Cannot Change UIFigure (App) Size Programmatically In 2022a

I decided to upgrade my app designer GUI from 2019b to 2022a, but my app does not function correctly in 2022a.

I have a class for my apps that contains different layouts for each app state.

In one function I have following lines of code.

function fooLayout(app, imSize)
%Code calculating new Figure Height was removed. 
app.UIFigure.Position(4) =newFigureHeight;
app.UIFigure.Position(3) = 1000+30+340;
end

In 2019b the figure changes size in 2022a the uifigure/ app does not change size. What am I doing wrong?

Other notes;

• Everything works correctly in 2019b.
• If I put a drawnow after the code the figure size still does not change.
• In 2022a the figure changes size if I put a break point before the code and step through each line.
• In 2022a the figure changes size if I put a break point before the code and press continue.
• In 2022a the figure changes size if put put a break point after the code. and press continue.

Answer 1

[Kevin Holly]

ILoveMATLAB,

I could not replicate your issue. I created an app in R2019b that change the size of UIFigure and then converted it in R2022a (see apps attached).

In your app, is newFigureHeight derived from imSize?

function fooLayout(app, imSize)
%Code calculating new Figure Height was removed. 
app.UIFigure.Position(4) =newFigureHeight;
app.UIFigure.Position(3) = 1000+30+340;
end

[ILoveMATLAB]

Yes the new figure height is dervied from imSize.

I think I found the source of the issue. I will reply with details later today or early tommorow.

[ILoveMATLAB]

I started removing different lines of code to determine what overwrites the change.

When I removed the movegui(app.UIFigure,'center'), fooLayout worked in 2022a. The only problem is that my app is no longer centered. I thought this statement was trivial, so I did not include it in the original post.

function fooLayout(app, imSize)
%Code calculating new Figure Height was removed. 
app.UIFigure.Position(4) =newFigureHeight;
app.UIFigure.Position(3) = 1000+30+340;
 movegui(app.UIFigure,'center');%Why does this overwrite the change.
end

[Kevin Holly]

You can add the following:

            app.UIFigure.Units = 'normalized';
            app.UIFigure.Position(1) = (1-app.UIFigure.Position(3))/2;
            app.UIFigure.Position(2) = (1-app.UIFigure.Position(4))/2;
            app.UIFigure.Units = 'pixels';

See app attached.

Edit: The following command works for me too.

            movegui(app.UIFigure,'center')

[ILoveMATLAB]

The expanded version of code worked in 2022a.