Service_MouseTrap (changes)
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WindowManager
» Service Calls
» Service_MouseTrap
Service_MouseTrap
(Service Call &52)
| Entry | |
|---|---|
| R0 | Mouse x co-ordinate |
| R1 | 82 (&52) |
| R2 | Button state (from OS_Mouse) |
| R3 | Time of mouse event (from OS_ReadMonotonicTime) |
| R4 | Mouse y co-ordinate |
| Exit | |
|---|---|
| - | All registers preserved |
Use
This service is issued to inform applications that it has detected mouse movement.
Notes
This is often used by applications that wish to record mouse movements and it the state of the mouse buttons so they can be played back. This can be very useful to produce applications that simulate human interaction. e.g. Demonstration software.
Applications that record the mouse positions and states, should also monitor INKEY values as well. Both positive and negative.
See also
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