How to keep Matlab from stealing focus

I do a lot long running scripts that plot to multiple figure. While these scripts are running, I am unable to use my computer because Matlab steals focus so I can't do anything else while the script is running. It there a way to keep the plot function from stealing focus?

[Joseph Becker]

And it is also the case that the main window can not be closed (for more than a few seconds) because anytime anything in the main window is updated it steals focus. This is totally wrong. Can't use computer when running long jobs.

[Walter Roberson]

because anytime anything in the main window is updated it steals focus.

That is not accurate in MATLAB. In MATLAB, focus can be stolen when the code executes figure() or uifigure(), or explicitly makes a figure visible.

Functions such as msgbox() use figure() and so focus can be stolen by executing them because of the figure() call.

Focus can be stolen by the command window in some cases of typing.

Focus is not stolen by plotting routines other than figure() or uifigure() . However, if a plotting routine is called at a time when there is no current figure, then one will be created to contain the graphics and that will steal focus in doing so.

For the most reliable graphics, always parent your graphics; see https://www.mathworks.com/matlabcentral/answers/317181-non-deterministic-behavior-with-multiple-figures#answer_247493

[Huub Bakker]

I am using Matlab 2022a on an Apple Silicon Mac.

In my case, I have created a figure once and use it to replot and then print each figure to a png file. The Visible property of the figure is set to 'off' and nothing is printed to the main window.

Matlab still steals the focus when the figure run the print command. This is also true if using the exportgraphics command.

The only way I have found to stop this is to create a standalone application which I run from a Unix terminal.

Answer 1

[Ameer Hamza]

You can set the Visible property of figure handles as 'off'. It will prevent them from stealing focus.

f = figure('Visible', 'off');

at the end, when you want to see it

f.Visible = 'on'; % or set(f, 'Visible', 'on');

[Ameer Hamza]

@John Signorotti answer moved here:

"Ameer, Thanks for the reply. This solution would be fine if I didn't need to visualize the data while the process is running. If I do want to see the plot, is there another solution to keeping the plots from stealing focus? I will certainly try your solution.

Thanks again John"

[Ameer Hamza]

figure window will only steal focus if a new window is created. Are you creating several figure windows?

[John Signorotti]

I'm not sure I understand what you mean by "near window". I have to process many hundred of data files and review the plots periodically. Typically I have 6-8 figures open, plot different types of data on each, then reuse the same figures for subsequent iterations. I don't close them and then create new ones.

[Ameer Hamza]

Sorry! I meant to say "new window". If you just have 6-8 figures then after creation, the subsequent call to plot() or other graphics function on those figure window should not steal the focus. Here is a simple example,

• first run these lines to create figures, axes and obtain their handle. this process will steal focus.

f1 = figure;
f2 = figure;
ax1 = axes(f1);
ax2 = axes(f2);
hold(ax1)
hold(ax2)

• Now call following plotting command, they will run without stealing focus, in the background.

plot(ax1, 1:10)
plot(ax1, (1:10).^2)

plot(ax2, sin(1:10))
plot(ax2, sin(1:10).^2)

[John Signorotti]

I create all the figure on the first iteration through my script, which is running in a loop over the number of files I have to process. So yes I am creating figures, but only once. After that, I use the same figures for subsequent iteration. But every time something gets plotted, the figure steals focus.

[Ameer Hamza]

are you calling figure() like this in your code

figure(1) % or figure(f1)

this will also cause the figure to focus

[John Signorotti]

I think I may have found the issue. I use the figure(N), where N is the figure number, prior to plotting the data. Because I plot data from different functions, figures from one function are out of scope when I plot from a different function? So I suppose I need to create the figures as you describe above and make those object global. I believe this is what is stealing focus.

[John Signorotti]

Yep, that is the issue then. Thanks so much. I'll have to try making the figure variable global so I don't have to call figure()

[Ameer Hamza]

You are welcome.

[Gergo Motyovszki]

But this fully represses the figure from appearing. In my earlier matlab versions it was possible to have the figure appearing, but not stealing focus from non-Matlab windows. E.g. I run a long loop and a figure shows me at the end of each iteration how things stand, which I can see on one screen, while I am able to type a document on the other screen from which the focus is not stolen by the new figure appearing in Matlab. How to do this? I guess it is not a command but must be somewhere in the settings.

[Dan]

This is certainly not an acceptable answer ... MATLAB should not be stealing Windows Focus ... period.

Windows has a very nice feature that other apps use which lights up the icon on the taskbar when something happens that the user might be interested in. MATLAB should use this feature to notify that there is a new figure.

I don't care to add a parameter to all my code which is conditionally setting the visibility property when I don't want focus stolen. FWIW, I'm submitting a bug report.

Here is more discussion on the topic: https://ux.stackexchange.com/questions/51795/why-is-it-an-industry-standard-to-have-a-window-automatically-grab-focus-and-how

[Anthony Herdman]

I too want to work on one screen editing my scripts while analysis plots are coming up on another screen but the figures keep stealing the focus and I need to keep cliking back in the editor window.

Does anyone have a solution to this problem?

[Ameer Hamza]

Can you show your code?

[Walter Roberson]

The technique that is available is to create all of the figures at the beginning, setting their visibility off. After that, do not figure() them to make them active: at most set(groot, 'CurrentFigure', ...) and better yet, only refer to them without activating them, such as ax = axes('Parent', fig(1)); plot(ax, rand(1,5));

The focus stealing would be restricted to a short period.

However, there are some cases where MATLAB does not recalculate some properties until the container is made visible, and in some cases that can end up requiring that the figure be made visible in order to trigger the recalculations. Unfortunately that can steal focus.

Answer 2

[Aastav Sen]

This works for me (adding data to a plot within a loop without having Matlab steal the focus so I can work on other things at the same time)! So in a nutshell:

Call before your loop:

fg = figure(1)

But during your loop when you want to update the contents of a figure this requires you to 'grab' the figure and set it to your current figure handle = 'gcf'. You do this using:

set(0,'CurrentFigure',fg);

Note: that if you instead used in your loop:

fg = figure(1)

This would set the 'gcf' to our figure (what we want), but, would also steal the focus (what we don't want)!

Hope this helps.

[Dale Fried]

Thanks!

I like your approach because the figures are visble and updated, so I can see them while I am working elsewhere on my screen, and monitor progress. But focus is not stolen.

In short, before the loop, call "fh = figure(1)". Then, in the loop replace "fh = figure(1)" with "set(0,'CurrentFigure', fh)"

[Walter Roberson]

... As discussed a few months before that, https://www.mathworks.com/matlabcentral/answers/398905-how-to-keep-matlab-from-stealing-focus#comment_920062