How do I replace the sting value in one popup based on the value selected in another popup?

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Abhay Aradhya 2017-6-12

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/344327-how-do-i-replace-the-sting-value-in-one-popup-based-on-the-value-selected-in-another-popup

评论： Walter Roberson 2017-6-12

    popupMenu = uicontrol(topPanel,'Style','popupmenu',...
                'String',solString,...
                'Units','normalized',...
                'Value',1,'Position',[.1 .25 .2 .5],...
                'Callback',@popupmenuCallBack);
    hourpopupMenu = uicontrol(topPanel,'Style','popupmenu',...
                'String',hourString,...
                'Units','normalized',...
                'Value',1,'Position',[.5 .25 .2 .5],...
                'Callback',@hourpopupmenuCallBack);
    function hourpopupmenuCallBack(hObject, eventdata, handles)
        global sol_index_selected
        global hour_index_selected
        global solution_index
        global allData
        hour_index_selected = get(hObject,'Value');
        % to generate new string
        newSolString = [];
        for n=1:size(allData.all_data(hour_index_selected).solutions,1)
            newSolString = [newSolString string("Solution "+n)];
        end
        % NEED TO REPLACE STRING OF "popupmenu" WITH "newSolString"
     end
     % callback function for dropdown/popup menu in the top panel
     function popupmenuCallBack(hObject, eventdata, handles)
         global sol_index_selected
         sol_index_selected = get(hObject,'Value');
     end

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Answer 1

Walter Roberson 2017-6-12

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/344327-how-do-i-replace-the-sting-value-in-one-popup-based-on-the-value-selected-in-another-popup#answer_270405

在 MATLAB Online 中打开

Change

    popupMenu = uicontrol(topPanel,'Style','popupmenu',...
                'String',solString,...
                'Units','normalized',...
                'Value',1,'Position',[.1 .25 .2 .5],...
                'Callback',@popupmenuCallBack);

to

    popupMenu = uicontrol(topPanel,'Style','popupmenu',...
                'String',solString,...
                'Units','normalized',...
                'Value',1,'Position',[.1 .25 .2 .5],...
                'Callback',@popupmenuCallBack, ...
                'tag', 'Pup');

Replace

        newSolString = [];
        for n=1:size(allData.all_data(hour_index_selected).solutions,1)
            newSolString = [newSolString string("Solution "+n)];
        end

with

       newSolString = 'Solution " + (1:size(allData.all_data(hour_index_selected).solutions,1));
       popupmenu = findobj(ancestor(hObject, 'figure'), 'tag', 'Pup');
       popupmenu.String = newSolString;

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Abhay Aradhya 2017-6-12

@Walter

Thank you for the answer. Just inquisitive, can we pass some parameters along with the above callback function? And how do we access the same..

If yes can you please state an example for the same.

Walter Roberson 2017-6-12

See https://www.mathworks.com/help/matlab/creating_guis/write-callbacks-using-the-programmatic-workflow.html#brqow8p

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How do I replace the sting value in one popup based on the value selected in another popup?

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How do I replace the sting value in one popup based on the value selected in another popup?

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