How can I change the title bar icon of my app?

In license agreement it is said:

3.1. MATLAB Compiler

vi) You may not modify or remove any proprietary notices included with Programs or Program Components. However, you are permitted to remove the MathWorks logo icon within the figure title bar of your Application and replace it with a different icon.

But how can I do that? There is an option in the compiler to add an icon, but when the app is opened, the Mathworks logo is displayed.

I am using App Designer, so the javaframe option is not available.

[Joris Lambrecht]

+1 for the importance of this. It seems the license agreement has changed and we are now allowed to change the icon, so a lot of older posts on this forum are no longer accurate. But like Isaac says, how!?

I also want to change the icon in the top left of figure AND the icon used on the Windows Taskbar so the compiled app doesn't show up in my group of open Matlab windows. I tried using a resource editor (ResourceHacker and ResourceTuner) to change the icons. The installer in the "for_redistribution" folder did not contain any Matlab icons, only the custom icon that can be added using the Application CompilerWith ResourceTuner. With Resource Tuner, however, I was able to replace all the Matlab icons in the .exe from "for_redistribution_files_only" folder with my custom icon. But when I ran the .exe it still shows the Matlab icon! I assume the icon is therefore coming from the MCR, and I think it would be against the license agreement to modify the MCR.

[PierreC]

+1 as well ... This is pretty annoying, especially when you'd want to use different icons for different app windows (in order to identify them quickly).

Answer 1

[Isaac Marín]

I have found this solution, it works with uifigures

https://www.mathworks.com/matlabcentral/answers/480115-deprecated-javacomponent-and-javaframe#answer_400110

[Ajay Kumar]

The thread is too confusing. Did you find the exact answer? if yes whose answer is it?

Or by your conclusion, can we change the icon or not?

[Isaac Marín]

Is the aswer referenced in the link, it uses a custom function called "getWebWindowOfUiFigure", and it works to change the icon.

Answer 2

[Cris LaPierre]

Starting with R2020b, there is now an icon property. You can use it to "specify custom icons for UI figure windows and toolbar push and toggle tools". You can see more under "App Building" in the release notes for R2020b.

To specify a custom icon, set the Icon property value to an image file or an m-by-n-by-3 truecolor array. See here in the UIFigure Properties.

Answer 3

[Ganesh Regoti]

You can refer to following link

https://www.mathworks.com/matlabcentral/answers/389213-how-can-i-change-the-icon-of-my-appdesigner-produced-guis

[Isaac Marín]

The link doesn't have a solution for this problem, i'm using MATLAB compiler R2019b

Answer 4

[Bereketab Gulai]

Here is the real solution R2019b and above:

hUIFig = uifigure; % allow this to load first (run it separately from the below code)

% Find the CEF window for the running app's figure: this idea
% comes from DesktopFigureService MALTAB internal class (courtesy)
cefWindowList = matlab.internal.webwindowmanager.instance.windowList;
url = matlab.ui.internal.FigureServices.getFigureURL(hUIFig);
[idx] = arrayfun(@(ww)strcmp(url,ww.URL), cefWindowList);
hWin = cefWindowList(idx);
hWin.Icon = which('your-icon.ico'); % must be ico file 

[Joris Lambrecht]

Thanks Bereketab Gulai !

I made a few changes specific to AppDesigner and deploying the solution with Application Compiler. I put this in my startup function:

app.UIFigure.Visible = 'off'; % hide figure while Icon is still old icon
drawnow %It seems we need to pause execution here otherwise cefWindowList won't have the UIFigure in it yet

% Find the CEF window for the running app's figure: this idea
% comes from DesktopFigureService MALTAB internal class (courtesy)
cefWindowList = matlab.internal.webwindowmanager.instance.windowList;
url = matlab.ui.internal.FigureServices.getFigureURL(app.UIFigure);
[idx] = arrayfun(@(ww)strcmp(url,ww.URL), cefWindowList);
hWin = cefWindowList(idx);
if isdeployed % Executable in stand-alone mode.
    % Make sure to add the ICO file to the files "Files installed for end user"
    % in the Application Compiler
    [~, result] = system('path');
    exedir = char(regexpi(result, 'Path=(.*?);', 'tokens', 'once'));
    hWin.Icon = fullfile(exedir, 'myIcon.ico');
else
    hWin.Icon = which('myIcon.ico');
end

app.UIFigure.Visible = 'on';

Unfortunately, Windows still clusters the App along with other Matlab 2019b windows, even when deployed.

[Bereketab Gulai]

Joris Lambrecht,

Even when the app is deployed you can use

which('myIcon.ico');

making sure that the icon is included in the resources list in the compiler.

• I did not understand about the "Windows still clusters the App along with other Matlab 2019b windows, even when deployed. ". It would be good to see a picture or illustration, more description.
• Do you mean the windows on the taskbar show under the other RUNNING MATLAB APPs? If so, probably there is no solution to this, probably MATLAB apps of the same version (R2019b...) probably have something in common while running, thus windows groups as so. You could post a question about that in case some experts have a solution.