WindowKeyPressFcn removes focus from figure when multiple figures are open

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Stephan Heise 2016-3-18

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https://ww2.mathworks.cn/matlabcentral/answers/274197-windowkeypressfcn-removes-focus-from-figure-when-multiple-figures-are-open

评论： Jan 2016-3-19

Hi,

I wrote a function for stepping through individual plot lines within an axes using the arrow keys, which I then place in the figure's WindowKeyPressFcn (a bit similar to what was done here: http://de.mathworks.com/matlabcentral/answers/100024-how-can-i-use-up-and-down-arrow-keys-to-scroll-through-my-plots-in-matlab-7-7-r2008b). It works as long as only one figure is open that uses this functionality. As soon as I open a second figure which has the same WindowKeyPressFcn, multiple key presses don't work because the focus seems to the lost after a key press. So I have to do the key press, click the figure to regain focus, key-press, click, ... which isn't really comfortable.

Does anyone know what's happening there and how I could prevent the focus-losing? Thanks in advance for any help!

Stephan.