Matlab App Designer - Press one button, then wait for the user to press another button, and get the name of the button pressed.

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Bertie Kemp 2023-6-8

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回答： Divyanshu 2023-6-12

I would like to have the user select a button, then select another button to "link" the two buttons together. To do this, my plan was: once the first button is pushed, blink a lamp showing the program is waiting for another input, and then read the name/identifier of the next button that the user clicks on. I am unsure on how to do this, any advice would be much appriciated. Thanks

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Kevin Holly 2023-6-9

How did you want to link the two buttons? Will they share the same callback function once linked? Will they visibly be linked?

Rik 2023-6-9

It is probably a good idea to have a sketch of your GUI (or a screenshot), along with what you have already tried.

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Answer 1

Divyanshu 2023-6-12

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Hi Bertie,

Here are few assumptions based on the description provided:

Linking two buttons is not physically linking instead it is a series of events getting linked.
And the app should indicate to the user that the app is waiting for another button to be pushed, after the first one is clicked.

Based on these, here is a sample application:

methods (Access = private)
    % Code that executes after component creation
    function SettingUpFlag(app)
        app.Btn1PushedFlag = 0;
    end
    % Button pushed function: Button1
    function Btn1Pushed(app, event)
        app.Btn1PushedFlag = 1;
        app.MessageEditField.Value = "Waiting for other button to be pushed";
        app.ButtonPressedEditField.Value = "";
    end
    % Button pushed function: Button2
    function Btn2Pushed(app, event)
        if app.Btn1PushedFlag == 1
            app.ButtonPressedEditField.Value = "Button2 is pushed";
            app.MessageEditField.Value = "";
            app.Btn1PushedFlag = 0;
        else
            app.ButtonPressedEditField.Value = "";
        end
    end
    % Button pushed function: Button3
    function Btn3Pushed(app, event)
        if app.Btn1PushedFlag == 1
            app.ButtonPressedEditField.Value = "Button3 is pushed";
            app.MessageEditField.Value = "";
            app.Btn1PushedFlag = 0;
        else
            app.ButtonPressedEditField.Value = "";
        end
    end
end