Problem with Toggling Invisibility of Edit Text Box

I've been trying to toggle the invisibility of a text box and its labels using the state buttons in Matlab, but can't figure out why it doesn't work.

There aren't any error messages popping up, just that when I press the state button in my GUI, nothing happens.

function StateButton_Pushed(app, eventdata)
    button_state = get(app.StateButton, 'Value');
    if button_state == get(app.StateButton, 'Max')
        set(app.StateEditFieldLabel, 'Visible', 'on');
        set(app.StateEditField, 'Visible','on');
    elseif button_state == get(app.StateButton, 'Min')
        set(app.StateEditFieldLabel, 'Visible', 'off');
        set(app.StateEditField, 'Visible','off');
    end
end

Also I have the StateEditField and StateEditFieldLabel both preset to be invisible in the constructor.

What is the problem here?

[Geoff Hayes]

Caleb - use the MATLAB debugger and place breakpoints in the above code. Then run your app and press the button so that you can step through the code with the debugger. Look closely at what the button_state is set to and then compare it with the get(app.StateButton, 'Max') and get(app.StateButton, 'Min') values. Out of curiosity, is the StateButton a normal button or a toggle button?

[Walter Roberson]

And add drawnow()

[Caleb Helmen]

Thank you! I'll try that.

StateButton is a toggle button. Also what exactly does drawnow() do?

[Geoff Hayes]

drawnow updates the figure and processes the callbacks. Is there something in the eventdata that might help you determine the state of the toggle button?

Answer 1

[Allen]

With App Designer you need to look at the Object's value property as you are doing. However, it will return a logical value. If it is depressed it will return 1 (true), else it will return 0 (false).

function StateButton_Pushed(app, eventdata)
    value = app.StateButton.Value;
    if value % I am considering this the pressed state
        set(app.StateEditFieldLabel, 'Visible', 'on');
        set(app.StateEditField, 'Visible','on');
    elseif ~value % I am considering this the normal state
        set(app.StateEditFieldLabel, 'Visible', 'off');
        set(app.StateEditField, 'Visible','off');
    end
end

[Caleb Helmen]

Thank you, this helped. I changed the code to receive logical values for the .Value statements and it seemed to make it work.