Msvc 2005

[reetugupta]

i have created a dialog based application for calender.

coding is
void CcalenderDlg::DblClickCalendar1()
{
CString cSelectedDate;
char* cDay="";
char* cYear="";

itoa(m_calender.get_Day (),cDay,10);
cSelectedDate=cDay;

switch(m_calender.get_Month ())
{
case 1: cSelectedDate+="Jan";
break;
case 2: cSelectedDate+="Feb";
break;
case 3: cSelectedDate+="Mar";
break;
case 4: cSelectedDate+="Apr";
break;
case 5: cSelectedDate+="May";
break;
case 6: cSelectedDate+="Jun";
break;
case 7: cSelectedDate+="Jul";
break;
case 8: cSelectedDate+="Aug";
break;
case 9: cSelectedDate+="Sep";
break;
case 10: cSelectedDate+="Oct";
break;

}
itoa(m_calender.get_Year (),cYear,10);
cSelectedDate+=cYear;
LPSTR OriginChar= cSelectedDate.GetBuffer(0);

MessageBox("U dbl Clicked");
//////MessageBox("u dbl clicked",OriginChar,MB_OK);
//cSelectedDate.ReleaseBuffer();

}

initially it was giving errors with messagebox
now when i click on some date in calender it is giving exception

errors-

calender.exe': Loaded 'C:\Documents and Settings\Reetu\My Documents\Visual Studio 2005\Projects\calender\debug\calender.exe', Symbols loaded.
'calender.exe': Loaded 'C:\WINNT\system32\NTDLL.DLL', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\mfc80d.dll', Symbols loaded.
'calender.exe': Loaded 'C:\WINNT\system32\msvcr80d.dll', Symbols loaded.
'calender.exe': Loaded 'C:\WINNT\system32\msvcrt.dll', No symbols loaded.
'calender.exe': Loaded 'C:\WINNT\system32\KERNEL32.DLL', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\GDI32.DLL', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\USER32.DLL', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\shlwapi.dll', No symbols loaded.
'calender.exe': Loaded 'C:\WINNT\system32\ADVAPI32.DLL', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\rpcrt4.dll', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\comctl32.dll', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\OLEAUT32.DLL', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\OLE32.DLL', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\mfc80ENU.dll', Binary was not built with debug information.
'calender.exe': Loaded 'C:\WINNT\system32\EntAPI.dll', No symbols loaded.
'calender.exe': Loaded 'C:\WINNT\system32\psapi.dll', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\NETAPI32.DLL', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\secur32.dll', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\netrap.dll', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\samlib.dll', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\ws2_32.dll', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\ws2help.dll', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\WLDAP32.DLL', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\dnsapi.dll', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\wsock32.dll', Cannot find or open a required DBG file.
'calender.exe': Unloaded 'C:\WINNT\system32\EntAPI.dll'
'calender.exe': Unloaded 'C:\WINNT\system32\NETAPI32.DLL'
'calender.exe': Unloaded 'C:\WINNT\system32\dnsapi.dll'
'calender.exe': Unloaded 'C:\WINNT\system32\wsock32.dll'
'calender.exe': Unloaded 'C:\WINNT\system32\WLDAP32.DLL'
'calender.exe': Unloaded 'C:\WINNT\system32\ws2_32.dll'
'calender.exe': Unloaded 'C:\WINNT\system32\ws2help.dll'
'calender.exe': Unloaded 'C:\WINNT\system32\samlib.dll'
'calender.exe': Unloaded 'C:\WINNT\system32\netrap.dll'
'calender.exe': Unloaded 'C:\WINNT\system32\secur32.dll'
'calender.exe': Unloaded 'C:\WINNT\system32\psapi.dll'
'calender.exe': Loaded 'C:\WINNT\system32\clbcatq.dll', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\msi.dll', No symbols loaded.
'calender.exe': Loaded 'C:\Program Files\Microsoft Office\OFFICE11\MSCAL.OCX', No symbols loaded.
'calender.exe': Loaded 'C:\WINNT\system32\COMDLG32.DLL', Cannot find or open a required DBG file.
'calender.exe': Loaded 'C:\WINNT\system32\SHELL32.DLL', Cannot find or open a required DBG file.
First-chance exception at 0x1025714a (msvcr80d.dll) in calender.exe: 0xC0000005: Access violation writing location 0x00425d78.
Unhandled exception at 0x1025714a (msvcr80d.dll) in calender.exe: 0xC0000005: Access violation writing location 0x00425d78.
The program '[1628] calender.exe: Native' has exited with code 0 (0x0).

[weaknessforcats]

You access violation is here:

char* cDay="";
char* cYear="";

itoa(m_calender.get_Day (),cDay,10);

cDay is not a buffer. It is a pointer to a literal. That makes it const. When
itoa() tries to write to cDay is when you get your access violation.

cDay needs to be a char array:

char cDay[10] = "";           //I'm just guessing the 10