MATLAB Creating Graphical User Interfaces

8 Programming a GUIDE UI

If you decide to change the Tag value after saving the UI, then GUIDE updates the

following items (assuming that all components have unique Tag values).

• Component's callback function definition


• Component’s callback property value


• References in the code file to the corresponding field in the handles structure

To rename a callback function without changing the component’s Tag property:

1 Change the name in the callback function definition.

2 Update the component’s callback property by changing the first argument passed

to the anonymous function. For example, the original callback property for a push

button might look like this:

@(hObject,eventdata)myui('pushbutton1_Callback',...

hObject,eventdata,guidata(hObject))

In this example, you must change the string, 'pushbutton1_Callback' to the new

function name.

3 Change all other references to the old function name to the new function name in the

UI code file.

Deleting Callbacks

You can delete a callback function when you want to remove or change the function that

executes when the end user performs a specific action. To delete a callback function:

1 Search and replace all instances that refer to the callback function in your code.

2 Open the UI in GUIDE and replace all instances that refer to the callback function

in the Property Inspector.

3 Delete the callback function.

More About

• “Anonymous Functions”