Detecting which mouse button is pressed in a UIFigureWindowButtonDown callback

Andrei Veldman

2019 10 23

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In App Designer, how how can I detect which mouse button (Left, Right, Middle) was pressed in a UIFigureWindowButtonDownUIFigureWindowButtonDown callback?

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Andrei Veldman 2019-10-23

Thanks Shubham, the answer your link points to works just fine!

I've done before what that answer suggests for regular figures (created in guide), but I thought that MathWorks may have changed teh way it works for UIFigure , perhaps passing the button information in the event input, which would be teh natural way, I think.

If I knew how to accept your comment as the correct answer, I would. Perhaps that's only possible for answers, not comments.

Alexander Melin 2022-7-19

在 MATLAB Online 中打开

The newer (possibly more elegant) solution uses the event information. Using the UIFigure UIFigureWindowButtonDown callback, the event object passed to the callback has information on the source of the event (mouse click), in this case the UIFigure. Then you can directly access the SelectionType property. For example

% Window button down function: UIFigure
function UIFigureWindowButtonDown(app, event)
    switch event.Source.SelectionType
        case 'normal'
            % Do left button stuff
        case 'alt'
            % Do right button stuff
        case 'extend'
            % Do center button stuff
    end
end