MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Bedienungsanleitung PDF herunterladen (Seite 224)

100

101

9 Managing Application-Defined Data

9-12

2 Set the edit text value from the slider Callback callback. Add this statement

to the slider

Callback.

set(handles.edit1,'String',...

num2str(get(handles.slider1,'Value')));

3 Set the slider value from the edit text Callback callback. To do this, add the

following code to the edit text

Callback.

To update the number or errors, the code must first retrieve the value of the

edit text

UserData property, then increment the count. It then saves the

updated error count in the

UserData property and displays the new count.

val = str2double(get(hObject,'String'));

% Determine whether val is a number between 0 and 1

if isnumeric(val) & length(val)==1 & ...

val >= get(handles.slider1,'Min') & ...

val <= get(handles.slider1,'Max')

set(handles.slider1,'Value',val);

else

% Retrieve and increment the error count.

number_errors = get(hObject,'UserData');

number_errors = number_errors+1;

% Save the changes.

set(hObject,'UserData',slider_data);

% Display new total.

set(hObject,'String',...

['You have entered an invalid entry ',...

num2str(number_errors),' times.']);

end

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Bedienungsanleitung Seite 224

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