Re: Help with text input
Re: Help with text input
- Subject: Re: Help with text input
- From: Douglas Davidson <email@hidden>
- Date: Thu, 29 Apr 2010 17:47:07 -0700
On Apr 29, 2010, at 5:26 PM, Charles Srstka wrote:
> On Apr 29, 2010, at 5:38 PM, Jens Alfke wrote:
>
>> - (void) keyDown: (NSEvent*)event {
>> event.characters;
>> event.isARepeat;
>> }
>
> I don’t think that will do the special characters that you can type via the Option key. What you want to do is to make your text view conform to the NSTextInputClient protocol, which is documented here:
>
> http://developer.apple.com/mac/library/documentation/cocoa/reference/NSTextInputClient_Protocol/Reference/Reference.html
>
> This will give you not only the option key, but also make all the standard Mac OS text editing shortcuts work, as well as any custom key bindings the user has defined. It’s pretty nifty, and will make your users like your app a lot better.
Simple keyDown: handling might do for cases where you're just interested in keystrokes as individual events--for example, if you were using arrow keys to move something in your UI. If you're really taking textual input, you're going to want the full input protocols; that's how you're going to get not only dead key support but also input from arbitrary sources such as input methods. The easiest way to do this is to make use of an existing class that implements them, such as NSTextView--that's how the standard Cocoa controls do it--but it's always open to you to implement them yourself if necessary.
Douglas Davidson
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