Re: Capturing keydown events in an NSImageView?
Re: Capturing keydown events in an NSImageView?
- Subject: Re: Capturing keydown events in an NSImageView?
- From: Brent Gulanowski <email@hidden>
- Date: Fri, 25 Jun 2004 13:14:40 -0400
On Fri, 25 Jun 2004 11:55:10 -0400, Jerry LeVan <email@hidden> wrote:
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Hello,
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I am trying to capture keydown events for an ImageView.
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I have subclassed NSImageView ....
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--------
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#import <Cocoa/Cocoa.h>
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@interface KeyImageView : NSImageView
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{
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IBOutlet id theController; // provides access to main controller
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object
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}
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-(BOOL)acceptsFirstResponder;
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-(BOOL)resignFirstResponder;
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-(BOOL)becomeFirstResponder;
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-(void)keyDown:(NSEvent*)theEvent;
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@end
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-------------
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#import "KeyImageView.h"
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@implementation KeyImageView
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-(BOOL)acceptsFirstResponder
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{
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NSLog(@"Accepting First Responder");
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return YES;
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}
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-(BOOL)resignFirstResponder
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{
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NSLog(@"Resigned First Responder");
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return YES;
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}
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-(BOOL)becomeFirstResponder
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{
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NSLog(@"Become First Responder");
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}
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-(void)keyDown:(NSEvent*)theEvent
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{
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NSLog(@"Key down: %@",theEvent);
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}
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@end
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--------
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The only message I get on the console is the Accept message
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the Become message never fires and key strokes always get
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the "bell".
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What am I missing here?
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Thanks,
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Jerry
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That's all good, but you also have to make that view the first
responder. I haven't dealt with this question in two years, but then I
had to send the window a makeFirstResponder: message with the view as
the argument. There's an outlet for first responder in NSWindow and
you can connect it in IB, but I don't remember that doing what I
wanted.
You can tell if your view is not getting set as first responder if the
behaviour you want happens after you click the view with the mouse.
Cheers,
Brent
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