macos - What's the right replacement for PostEvent

Question

I'm getting a warning that PostEvent is deprecated and I assume that one is supposed to use PostEventToQueue but it takes two extra parameters and I can't find any documentation on what combination of parameters (one is a queue specification, the other is an event priority) will be equivalent to PostEvent.

Answer 1

PostEventToQueue is for a Carbon Event, not a low-level OS event like PostEvent. If you want to post a keyboard or mouse event, you should use CGEventPost.

Edit to add: To post a mouse down at the current location, I think (untested) that you can do this:

CGEventRef theEvent = CGEventCreate( NULL );
CGEventSetType( theEvent, kCGEventLeftMouseDown );
CGEventPost( theEvent );
CFRelease( theEvent );

Answer 2

I think it'd be reasonable to assume that using the event queue returned by GetMainEventQueue() (or GetCurrentEventQueue if you're on the main thread), and kEventPriorityStandard for the priority, will get you results equivalent to PostEvent.

Be aware, though, that these only affect your own application. Even the old Event Manager probably doesn't have access to an “Operating System event queue” anymore—I wouldn't be surprised if it's just a wrapper around the Carbon Event Manager version. You'd need to switch to CGEvent stuff if you want to post events that can hit other applications.