NSButton default button with blueish look

Question

I have a dialog with 1 or more buttons and want to be able to programmatically set the rightmost one be the default one, so that when the user presses the Enter or Return key it

Answer 1

The documentation says:

Note that if you set the key equivalent to Return, that button becomes the default button.

Thus, you're doing it correctly. You could try this after setting the key equivalent:

[button setNeedsDisplay:YES];

This forces the button to redraw itself.

Answer 2

My setting has been a custom sheet where I wanted the default button to appear like within an NSAlert. The following configuration gives me the blue default appearance. Works in 10.12.3 Sierra.

   button.bezelstyle = NSBezelStyleRounded; // Push in Interface Builder
   button.keyEquivalent = @"\r";
   button.highlighted = YES; // this is the most important part.

Answer 3

[myWindow setDefaultButtonCell:[btn cell]]; // should do the trick.

See Apple's documentation for more details.

Answer 4

I was missing to set the button bezel style properly and that's why it didn't look properly. I'm now setting the button as this:

[btn setBezelStyle:NSRoundedBezelStyle];

Then any of these work to set the default button:

[myWindow setDefaultButtonCell:[btn cell]]; 

or

[btn setKeyEquivalent:@"\r"] 

Answer 5

For Swift 4.2 just use

button.isHighlighted = true