MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guía de usuario descargar pdf (Pagina 80)

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3 How to Create a Simple GUI Programmatically

end

The next topic, “Program the Push Buttons” on page 3-12, shows you how to

write callbacks for the three push buttons.

Program the Push Buttons

Each of the three push buttons creates a different type of plot using the

data specified by the current selection in the pop-up menu. The push button

callbacks plot the data in

current_data. They automatically have access to

current_data because they are nested at a lower level.

Add the following callback s to your file following t he pop-up m en u callback

and before the final

end statement.

% Push button callbacks. Each callback plots curr ent_data in the

% specified plot type.

function sur fbut ton_Callback(source,eve ntdata)

% Display surf plot of the currently selec ted data.

surf(current_data);

end

function mes hbut ton_Callback(source,eve ntdata)

% Display mesh plot of the currently selec ted data.

mesh(current_data);

end

function con tour button_Callback(source, eventdata)

% Display contour plot of the currently se lected data.

contour(current_data);

end

The next topic shows you how to associate each callback with its specific

component.

Program Callbacks for the Simple GUI Components

When the GUI user selects a data set from the pop-up menu or clicks one o f

the push buttons, MATLAB software executes the callback associated with

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