Index value for button group

Question

Ye Ken Kok 2022-5-22

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1724585-index-value-for-button-group

评论： Walter Roberson 2022-5-22

I have a button group with 2 choices, being Low Pass and High Pass. I want to write the callback function for a button such that when I click on the button, it checks the selection of the button group. I tried to use this but it does not work and says unrecognised function or variable 'value'

% Button pushed function: STARTButton
        function STARTButtonPushed(app, event)
            selection = app.FilterTypeButtonGroup.SelectedObject;
            if selection == 'Low Pass'
                value = 1;
            elseif selection == 'High Pass'
                value = 2;
            end
            app.SelectionEditField.Value = value;
        end

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Answer 1

Walter Roberson 2022-5-22

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1724585-index-value-for-button-group#answer_969055

https://www.mathworks.com/help/matlab/ref/uibuttongroup.html#mw_64460ebb-84cc-4b21-8e3c-1da7ae15c44d

SelectedObject for a uibuttongroup is the handle of the button, not its label.

A button group is not a single object that happens to display multiple buttons. A button group is a collection of buttons, each of which can have its own behavior and label and position controls and whatever.