[SOLVED] Using `CGEventSourceSetLocalEventsSuppressionInterval` instead of the deprecated `CGSetLocalEventsSuppressionInterval`

Using `CGEventSourceSetLocalEventsSuppressionInterval` instead of the deprecated `CGSetLocalEventsSuppressionInterval`

When programmatically moving the mouse cursor, you must set CGSetLocalEventsSuppressionInterval to 0 so the events come in in real-time as opposed to with a 250 millisecond delay.

Unfortunately, CGSetLocalEventsSuppressionInterval is marked as deprecated in Snow Leopard.

The alternative is CGEventSourceSetLocalEventsSuppressionInterval(CGEventSourceRef source, CFTimeInterval seconds); https://developer.apple.com/library/mac/#documentation/Carbon/Reference/QuartzEventServicesRef/Reference/reference.html#//apple_ref/c/func/CGEventSourceSetLocalEventsSuppressionInterval

-(void) mouseMovement:(CGEventRef) newUserMouseMovement
{
    //Move cursor to new position
    CGSetLocalEventsSuppressionInterval(0.0); //Deprecated in OS X 10.6
    CGWarpMouseCursorPosition(NSPointToCGPoint(newMousePosition));
    CGSetLocalEventsSuppressionInterval(0.25); //Deprecated in OS X 10.6

    //--OR--//

    CGEventSourceRef source = ???;
    CGEventSourceSetLocalEventsSuppressionInterval(source, 0.0);
    CGWarpMouseCursorPosition(NSPointToCGPoint(newMousePosition));
    CGEventSourceSetLocalEventsSuppressionInterval(source, 0.25);
}

I can't get the latter method to work.

So I guess my question is how do I get the CGEventSourceRef required for that function?

Is it the event source for the user's normal mouse movement? Or for my manual warping of the cursor?

Solution

Event sources don't seem to be explained anywhere, and no one knows how to use them.

CGPoint warpPoint = CGPointMake(42, 42);
CGWarpMouseCursorPosition(warpPoint);
CGAssociateMouseAndMouseCursorPosition(true);

Call CGAssociateMouseAndMouseCursorPosition( true ) immediately after a warp call to make the Quartz events system drop the delay for this specific warp.