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100

101

11 Lay Out a Programmatic GUI

The Value property specifies w hether the radio button is selected when the

component is created. Set

Value to the value of the Max property (default is

1) to create the component with the radio button selected. Set Value to Min

(default is 0) to leave the radio button unselected.

The

Position property specifies the location and size of the radio button. In

this example, the radio button is 150 pixels wide and 2 0 high. It is positioned

30 pixels from the left of the figure and 20 pixels from the bottom. The

statementassumesthedefaultvalueofthe

Units property, which is pixels.

Note You can also use an image as a label. See “Add an Image to a Push

Button” on page 11-26 for more information.

Slider

The following statement creates a slider with handle sh:

sh = uicontrol(fh,'Style','slider' ,...

'Max',100,'Min',0,'Value',25,...

'SliderStep',[0.05 0.2],...

'Position',[30 20 150 30]);

• The first argument, fh, specifies the handle of the parent figure. You can

also specify the parent as a panel or button group. See “Panel” on page

11-35 and “Button Group” on page 11-36 for more information.

• The

Style property, slider, specifies the u ser interface control as a slider.

• Specify the range of the slider by setting its

Min property to the minim um

value o f the slider and its

Max property to the maximum value. The Min

property must be less than Max.

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guida Utente Pagina 516

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