How to convert cstrint to char*

Discussion in 'MFC' started by ankurk, Oct 9, 2007.

  1. ankurk

    ankurk New Member

    Joined:
    Aug 8, 2007
    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    0
    hi i want a to convert cstring variable contents into char *;


    how can i convert it, actually problem is that cstring variable is of textbox n i want to pass the contents to a function which takes parameters as char *.



    Thanks!!! :D
     
  2. shabbir

    shabbir Administrator Staff Member

    Joined:
    Jul 12, 2004
    Messages:
    15,375
    Likes Received:
    388
    Trophy Points:
    83
    Use the GetBuffer function but remember to use the ReleaseBuffer after you are done.
     
  3. ankurk

    ankurk New Member

    Joined:
    Aug 8, 2007
    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    0
    could you give me a snippet plz. i am working on windows ce actually
     
  4. ankurk

    ankurk New Member

    Joined:
    Aug 8, 2007
    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    0
    getbuffer does'nt work , i get only the first character of string not the whole string, could there be any problem due to character set in windows ce?
     
  5. shabbir

    shabbir Administrator Staff Member

    Joined:
    Jul 12, 2004
    Messages:
    15,375
    Likes Received:
    388
    Trophy Points:
    83
    If you are using some compiler and an IDE you should be fine using the . to get the function.
     
  6. ankurk

    ankurk New Member

    Joined:
    Aug 8, 2007
    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    0
    i am using microsoft embedded c++ , compiler
    n no probs with .(dot).
     
  7. shabbir

    shabbir Administrator Staff Member

    Joined:
    Jul 12, 2004
    Messages:
    15,375
    Likes Received:
    388
    Trophy Points:
    83
    So you should be able to use the functions I mention above. Why don't you give a try.
     
  8. ankurk

    ankurk New Member

    Joined:
    Aug 8, 2007
    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    0
    i tried but getbuffer() only gives me the first character of the string not the whole string
     
  9. shabbir

    shabbir Administrator Staff Member

    Joined:
    Jul 12, 2004
    Messages:
    15,375
    Likes Received:
    388
    Trophy Points:
    83
  10. ankurk

    ankurk New Member

    Joined:
    Aug 8, 2007
    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    0
    look i have this problem
    Code:
    int let;
     CString browse_file_name = " \\system\\texFile.TXT";
    
    const char * argument = browse_file_name.Getbuffer(browse_file_name.GetLength());
    
    FILE * file = fopen(argument,"r");
    	if(!file)
    	{
    		let = GetLastError();
    		MessageBox(_T("ERROR! file not found ..."));
    		exit(0);
    	}
    	else
    		MessageBox(_T("OK File found ..."));
    
    
    now the thing is that the variable argument does not get the whole path , just "\" only....
    please help

    i am using microsoft embedded vc++ compiler.
     
    Last edited by a moderator: Oct 11, 2007
  11. shabbir

    shabbir Administrator Staff Member

    Joined:
    Jul 12, 2004
    Messages:
    15,375
    Likes Received:
    388
    Trophy Points:
    83
    My VC Compiler gives the correct output provided you use GetBuffer and not Getbuffer.
     
  12. ankurk

    ankurk New Member

    Joined:
    Aug 8, 2007
    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    0
    yes i am using the GetBuffer(); earlier that was a typing mistake,,


    still not getting the right output..., r u getting the whole string in the char * argument???
     
  13. shabbir

    shabbir Administrator Staff Member

    Joined:
    Jul 12, 2004
    Messages:
    15,375
    Likes Received:
    388
    Trophy Points:
    83
  14. ankurk

    ankurk New Member

    Joined:
    Aug 8, 2007
    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    0
    well god knows what's wrong then.......
    but i'll tell you it's not that simple i have found several queries similar to mine , but neither of the solutions provided there are useful.


    anyways thanks for your time
     
  15. ankurk

    ankurk New Member

    Joined:
    Aug 8, 2007
    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    0
    here is the correct solution use this version of fopen

    Code:
    int let;
    	UpdateData();
    
    	const wchar_t  * g_application_path  = (LPCTSTR) m_browse_file;
    
    	FILE * file = _tfopen(g_application_path ,_T("rb"));
    
    	if(!file)
    	{
    		let = GetLastError();
    		MessageBox(_T("ERROR! file not found ..."));
    		exit(0);
    	}
    	else
    		MessageBox(_T("OK File found ..."));
    
    
    just wanted to help if any one had similar problem
     
    Last edited by a moderator: Oct 13, 2007

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice