Deriving a class from NSButton is not a daunting task by any imagination, you
only need understand that NSButton is nothing more than a wrapper class for
NSButtonCell.
As for the HIG.... it is a recommendation, and it indeed serves a purpose (IE
for programmers who thing all their users are programmers. However, you can not
design and effective POS (Point of Sale/Service) system using only what the
toolkit provides.
The reason you can not change the color, is because most of these are custom
drawn (perhaps even NSImages), just like you would when you override the
ButtonCell with your own implementation of it. Apple has simply provided a base
set which are very nice and clean, and should be used as examples for future
work. This is MUCH cleaner than trying to expose every possible option for
changing the look of a control. Why? When you can simply expose the draw
function, which apple has done; which it would not have, if it did not intend
for users to to user :)
The fact of the mater is I too need buttons that are much larger
//
// CustomButtonCell.h
//
//
#import <Cocoa/Cocoa.h>
@interface POSButtonCell : NSButtonCell <NSCopying> {}
- (id)copyWithZone:(NSZone *)zone;
- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView;
@end
//
// CustomButtonCell.m
//
#import "POSButtonCell.h"
@implementation POSButtonCell
- (id) init {
self = [super init];
if (self) { /* PUT YOUR INIT CODE HERE */ }
return self;
}
// So you can use with NSMatrix
- (id)copyWithZone:(NSZone *)zone{ return [[POSButtonCell alloc] init]; }
- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView
{
switch ([self state]) {
case NSOnState :
// Draw on state
break;
case NSMixedState :
// Draw mixed state
break;
default:
case NSOffState :
...
break;
}
}
@end
> From: [email protected]
> Date: Sun, 23 Jan 2011 09:43:07 -0600
> To: [email protected]
> CC: [email protected]
> Subject: Re: how to change NSButton color
>
>
> On Jan 23, 2011, at 8:14 AM, Dianne wrote:
>
> > I want to change the buttons color from the normal gray to dark gray to
> > indicate
> > whether the button is assigned to other values other than its default
> > value.
> >
> > Is there any other or best way to do this? what you can suggest?
> > Thanks,
> > Yani
> >
> >
> >
> Normally, if a button changes its functionality, you should at least change
> the label or icon inside the button.
> Effectively, you are changing the button to perform a different action.
> You might actually want to consider what the button needs to do in your
> application and revisit the types of controls already available in Cocoa and
> described in the Human Interface Guidelines. There might be a better control
> for the purpose of this button._______________________________________________
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