How to change the Background for GUI

i made the image as background for GUI,???? but i want to add button when i will press it will change the background to another image ??? how

ah = axes('unit', 'normalized', 'position', [0 0 1 1]); 
% import the background image and show it on the axes
bg = imread('work/bg_red.jpg'); imagesc(bg);
% prevent plotting over the background and turn the axis off
set(ah,'handlevisibility','off','visible','off')
% making sure the background is behind all the other uicontrols
uistack(ah, 'bottom');

Answer 1

[Geoff Hayes]

Mohammed - it looks like you have used some of the code from https://www.mathworks.com/matlabcentral/answers/96023-how-do-i-add-a-background-image-to-my-gui-or-figure-window, so we can extend this to do the following

 function GUIBackgroundExample
    hFig = figure;
    hAxes = axes('Units','normalized','Position',[0 0 1 1]);
    uistack(hAxes,'Bottom');
    img  = imread('myImage1.jpg');
    hImg = image(img, 'Parent', hAxes);
    set(hAxes,'HandleVisibility','off', 'Visible','off')

    hBtn = uicontrol(hFig,'Style','pushbutton','String','Change BG',...
                    'Units', 'normalized', 'Position',[0.0 0.0 0.2 0.05], ...
                    'Callback', @ChangeBackgroundCallback);

    function ChangeBackgroundCallback(hObject, eventdata)
        if ~isempty(hImg)
            delete(hImg);
        end
        img = imread('myImage2.jpg');
        hImg = image(img, 'Parent', hAxes);
    end
 end

Like your code, we create the figure with the axes and load an image. We then create a pushbutton in the lower left corner with a callback function that will delete the existing image (graphics object), read the new one, and then display it in the current axes.

Try the above and see what happens!

[MOHAMMED AL-DALLAL]

Thank you very much