create a tab which appear before closing the GUI

How to create a tab which appear when i close the GUI to ask whether i want to export if i have not done and if its done its just close?

Answer 1

[Jiri Hajek]

You have to create a UIFigureCloseRequest callback, which is easily done in AppDesigner by a right click on the app.UIFigure in Component Browser.

Then, in the callback, use a.uiconfirm functiion, which gives two alternative answers (OK or Cancel). In an if-else block, you can manage the options you need do perform. You can close the app by the command delete(app).

[PA]

How can i create a UIfigureCLose request callback in GUI without Appdesigner through programm

[Jiri Hajek]

This is not a way I'd recommend and if you have access to a recent release of MATLAB, AppDesigner is definitely the way to go...

It is possible to do programmatically, but you have to study the documentation in more depth. You may find the details here: https://www.mathworks.com/help/matlab/creating_guis/write-callbacks-for-apps-created-programmatically.html...

[PA]

Thank you

[PA]

how to create a check variable inside theclosed figure call back function :1 if its save, 0 if save not done

[PA]

 selection = uiconfirm(app.UIFigure, 'Do you really want to close the Project without Saving?',...
                     ' Close Request','Options',{'Save','Donot Save','Cancel'});
          
                     switch selection
                         case'Save'
                             if x ==1
                                 x= save is done;
                             elseif x==0
                                 x = save is not done
                            delete (app)
                            case'Cancel'
                                 return
                     end
            end

Answer 2

[Allen]

@PA, I typically use something similar to the following.

qstr = "Do you really want to close the Project without Saving?";
qans = uiconfirm(app.UIFigure,qstr,"Close Request", ...
    "Options",["Save","Don't Save","Cancel"], ...
    "DefaultOption",1,"CancelOption",3);
if strcmp(qans,"Canel")
    return
elseif strcmp(qans,"Save")
    % I typically have a save function assign to a push button callback
    % within my App and call it directly from here.
    SaveButtonPushed(app,event)
    
    % You can also directly insert any save functions that work for your
    % data type.
    %     save(...)
end
delete(app)