Header of _tcsstr

Question

Hello i have a copied a little code from the internet and it uses _tcsstr and i was wondering what the header of that method is so that i can use it...

Answer 1

Short answer: #include <tchar.h>

Long answer: Stop using TCHAR altogether. TCHAR was a Microsoft invention way back when it was common for code to cross compile for both ANSI based Windows 95/98 and Unicode based Windows NT(2000/XP). These days TCHAR is a rather antiquated concept. C/C++ projects targeting Windows should just have UNICODE and _UNICODE defined by default. Instead of using strstr or tcsstr, just use wcsstr. Replace all your TCHAR and LPTSTR references with wchar_t and LPWSTR as appropriate.