Thread: Help on String Conversions

  1. #1
    Registered User
    Join Date
    Oct 2003
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    2

    Help on String Conversions

    Hi,

    i am using eVC++( client side) to get some input from the dialog and send it to a server running as a console application in VC++. I have 2 edit boxes with one of the m having a mapping to a CString object and the other mapped to an integer value.
    I need to pack these 2 values and send it as a CString object to my Send function.

    I need to convert my integer valriable m_value to CString object so that i can concatenate the 2 CStrings.

    What i tried to was :
    CString m_strMessage,m_str;
    CString str;
    char* value="";
    value=(char *)&m_value;
    mbstowcs(str,value,sizeof(value));

    m_strMessage = m_str + str;
    // Send message to server
    UINT uiResult = Send(m_strMessage);

    The program gave the following error:
    error C2664: 'mbstowcs' : cannot convert parameter 1 from 'class CString' to 'unsigned short *'

    Can someone please help me on how to convert an integer value to a CString object.

    Thanks,
    Prasad

  2. #2
    Registered User
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    May 2003
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    161
    I'm not a fan of MFC, so I don't know much about CString. But, assuming that CString has a constructor accepting a const char*, you can try this:

    Code:
    #include <sstream>
    
    // ....
    
    CString number_to_string(int number)
    {
      std::ostringstream oss; 
      oss << number;
    
      return CString(oss.str().c_str());
    }

  3. #3
    Master of the Universe! velius's Avatar
    Join Date
    Sep 2003
    Posts
    219
    You need to use GetBuffer on the str variable to recieve a pointer to the char* contained within. Then use ReleaseBuffer to release the previously allocated buffer from GetBuffer. That may solve your problem.
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  4. #4
    Registered User
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    Oct 2003
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    Hi,

    i found the way to do it. i used the Format method of the CString Class.

    for example to convert to integers i used:

    CString str;
    int i=15;

    str.Format(_T("%d"), i);

    It worked for me.

    Thanx for the replies. i really appreciate your help.

    -Prasad

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