The latest version of this topic can be found at _spawnvpe, _wspawnvpe.
Creates and executes a new process.
This API cannot be used in applications that execute in the Windows Runtime. For more information, see CRT functions not supported with /ZW.
intptr_t _spawnvpe( int mode, const char *cmdname, const char *const *argv, const char *const *envp ); intptr_t _wspawnvpe( int mode, const wchar_t *cmdname, const wchar_t *const *argv, const wchar_t *const *envp );
Execution mode for calling process
Path of file to be executed
Array of pointers to arguments. The argument
argv is usually a pointer to a path in real mode or to the program name in protected mode, and
n] are pointers to the character strings forming the new argument list. The argument
n +1] must be a
NULL pointer to mark the end of the argument list.
Array of pointers to environment settings
The return value from a synchronous
_P_WAIT specified for
mode) is the exit status of the new process. The return value from an asynchronous
_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 an array of pointers to command-line arguments and an array of pointers to environment settings. These functions use the
PATH environment variable to find the file to execute.
These functions validate their parameters. If either
argv is a null pointer, or if
argv points to null pointer, or
argv is an empty string, the invalid parameter handler is invoked, as described in Parameter Validation . If execution is allowed to continue, these functions set
EINVAL, and return -1. No new process is spawned.
||<stdio.h> or <process.h>|
||<stdio.h> or <wchar.h>|
For additional compatibility information, see Compatibility.
See the example in _spawn, _wspawn Functions.