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

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.

Answer 1

[MathWorks Support Team]

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