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_spawnle, _wspawnle

Create and execute a new process.

intptr_t _spawnle(
   int mode,
   const char *cmdname,
   const char *arg0,
   const char *arg1,
   ... const char *argn,
   const char *const *envp 
intptr_t _wspawnle(
   int mode,
   const wchar_t *cmdname,
   const wchar_t *arg0,
   const wchar_t *arg1,
   ... const wchar_t *argn,
   const wchar_t *const *envp 


Execution mode for calling process
Path of file to be executed
arg0, arg1, ... argn
List of pointers to arguments
Array of pointers to environment settings

Return Value

The return value from a synchronous _spawnle or _wspawnle (_P_WAIT specified for mode) is the exit status of the new process. The return value from an asynchronous _spawnle or _wspawnle (_P_NOWAIT or _P_NOWAITO specified for mode) is the process handle. The exit status is 0 if the process terminated normally. You can set the exit status to a nonzero value if the spawned process specifically calls the exit routine with a nonzero argument. If the new process did not explicitly set a positive exit status, a positive exit status indicates an abnormal exit with an abort or an interrupt. A return value of –1 indicates an error (the new process is not started). In this case, errno is set to one of the following values:

Argument list exceeds 1024 bytes
mode argument is invalid
File or path is not found
Specified file is not executable or has invalid executable-file format
Not enough memory is available to execute new process

See _doserrno, errno, _sys_errlist, and _sys_nerr for more information on these, and other, return codes.


Each of these functions creates and executes a new process, passing each command-line argument as a separate parameter and also passing an array of pointers to environment settings.


Routine Required header Compatibility
_spawnle <process.h> Win 98, Win Me, Win NT, Win 2000, Win XP
_wspawnle <stdio.h> or <wchar.h> Win NT, Win 2000, Win XP

For additional compatibility information, see Compatibility in the Introduction.


All versions of the C run-time libraries.


See the example in _spawn, _wspawn Functions.

See Also

Process and Environment Control Routines | _spawn Functions Overview | abort | atexit | _exec Functions | exit | _flushall | _getmbcp | _onexit | _setmbcp | system | Run-Time Routines and .NET Framework Equivalents