Re: howto get global mouse states

FROM : Sean McBride
DATE : Mon Oct 04 18:58:03 2004

Christian Robl (<email_removed>) on Mon, Oct 4, 2004 06:34 said:

>I want to build a COCOA application wich should recenter its window on the
>current mouseposition if a particular mouse button is pressed (e.g. middle
>button).


First, I have to say that's a pretty weird thing to do, but I'll give you
the benefit of the doubt that you know what you're doing. :)

>In "awakefromnib" I call [NSEvent mouseLocation] for an initial window
>placement which works great. While running the app I can get some
>informations via polling [NSApp currentEvent] and
>processign according the Event occured, but as soon as I mov/click outside
>of the app's window
>no event occurs or is processed by my app.
>
>Whats wrong?


I guess that's by design.  If a click does not touch any interface
element of your application, then the OS sends the event elsewhere
(perhaps to another app's window that is underneath where you clicked).

>How can I get mouse states regardless if the apps window is
>clicked/active.


I don't know.  Perhaps you could make a big invisible window that covers
the screen(s) and is below all your other windows.  Then, presumably,
that window would get events.  I've never tried though.