How to convert a string to char

[vc _fragrance]

Hi, Can you say How to convert a CString value to a char value. Thanks in advance.

[Rinu_Raj]

CString csStr("Test"); char* pbuff = csStr.GetBuffer(csStr.GetLength()) Rinu Raj

[Kiran Pinjala]

LPSTR GetBuffer(int;

KIRAN PINJARLA

[ashokbngr]

Hi, This link may be helpfull to u? Look into this.. http://www.flounder.com/cstring.htm regds, Ashok

[Christian Graus]

Two people have correctly told you how to get a char *, although neither told you that you need to call ReleaseBuffer() on the string when you're done with it. But if you want to access a single char from the string, you can use index notation to access one character at a time. CString s("sucka"); char u = s[1]; This is assuming a non Unicode build, of course.

Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog

[Stephen Hewitt]

Nor did they mention that if you don't need to modify the string a simple assignment will do the trick. i.e. LPCTSTR pStr = s;

Steve

[cpp_prgmer]

Well just for curiosity sake, I guess one needs to call ReleaseBuffer() only if the buffer supplied is manipulated with, like data is altered. Does one have to always call ReleaseBuffer(), i mean if he is just calling GetBuffer() just to convert it to form easy for display or copy etc??

[Stephen Hewitt]

Every call to GetBuffer should have a matching call to ReleaseBuffer. GetBuffer and ReleaseBuffer should only be used on code which alters the string. If you just want to inspect use operator LPCTSTR. Using this operator is automatic, ie: const char *pData = MyCString; As Christian suggested however, both of these methods should only be use when using a CString with code that knows nothing about CStrings - In general use CString's member functions to manipulate it's contents.

Steve

[cpp_prgmer]

hey, thx for the info. will ensure that for further coding.

[Zac Howland]

cpp_prgmer wrote:

Does one have to always call ReleaseBuffer()

Yes. A call to GetBuffer requires a call to ReleaseBuffer. Failing to do so results in a memory leak.

cpp_prgmer wrote:

i mean if he is just calling GetBuffer() just to convert it to form easy for display or copy etc??

There is no need to call GetBuffer for thos purposes. CString has an (LPCTSTR) operator to convert to const TCHAR* implicitly, so in non-UNICODE builds, that operator returns a const char*.

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week Zac