Making custom key-commands
Making custom key-commands
- Subject: Making custom key-commands
- From: James Maxwell <email@hidden>
- Date: Mon, 17 Dec 2007 11:50:04 -0800
Hello All,
I'm new to Cocoa and Objective-C, having recently started a project to
port a music notation-based GUI I've been writing in Java/Processing,
over to Cocoa. There are a number of reasons for the change, the main
one being that Processing is really hard on the cpu!
Things are basically going fine, but I'm a bit stumped about handling
key strokes, particularly in the sense of creating my own key-
commands. Can anyone clarify the best way to go about this? Even just
starting with something simple, like using backspace and/or delete to
delete the selected object (from a custom view - I don't need help
with the deleting part... just registering the delete/backspace). Some
places say to override keyDown, while others suggest this isn't a good
idea, and I'm finding Apple's documentation more than a little bit
confusing on what best-practice really is.
Other examples of the things I need to do would be things like
creating particular subclasses of objects if a given key is held at
the time the object is created, or toggling an attribute of a given
object using a specific key. This stuff is all really simple in
Processing, and probably simple enough in Cocoa, but I've no idea
where to start...
Any help or pointers greatly appreciated - and code snippets even more
so! ;-)
thanks,
J.
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