spawn Constants
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spawn Constants 


#include <process.h>

The mode argument determines the action taken by the calling process before and during a spawn operation. The following values for mode are possible:

Constant Meaning

_P_OVERLAY

Overlays calling process with new process, destroying calling process (same effect as _exec calls).

_P_WAIT

Suspends calling thread until execution of new process is complete (synchronous _spawn).

_P_NOWAIT, _P_NOWAITO

Continues to execute calling process concurrently with new process (asynchronous _spawn).

_P_DETACH

Continues to execute calling process; new process is run in background with no access to console or keyboard. Calls to _cwait against new process will fail. This is an asynchronous _spawn.

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