MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manual de usuario descargar pdf (Pagina 199)

Examples: Programming GUI Components

8-27

For radio buttons and toggle buttons that are managed by a button group, you

must include the code to control them in the button group’s

SelectionChangeFcn callback function, not in the individual component

Callback functions. A button group overwrites the Callback properties of

radio buttons and toggle buttons that it manages.

This example of a

SelectionChangeFcn callback uses the Tag property of the

selected object to choose the appropriate code to execute.

function uibuttongroup1_SelectionChangeFcn(hObject,eventdata,handles)

switch get(hObject,'Tag') % Get Tag of selected object

case 'radiobutton1'

% Code for when radiobutton1 is selected goes here.

case 'radiobutton2'

% Code for when radiobutton2 is selected goes here.

% Continue with more cases as necessary.

end

Note For a button group, contrary to the automatically generated comment,

hObject is the handle of the selected radio button or toggle button, and not the

handle of the button group. Use

handles.uipaneln as the handle of the button

group, where

uipaneln is the Tag of the button group.

The code above refers to the handle of

uipanel1 rather than the handle of

uibuttongroup1, because a button group is a kind of panel.

Axes

Axes components enable your GUI to display graphics, such as graphs and

images. This topic provides two examples:

• “Plotting to a GUI with a Single Axes” on page 8-27

• “Plotting to a GUI with Multiple Axes” on page 8-29

Plotting to a GUI with a Single Axes

If a GUI contains only one axes, MATLAB automatically generates the plot in

that axes.

In most cases, you create a plot in an axes from a callback that belongs to some

other component in the GUI. For example, pressing a button might trigger the

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manual de usuario Pagina 199