Returns the length of the specified string
#include <WinAPIMisc.au3>
_WinAPI_StrLen ( $pString [, $bUnicode = True] )
| $pString | Pointer to a null-terminated string. |
| $bUnicode | [optional] Specifies whether a string is Unicode or ASCII code of a character, valid values: True - Unicode (Default). False - ASCII. |
| Success: | The length of the string, in TCHARs values (not including the null-terminating character). |
| Failure: | 0. |
Search lstrlen in MSDN Library.