MATLAB Creating Graphical User Interfaces

Write Callbacks in App Designer

NoteFor information on callbacks in GUIDE, see “Write Callbacks in GUIDE” on page 7-

2. If you are creating an app programmatically, see “Write Callbacks for Apps Created
   Programmatically” on page 10-5.

A callback is a function that executes when a user interacts with a UI component in your

app. Most components can have at least one callback. However some components, such

as labels and lamps, do not have callbacks because those components only display

information.

To see the list of callbacks that a component supports, select the component and click the

Callbacks tab in the Component Browser.

Create a Callback Function

There are several ways to create a callback for a UI component. You might use different

approaches depending on what part of App Designer you are working in. Choose the most

convenient approach from the following list.

• Right-click a component in the canvas, Component Browser, or App Layout pane,
  and select Callbacks > Add (callback property) callback.

17 App Programming