gca behaves different in 2014b

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Christian Schultes
Christian Schultes 2014-10-12
评论： Christian Schultes 2014-10-12
Hello, Let assume there is already a figure open (like a GUI). Before 2014b with gca the handle number returned. Now with gca a new figure will open.
How could I get the current handle of a figure back?
In my special case, I try to get access to a certain axes of an existing figure. Any help avialable?
Thanks!
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Christian Schultes
Christian Schultes 2014-10-12
It works so fine in prior releases, but in 2014b the results as shown:
>> isempty(get(groot,'CurrentFigure'))
ans =
1
>>
Christian Schultes
Christian Schultes 2014-10-12
I've got the answer. The settings of the GUI must be HandleVisibility = ON !!!

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采纳的回答

Christian Schultes
Christian Schultes 2014-10-12
Always t
urn the HandleVisibility ON then the commands gca and gcf will work.

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David Barry
David Barry 2014-10-12
Christian,
This seems to work fine. Are you sure you definitely have an axes in your figure? gca will only open a new figure with an axes in if you call it and one doesn't already exist.
Try the code below and see if returns 1
f = figure;
a = axes('Parent', f);
g = gca;
a == g
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Christian Schultes
Christian Schultes 2014-10-12
Hello David.
Yes I'm sure. But now I found the issue! Not sure why it did work in R2011b. See my own answer.

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