Question

I am making an application where there are 32 Check Box, and a NSTextField.
If the user clicks on the NSTextField the buttons shall assume the value that describes the binary rappresentation of this number.
No problem receiving the “clicked” action on the NSTextField, but for the buttons I have declared an array of 32 NSButtons:

#import <Foundation/Foundation.h>


@interface Handler : NSObject 
{
    @private
    IBOutlet NSTextField* textField;
    IBOutlet NSButton* bits[32];     // here are the buttons
}

- (void)awakeFromNib;
- (void) setTextField : (int) value;
- (int) getTextField;
@end

But when I try to link a Check Box with the IBOutlet “bits”, I can’t do it for each member.
So I can only make that array of 32 pointers to NSButton to one box.
I also show an image:

This is a problem for me, do I have to manually declare 32 different outlets with 32 different names?

Answer 1

This is probably a good example of using an NSMatrix object.

You can add one button to your interface and then with the button selected in Xcode 4 go to Editor > Embed In > Matrix. Then you can option drag on a corner of the button to expand it into a matrix.

NSMatrix allows you to retrieve the cell values by searching for a given tag or by column/row coordinates.

HOW TO:
1) Embedding the NSButton object:

2) Option-Drag any of the button corners to expand the matrix: