MATLAB: How to change the drop-down menu options in App Designer

MATLAB

How can I change the drop-down menu options in App Designer?

I am using appdesigner to build GUIs. In some cases, I would like to be able to change the drop-down choices after the GUI is opened, based on the context.

Best Answer

You can do this by modifying the "Items" property of DropDown.

For example, the following code within a CheckBox's callback will change the options you have in the DropDown object:

>> value = app.CheckBox.Value;
>> if value == 1
>>    app.DropDown.Items = {'Option 3', 'Option 4'};
>> else
>>    app.DropDown.Items = {'Option 1', 'Option 2'};
>> end

Related Solutions

MATLAB: How to enable a button after another button’s procedure has completed in App Designer

Attached is a simple app that accomplishes this as an example. The relevant code is in the first button's callback:

function computeFunction(app, event)
    set(app.NotComputingLabel, 'Text', 'Computing...')
      % your computation
      pause(3);
      set(app.NotComputingLabel, 'Text', 'Done Computing!')
      set(app.AccessibleAfterComputeButton, 'Enable', 'on')
  end

You can set the second button to be disabled by selecting it in the Design View and changing the "Enable" property on the right, in the "Button Properties" section.

MATLAB: Change line from Guide to Appdesigner

app.DropDown.Items = cellstr(num2str((1:65)'));

Best Answer

Related Solutions

MATLAB: How to enable a button after another button’s procedure has completed in App Designer

MATLAB: Change line from Guide to Appdesigner

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