Hi Alastair, Thanks a lot for this - it makes my life harder but at least I know how it works now.
All the Best Dave > On 17 Jul 2016, at 21:03, Alastair Houghton <alast...@alastairs-place.net> > wrote: > > On 17 Jul 2016, at 14:06, Dave <d...@looktowindward.com> wrote: >> >> My question is, do the keyboard and Mouse Down Events come in pairs, so that >> the following would/should not occur: > > No. KeyDown happens when the key goes down, KeyUp happens when they key > comes back up. Likewise with MouseDown and MouseUp, and they can happen in > any order relative to one another (or relative to another KeyDown/Up or > MouseDown/Up). > >> Thanks a lot for any info on this. From looking at it, I think that the >> MouseDown/Up and KeyboardDown/Up must come if pairs with no events to the >> other device(s) in between, but it would be nice to know for sure! > > The reason you see this kind of behaviour sometimes is that *some* views > process events in a loop in their -mouseDown: handler. See this blog post I > wrote in 2007 about event handling, which shows two different ways of > handling -mouseDown: and talks a bit about eating keypresses during > processing. > > https://alastairs-place.net/blog/2007/11/19/commands-and-mo/ > > Kind regards, > > Alastair. > > -- > http://alastairs-place.net > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
