How to disable close button on figure

Question

I want to disable close button of figure in Matlab. How can I do that?

Answer 1

Seems like you have to override the CloseRequestFcn event handler, see here. You can't hide or disable the close button, but you can ensure that user clicking on it won't have any effect.

Answer 2

With this you can disable all:

set( findall(handles.your_uipanel, '-property', 'Enable'), 'Enable', 'off')

but to only disable the close one:

function closeRequestDemo
    figHdl = dialog('Name','Close Request Demo',...
                    'CloseRequestFcn',@cmdClose_Callback);...dialog creates a nice stripped down figure

    uicontrol('Parent',figHdl,...
              'String','Close',...
              'Callback',@cmdClose_Callback);


    function cmdClose_Callback(hObject,varargin)
        disp(['Close Request coming from: ',get(hObject,'Type')]);

        %do cleanup here
        delete(figHdl);

    end %cmdClose_Callback
end %closeRequestDemo

Sources here https://www.mathworks.com/matlabcentral/newsreader/view_thread/290049

another way is:

% Get all the handles to everything we want to set in a single array.
handleArray = [handles.editText, handles.pushbutton, handles.listbox];
% Set them all disabled.
set(handlesArray, 'Enable', 'off');

Answer 3

You can replace its function by typing:

set(fig_obj,'CloseRequestFcn','code to execute')

on my example I replace it by:

set(fig_obj,'CloseRequestFcn','set(fig_obj,"Visible","off");');

You can find more about here:

https://www.mathworks.com/help/matlab/ref/matlab.ui.figure-properties.html#buiwuyk-1-CloseRequestFcn