Using Push Buttons
A push button performs the action described by the button’s name. Generally, it’s a rounded rectangle that contains its name inside. For example, this button might appear in a dialog box that finds text in a document:
It’s easiest to create a push button in Interface Builder. You can also create one programmatically by creating an
NSButton instance with a type of
NSMomentaryPushInButton, an image position of
NSNoImage, and a border of
You can also have a push button that’s an icon button; that is, one that’s primarily identified by its icon and has little or no text. It’s rectangular, like this:
You can create an icon push button in either Interface Builder or programmatically. If you use Interface Builder, start with a regular push button. If you create it programmatically, create an
NSButton instance, then set its type to
NSMomentaryPushInButton, its image position to
NSImageOnly, its bezel type to a square bezel type. Finally, set the image to what you want.
You can also have a push button that toggles between two states, with each state having its own title and image. For example, a button could toggle between Start and Stop. You can create one in the same way you create a regular push button with either Interface Builder or programmatically. Just change the button type to
NSToggleButton. Then give the button an alternate title and image as well as a regular title and image. The button displays the regular title and image at first, then displays the alternate title and image after the user clicks it.
© 2008 Apple Inc. All Rights Reserved. (Last updated: 2008-10-15)