MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Betriebsanweisung PDF herunterladen (Seite 81)

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101

CodetheSimpleProgrammaticGUI

that particular event. But how does the software know which callback to

execute? You must use each component’s

Callback property to specify the

name of the callback with which it is associated.

1 To the uicontr ol statement that defines the Surf push button, add the

property/value pair

'Callback',{@surfbutton_Callback}

so that the statement looks like this:

hsurf = uicontrol('Style','pushbut ton','String','Surf',...

'Position',[315,220,70,25],...

'Callback',{@surfbutton_Callback});

Callback

isthenameoftheproperty.surfbutton_Callback is the name

of the callback that services the Surf push button.

2 Similarly, to the uicontrol statement that defines the Mesh push button,

add the property/value pair

'Callback',{@meshbutton_Callback}

3 To the uicontrol statement that defines the Contour push button, add

the property/value pair

'Callback',{@contourbutton_Callback}

4 To the uico ntro l statement that defines the pop-up menu, add the

property/value pair

'Callback',{@popup_menu_Callback}

For more information, see “Write Code for Callbacks” on page 12-7.

Initialize the Simple Programmatic GUI

When you make t he GUI visible , it should b e initialized so that it is ready for

the user. This topic shows you how to

• Make the GUI behave properly when it is resized by changing the

component and figure units to

normalized. This causes the components to

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