C / C++ / MFC

break; wrote:

CString csStringContent = "This is an String"; // modify to "This is String" or replace a part of themLPCTSTR lpsz = csStringContent;// modify lpsz?


with best regards

csStringContent = "This is String"; // modify to "This is String" or replace a part of them
 
LPTSTR lpsz = csStringContent.GetBuffer();// modify lpsz
lpsz[0] = _T( 't' ); // This change will be reflected in the string. "<code>t</code>his is String"
 
csStringContent.ReleaseBuffer(); // You should call this after GetBuffer

csStringContent = "This is String"; // modify to "This is String" or replace a part of them
 
LPCTSTR lpszC = csStringContent;// modify lpszC
LPTSTR lpsz[0] = const_cast< LPTSTR >( lpsz ); // Remove const'ness from string, not a good idea and should be avoided.
lpsz[0] = _T( 't' ); // This change will be reflected in the string. "<code>t</code>his is String"

Nibu babu thomas wrote:

CString csStringContent = "This is an String"; // modify to "This is String" or replace a part of themLPCTSTR lpsz = csStringContent;// modify lpsz?

TCHAR str[100] = "This is a string";<br />
_tcscpy(str[2], "aaa";<br />
CString cstr = str;

Stephen Hewitt wrote:

Your second method is just plain evil - although you mentioned it sould be avoided I'd go as for as to say you shouldn't have even mentioned it as an option. Even if it works on one MFC verion it may stop working in a later version.

<code>
LPCTSTR lpsz = csContent.GetBuffer();
LPSTR lpstr = (LPSTR) lpsz;
while(*lpstr)
{
// now change..
  if(something)
  {
    _strnset(lpstr, ' ', 1); // replace current character wit an empty char
  }
}
/*
on the finish in the lpsz are all characters replaced what i dont need!
but i dont know where is the risk on my solution???
*/
</code>

LPTSTR lpsz = csContent.GetBuffer(100);
// Do stuff...
csContent.ReleaseBuffer();

<code>
LPCTSTR lpsz = csContent.GetBuffer();
LPSTR lpstr = (LPSTR) lpsz;
while(*lpstr)
{
// now change..
  if(something)
  {
    _strnset(lpstr, ' ', 1); // replace current character wit an empty char
  }
}
/*
on the finish in the lpsz are all characters replaced what i dont need!
but i dont know where is the risk on my solution???
*/
</code>

// csContent is a CString with data in it
csContent.Replace(SomeValueIWantChanged, _T(' '));

Aniket Salunkhe wrote:

It shows Linking error for the member functions of class. But when I remove template from Class the program runs well; even when I write all code (Class with template) in single "Program01.cpp" File then also it runs well.
Then what might be the problem in the above code?

// In AClass.h
template < class T >
class AClass
{
    int ATemplateFunction( T aObj );
};
 
// Don't define this function in AClass.cpp but in AClass.h
template< class T >
int AClass< T >::ATemplateFunction( T aObj )
{
   // Have fun
   return 1;
}

Nibu babu thomas wrote:

Template classes should be defined and declared in .h files

Aniket Salunkhe wrote:

But I am creating Library ('Wind32 Static Library') using that code, so i can't write implementation of class in .h file.
So what should i do?

Aniket Salunkhe wrote:

Where should I search for that?