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How can I change the icon of my AppDesigner-produced GUIs?

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Micke Malmström
Micke Malmström on 19 Mar 2018
Edited: Cris LaPierre on 29 Oct 2020 at 13:59
I would like to easily distinguage my GUI from the figures when pressing Alt+Tab so I can access it faster. Now when I run the GUIs they have the same icon as a regular figure...

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Marc McLean
Marc McLean on 19 Apr 2019
How do you change the icon in the upper left of the .mlappp GUI launched from AppDesigner?
icon.jpg

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Answers (3)

Cris LaPierre
Cris LaPierre on 20 Apr 2019
Edited: Cris LaPierre on 29 Oct 2020 at 13:59
R2020b update: See this answer.

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Micke Malmström
Micke Malmström on 5 Mar 2020
Note that I dont want to change the icon of the Matlab application (which "this answer" says you cant and which is understandable). I only want to change the icon of one particular figure window, so that I can find it easily when I have >25 figures open at the same time.

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Robert
Robert on 29 Oct 2020 at 13:54
Add this to your startupFcn:
t = 0;
tMax = 5;
dt = 0.1;
while ~isfield(struct(struct(app.UIFigure).Controller), 'PlatformHost') && t < tMax
% Keep waiting until the window is found.
t = t + dt;
pause(dt)
end
win = struct(struct(struct(app.UIFigure).Controller).PlatformHost).CEF;
win.Icon = 'C:\Folder\MyIcon.ico';
Of course, you may have renamed the UIFIgure property of your app.
In R2016b and older, replace 'PlatformHost' with 'Container'.

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Cris LaPierre
Cris LaPierre on 29 Oct 2020 at 13:58
Starting with R2020b, you can now specify custom icons for UI figure windows and toolbar push and toggle tools. See the release notes here.

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