Important: The information in this document is obsolete and should not be used for new development.
SlotVRemoveYou can use the
SlotVRemovefunction to remove a task record from a slot-based vertical retrace queue.
FUNCTION SlotVRemove (vblTaskPtr: QElemPtr; theSlot: Integer): OSErr;
- A pointer to the task record to remove from its queue.
- The slot number of the video device from whose vertical retrace queue the task record is removed.
SlotVRemovefunction removes the task record specified by the
vblTaskPtrparameter from the vertical retrace queue associated with the video device specified by the
To disable a slot-based VBL task temporarily, you can set the
vblCountfield of the task record to 0.
ASSEMBLY-LANGUAGE INFORMATIONThe registers on entry and exit for
Registers on entry A0 Pointer to the task record D0 Slot number of the device associated with the vertical retrace queue
Registers on exit D0 Result code
noErr 0 No error qErr -1 Task record isn't in the queue vTypErr -2 Invalid
qTypevalue (must be
slotNumErr -360 Invalid slot number