MATLAB Object-Oriented Programming

Class Methods for Graphics Callbacks

In this section...

“Referencing the Method” on page 9-52

“Syntax for Method Callbacks” on page 9-52

“Use a Class Method for a Slider Callback” on page 9-53

Referencing the Method

To use an ordinary class method as callback for a graphics object, specify the callback

property as a function handle referencing the method. For example,

uicontrol('Style','slider','Callback',@obj.sliderCallback)

Where your class defines a method called sliderCallback and obj is an instance of

your class.

To use a static method as a callback, specify the callback property as a function handle

that includes the class name that is required to refer to a static method:

uicontrol('Style','slider','Callback',@MyClass.sliderCallback)

Syntax for Method Callbacks

For ordinary methods, use dot notation to pass an instance of the class defining the

callback as the first argument:

@obj.methodName

Define the callback method with the following input arguments:

• An instance of the defining class as the first argument


• The event source handle


• The event data

The function signature would be of this form:

function methodName(obj,src,eventData)

...

end

9 Methods — Defining Class Operations