MouSynch

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

MouSynch

(IOWait)

IOWait (USHORT) - input

Wait for access. The flag Word is defined as follows:

Value

Definition
0
Control immediately returned to requestor.
1
Requestor waits until mouse device driver is free.
rc (USHORT) - return
Return code descriptions are:
• 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.

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