ptid (PTID) - in/out

Address of the thread identification.

Input

The address of the ThreadID of the thread of interest. If ptid is 0, the current thread waits until the next thread in the process has ended. If ptid is nonzero, the current thread waits until the indicated thread has ended.
Output
The ThreadID of the ended thread is returned in this field.

option (ULONG) - input

An indicator that specifies whether to return if no thread has ended.

The values of this field are shown in the following list:

• DCWW_WAIT The current thread waits until a thread ends. If a thread has already ended, the call returns immediately with the ptid.

• DCWW_NOWAIT
  The current thread does not wait if no threads have ended.

ulrc (APIRET) - returns

Return Code.

DosWaitThread returns one of the following values:

• NO_ERROR 95
  ERROR_INTERRUPT
  294
  ERROR_THREAD_NOT_TERMINATED
  309
  ERROR_INVALID_THREADID
  For a full list of error codes, see Errors.

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