How do I disable a UIButton?

I am working on a project in which I have to show all photos of Photo Library in a plist and show them horizontally on UIButtons.

My app will also have an edit button: when the user clicks this button, a delete mark (such as usually appears in other iPhone/iPad apps) should show on each button.

But here's the crucial bit: as soon as this delete mark appears, the functionality of the button should be disabled. I've tried accomplishing this with the following:

{
  editbutton.enabled=NO;
}

...but it neither produces an error nor works. What should I do?

Please set this...

 editButton.userInteractionEnabled = NO; 

or You can use

 editButton.enabled = NO;

Swift 3 and above

editButton.isEnabled = false

setEnabled is now part of the setter method for isEnabled.

setter for property enabled is overridden in class UIButton. try to send a message.

 [editbutton setEnabled:NO];

Use the enabled property of UIControl which the super class of UIButton and set it with NO.

myButton.enabled = NO;

You could also try as @Marvin suggested, In that case your button will not respond to any touch event from user,