MATLAB Creating Graphical User Interfaces

8 Programming a GUIDE UI

Write Callbacks Using the GUIDE Workflow

In this section...

“Callbacks for Different User Actions” on page 8- 2

“GUIDE-Generated Callback Functions and Property Values” on page 8- 4

“GUIDE Callback Syntax” on page 8- 5

“Renaming and Removing GUIDE-Generated Callbacks” on page 8- 5

Callbacks for Different User Actions

UI and graphics components have certain properties that you can associate with specific

callback functions. Each of these properties corresponds to a specific user action. For

example, a uicontrol has a property called Callback. You can set the value of this

property to be a handle to a callback function, an anonymous function, or a string

containing MATLAB commands. Setting this property makes your UI respond when the

user interacts with the uicontrol. If the Callback property has no specified value, then

nothing happens when the end user interacts with the uicontrol.

This table lists the callback properties that are available, the user actions that trigger

the callback function, and the most common UI and graphics components that use them.

Callback Property User Action Components That Use This Property

ButtonDownFcn End user presses a mouse button

while the pointer is on the

component or figure.

axes, figure, uibuttongroup,

uicontrol, uipanel, uitable,

Callback End user triggers the component.

For example: selecting a menu

item, moving a slider, or pressing

a push button.

uicontextmenu, uicontrol,

uimenu

CellEditCallbackEnd user edits a value in a table

whose cells are editable.

uitable

CellSelectionCallbackEnd user selects cells in a table. uitable

ClickedCallback End user clicks the push tool or

toggle tool with the left mouse

button.

uitoggletool, uipushtool

CloseRequestFcnThe figure closes. figure