Events
Apr 8, 3 PM - May 28, 7 AM
Sharpen your AI skills and enter the sweepstakes to win a free Certification exam
Register now!Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Determines the length of the specified string (not including the terminating null character).
int lstrlenA(
[in] LPCSTR lpString
);
[in] lpString
Type: LPCTSTR
The null-terminated string to be checked.
Type: int
The function returns the length of the string, in characters. If lpString is NULL, the function returns 0.
Note
The winbase.h header defines lstrlen as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | winbase.h (include Windows.h) |
| Library | Kernel32.lib |
| DLL | Kernel32.dll |
Conceptual
Reference