNumber[0] = '\0';
        lstrcpy( rdParams.szUserName, szUserName );
        lstrcpy( rdParams.szPassword, szPassword );    
        rdParams.szDomain[0] = '\0';
        HRASCONN hRasConn = NULL;
        DWORD dwRet = RasDial( NULL, NULL, &rdParams, 0L, NULL, &hRasConn );
        // Everything OK?
        if (dwRet == 0)  
            return true;    
        // Error occurred - get error description and alert user
        char  szBuf[256];
        if (RasGetErrorString( (UINT)dwRet, (LPSTR)szBuf, 256 ) != 0 )
            wsprintf( (LPSTR)szBuf, "Undefined RAS Dial Error (%ld).", dwRet );
        RasHangUp( hRasConn );
        AfxMessageBox( NULL, (LPSTR)szBuf, "Error", MB_OK | MB_ICONSTOP );
        return false;

    Note that here I'm using the synchronous version (the fifth parameter of RasDial() is NULL). The updated version can use a pointer to the RasDialFunc() function instead, and then RasDial() returns immediately and calls RasDialFunc() when WM_RASDIALEVENT occurs.


    This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

    A list of licenses authors might use can be found here


    About the Author

    Mileta Radenovic
    Software Developer (Senior)
    Canada Canada
    No Biography provided

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    Comments and Discussions

    Suggestionyes this can also be tricky in SEO Pin
    Ranvir Sharma26-Dec-13 0:41
    memberRanvir Sharma26-Dec-13 0:41 
    GeneralProblem with proxy Pin
    mahila7-Jan-06 0:18
    membermahila7-Jan-06 0:18 
    GeneralNice Pin
    euacela12-Sep-04 12:51
    membereuacela12-Sep-04 12:51 
    GeneralWin 98 &amp; RasDial Pin
    shoshana13-Jul-04 1:55
    membershoshana13-Jul-04 1:55 
    GeneralRe: Win 98 & RasDial Pin
    leechangjun29-Mar-11 22:51
    memberleechangjun29-Mar-11 22:51 
    GeneralRegarding creating Dialup via Visual Basic Pin
    autometa3-Feb-04 0:31
    memberautometa3-Feb-04 0:31 
    GeneralNewer ras.h Pin
    nikouhl6-Aug-03 6:26
    membernikouhl6-Aug-03 6:26 
    GeneralGetting the IP address from the Remote PC Pin
    Leon v Wyk10-Apr-03 2:40
    memberLeon v Wyk10-Apr-03 2:40 
    GeneralPlease help Pin
    bowetech14-Feb-03 17:25
    memberbowetech14-Feb-03 17:25 
    GeneralRe: Please help Pin
    Leon v Wyk10-Apr-03 2:13
    memberLeon v Wyk10-Apr-03 2:13 
    GeneralThis code overwrites original PhoneBook Pin
    Tili18-Jul-02 16:57
    memberTili18-Jul-02 16:57 
    QuestionWhat if i dial ¶ÌÈ©¥ Pin
    Anonymous21-Feb-02 19:56
    memberAnonymous21-Feb-02 19:56 
    GeneralWindows 98 as dial-up server Pin
    Felvi20-Feb-02 17:01
    memberFelvi20-Feb-02 17:01 
    GeneralRe: Windows 98 as dial-up server Pin
    Leon v Wyk10-Apr-03 2:17
    memberLeon v Wyk10-Apr-03 2:17 
    GeneralRE: DialUp Pin
    Martijn Hoogendoorn6-Mar-00 11:42
    sussMartijn Hoogendoorn6-Mar-00 11:42 
    GeneralMake link dynamic Pin
    Brad Bruce15-Jan-00 6:25
    sussBrad Bruce15-Jan-00 6:25 

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