How to get groot before R2014b?

I am working on a GUI program. groot was used in the scripts.

However, when applying it I found some old computers installed older version of Matlab, which made the GUI down.

I was thinking of define a variable groot to make the GUI working if matlab version was older than R2014b, by verLessThan.

How should I do it?

[Star Strider]

If I remember correctly, prior to R2014b, the default setting was 0.

Setting:

groot = 0;

may work.

[Albert Bing]

Tried in a newer matlab, it didn't work.

h = figure();
uicontrol(0, 'style','text', 'String','text', 'position',[10,10,30,20]);

I might try it in older machine next week since I don't have that now.

Thanks anyway.

[Star Strider]

I doubt if it would work in R2014b and later releases.

I believe it is only used to set the default properties, as is groot. (I have not needed to do that in a long time.)

[Steven Lord]

I don't think that specific uicontrol command should work in any MATLAB release. uicontrol objects can't be parented to the root graphics object. The error message I receive in release R2019b should probably be similar to the one you received in the older release:

"Parent must be a Figure or UITab or any UIContainer"

Change that 0 to h, the figure you created on the previous line.

[Walter Roberson]

Sometimes groot is useful to provide a starting point for findall or findobj especially with a -depth argument (the starting point is not formally defined if you omit the object reference.)

[Albert Bing]

Reply to @Steven Lord's comment, I used uicontrol(0, ...) just to replace groot to 0.