A appdesigner menu question

• How to increase the number of levels below the menu bar in appdesigner？
• fig(1)
• fig(2)
• i create the “Menu”——fig（1），But it didn't show up the “app.Menu_8” in the fig(2)?

Answer 1

[Shubham]

Hi @ni,

To increase submenu levels in App Designer, ensure each menu item is a child of its parent menu.

Here's how this can be done:

1. Add a Main Menu: In the Component Browser, right-click on the figure and select "Add Menu."
2. Add Submenus: Right-click on the main menu and select "Add Menu" to create submenus. Repeat for additional levels.
3. Ensure Proper Hierarchy: Assign each submenu as a child of the menu directly above it.

Here is an example of a MATLAB App Designer script that implements a multi-level menu bar:

classdef MyApp < matlab.apps.AppBase

    properties (Access = public)
        UIFigure  matlab.ui.Figure
        MainMenu  matlab.ui.container.Menu
        SubMenu1  matlab.ui.container.Menu
        SubMenu2  matlab.ui.container.Menu
        SubSubMenu1 matlab.ui.container.Menu
    end

    methods (Access = private)

        function createComponents(app)
            app.UIFigure = uifigure('Visible', 'off');
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'My App';

            app.MainMenu = uimenu(app.UIFigure);
            app.MainMenu.Text = 'Main Menu';

            app.SubMenu1 = uimenu(app.MainMenu);
            app.SubMenu1.Text = 'SubMenu 1';

            app.SubMenu2 = uimenu(app.MainMenu);
            app.SubMenu2.Text = 'SubMenu 2';

            app.SubSubMenu1 = uimenu(app.SubMenu1);
            app.SubSubMenu1.Text = 'SubSubMenu 1';

            app.UIFigure.Visible = 'on';
        end
    end

    methods (Access = public)

        function app = MyApp
            createComponents(app)
            registerApp(app, app.UIFigure)
            if nargout == 0
                clear app
            end
        end

        function delete(app)
            delete(app.UIFigure)
        end
    end
end

Please note that there is no limit to menu depth in App Designer. Ensuring each submenu is linked correctly to its parent will help manage multi-level menus effectively.

For more information on “uimenu”, refer to the following MathWorks documentation link:

https://mathworks.com/help/releases/R2023a/matlab/ref/uimenu.html

Hope this helps!