How do I disable a dropdown option?
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On my GUI on the appbuilder I have two dropdown menus with the same options, app.dropdown1 and app.dropdown2. Their Items are a1, a2, a3, and a4. How can I make it so that if I choose an item on dropdown1 it turns the visibility of it off on dropdown2.
Desired output: if dropdown1's value = a1 on dropdown2 only (a2,a3,a4) should be visible
回答（1 个）
Voss
2021-9-28
str = app.dropdown1.String; % store dropdown1's list of options
str(app.dropdown1.Value) = []; % remove the selected one
app.dropdown2.String = str; % apply it to dropdown2
Run those lines in dropdown1's Callback function. You probably also want to update app.dropdown2's Value property.
3 个评论
hbcukid
2021-9-29
Kevin Holly
2021-9-29
try app.dropdown1.Items instead of String
hbcukid
2021-9-29
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