MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Spécifications télécharger pdf (Page 40)

1 Getting Started with GUIDE

1-32

Designing a Slider

Suppose you want to create a slider with the following behavior:

•Slider range = 5 to 8

•Arrow step size = 0.4

•Trough step size = 1

•Initial value = 6.5

From these values you need to determine and set the

Max, Min, SliderStep, and

Value properties. You can do this by adding the following code to the

initialization section of the application M-file (after the creation of the

handles

structure).

slider_step(1) = 0.4/(8-5);

slider_step(2) = 1/(8-5);

set(handles.slider1,'sliderstep',slider_step,...

'max',8,'min',5,'Value',6.5)

You can also assign the slider properties using the Property Inspector:

•

SliderStep, X .133

•SliderStep, Y .333

•Max 8

•Min 5

•Value 6.5

Triggering Callback Execution

The slider callback is executed when the user releases the mouse button.

Frames

Frames are boxes that enclose regions of a figure window. Frames can make a

user interface easier to understand by visually grouping related controls.

Frames have no callback routines associated with them and only uicontrols can

appear within frames (axes cannot).

Placing Components on Top of Frames

Frames are opaque. If you add a frame after adding components that you want

to be positioned within the frame, you need to bring forward those components.

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Spécifications Page 40