Creating Graphical User Interfaces

Programming the GUI M-file

After laying out your GUI, you can program the GUI M-file using the M-file editor. GUIDE automatically generates this file from your layout the first time you save or run the GUI. The GUI M-file

• Initializes the GUI
• Contains code to perform tasks before the GUI appears on the screen, such as creating data or graphics
• Contains the callback functions that are executed each time a user clicks a GUI component

Initially, each callback contains just a function definition line. You then use the M-file editor to add code that makes the component function the way you want it to. To open the M-file, click the M-file Editor icon on the Layout Editor toolbar. The following figure shows the M-file for the GUI with Axes and Menu template.

You can view the callback for any of the GUI components by clicking the function icon on the toolbar. This displays a list of all the callbacks, as shown in the following figure.

Clicking a callback on the list displays the section of the M-file containing the callback, where you can edit it. This example shows the callback template for pushbutton1_Callback.

To learn more about programming the M-file, see Programming GUIs.

GUI FIG-Files and M-Files

Editing Version 5 GUIs with Version 7 GUIDE

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