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Using control:textView:doCommandBySelector

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Using control:textView:doCommandBySelector

Subject: Using control:textView:doCommandBySelector
From: Duncan Champney <email@hidden>
Date: Mon, 11 Feb 2008 15:11:21 -0500

I must confess, I don't get Cocoa bindings. I've used them for user defaults, and that's it.

My app has a number of NSTextField/slider pairs for inputting numeric values. I'd like to support having the up and down arrow keys increase/ decrease my values by a set amount, and having shift up/down arrow increase/decrease by 10x that amount. (much like PhotoShop does.)

I could do this by subclassing NSTextField and adding a new -keyDown method that handled the up and down arrow keys.The control:textView:doCommandBySelector method seems like a more elegant way to make this work. However, I have no clue how to set up key bindings for my control fields in IB, and can't find any documentation to explain what I need to do.

In addition to needing some specific guidance on this particular issue, I'd also like to know a good reference (online or print) that explains using Cocoa bindings clearly, including working code examples? Most of the print manuals I use don't cover this subject.

Thanks in advance for any help you can offer.

Regards,


Duncan Champney
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