MouSynch

This call provides synchronous access for a mouse subsystem to the mouse device driver.

Syntax
MouSynch (IOWait)

Parameters

 * IOWait (USHORT) - input : Wait for access. The flag Word is defined as follows:
 * 0 - Control immediately returned to requestor.
 * 1 - Requestor waits until mouse device driver is free.

Return Code

 * rc (USHORT) - return:Return code descriptions are:
 * 0 NO_ERROR
 * 121 ERROR_SEM_TIMEOUT

Remarks
MouSynch blocks all other threads within a session until the semaphore clears (returns from the subsystem to the router). To ensure proper synchronization, MouSynch should be issued by a mouse subsystem if it intends to access dynamically modifiable shared data for each session or if it intends to issue a DosDevIOCtl. MouSynch does not protect globally shared data from threads in other sessions.

C
 USHORT rc = MouSynch(IOWait); USHORT IOWait;        /* Indicate wait/no wait */ USHORT rc;            /* return code */ 
 * 1) define INCL_MOU

MASM
 EXTRN MouSynch:FAR INCL_MOU           EQU 1

PUSH  WORD    IOWait        ;Indicate wait/no wait CALL  MouSynch

Returns WORD 