MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Instrukcja Użytkownika Pobierz pdf (Strona 207)

Examples: Programming GUI Components

8-35

handles.default_radius = handles.activex1.radius;

3 In the activex1_Click callback, reset the slider’s Value each time the user

clicks the circle in the ActiveX control. The following command causes the

slider to change position corresponding to the new value of the radius.

set(handles.slider1,'Value',...

hObject.radius/handles.default_radius);

When you open the GUI and move the slider by clicking and dragging, the

radius changes to a new value between 0 and the default radius of 20, as shown

in the following figure.

Viewing the Methods for an ActiveX Control

To view the available methods for an ActiveX control, you first need to obtain

the handle to the control. One way to do this is the following:

1 In the GUI M-file, add the command keyboard on a separate line of the

activex1_Click callback. The command keyboard puts MATLAB in debug

mode and pauses at the

activex1_Click callback when you click the

ActiveX control.

2 Run the GUI and click the ActiveX control.

The handle to the control is now set to

hObject. To view the methods for the

control, enter

methodsview(hObject)

1 2 ... 202 203 204 205 206 207 208 209 210 211 212 ... 329 330

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Instrukcja Użytkownika Strona 207