MATLAB Creating Graphical User Interfaces

5 GUIDE Preferences and Options

h = gcf

For a UI created in GUIDE, set the Command-line accessibility option to prevent

users from inadvertently changing the appearance or content of a UI by executing

commands at the command line or from a script or function, such as plot. The following

table briefly describes the four options for Command-line accessibility.

Option Description

Callback (GUI becomes Current

Figure within Callbacks)

The UI can be accessed only from within a

callback. The UI cannot be accessed from

the command line or from a script. This is

the default.

Off (GUI never becomes Current

Figure)

The UI can not be accessed from a callback,

the command line, or a script, without the

handle.

On (GUI may become Current Figure

from Command Line)

The UI can be accessed from a callback,

from the command line, and from a script.

Other (Use settings from Property

Inspector)

You control accessibility by setting the

HandleVisibility and IntegerHandle

properties from the Property Inspector.

Generate FIG-File and MATLAB File

Select Generate FIG-file and MATLAB file in the GUI Options dialog box if you

want GUIDE to create both the FIG-file and the UI code file (this is the default). Once

you have selected this option, you can select any of the following items in the frame to

configure UI code:

• “Generate Callback Function Prototypes” on page 5- 10


• “GUI Allows Only One Instance to Run (Singleton)” on page 5- 11


• “Use System Color Scheme for Background” on page 5- 11

See “Files Generated by GUIDE” on page 2-24 for information about these files.

Generate Callback Function Prototypes

If you select Generate callback function prototypes in the GUI Options dialog,

GUIDE adds templates for the most commonly used callbacks to the code file for most

components. You must then insert code into these templates.