Debug versions of thefunctions (only available during debug).
char *_getcwd_dbg( char *buffer, int maxlen, int blockType, const char *filename, int linenumber ); wchar_t *_wgetcwd_dbg( wchar_t *buffer, int maxlen, int blockType, const char *filename, int linenumber );
Storage location for the path.
Maximum length of the path in characters: char for _getcwd_dbg and wchar_t for _wgetcwd_dbg.
Requested type of the memory block: _CLIENT_BLOCK or _NORMAL_BLOCK.
Pointer to the name of the source file that requested the allocation operation or NULL.
Line number in the source file where the allocation operation was requested or NULL.
Returns a pointer to buffer. A NULL return value indicates an error, and errno is set either to ENOMEM, indicating that there is insufficient memory to allocate maxlen bytes (when a NULL argument is given as buffer), or to ERANGE, indicating that the path is longer than maxlen characters.
For more information, see.
The _getcwd_dbg and _wgetcwd_dbg functions are identical to _getcwd and _wgetcwd except that, when _DEBUG is defined, these functions use the debug version of malloc and _malloc_dbg to allocate memory if NULL is passed as the first parameter. For more information, see.
You do not need to call these functions explicitly in most cases. Instead, you can define the _CRTDBG_MAP_ALLOC flag. When _CRTDBG_MAP_ALLOC is defined, calls to _getcwd and _wgetcwd are remapped to _getcwd_dbg and _wgetcwd_dbg, respectively, with the blockType set to _NORMAL_BLOCK. Thus, you do not need to call these functions explicitly unless you want to mark the heap blocks as _CLIENT_BLOCK. For more information, see .
Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003
Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003
For more compatibility information, seein the Introduction.