Setting KeyPressFcn on current figure

2012 2 10
2 个回答
6 次查看（30 天）

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Hi all,
I have defined a KeyPressFcn (or WindowKeyPressFcn) for a figure. Now I want to keep that callback active while another figure has focus. Is this possible? Figure callbacks seem not to work on current figures but on focused figures. Can I change that, or is there some other solution?
Thanks!
Jaap

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回答（2 个）

Sean de Wolski
Sean de Wolski 2012-2-10

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No, the figure with the callback has to have focus. You could have a new figure take over with the keypressfcn while it's active perhaps. We'd need more detail to help you with a solution.
Jaap
Jaap 2012-2-13

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Thank you. This spares me from continuing that search.
My main window is a scatterplot. The user can select a point, and create a plot showing characteristics of that point. On the main window, arrow keys can move a selected point. I want that behaviour being reflected in both (figure) windows.
Could you reflect a bit on "having a new figure take over with the keypressfcn while it's active"?

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Sean de Wolski
Sean de Wolski 2012-2-13
So the callback (keypressfcn) on the scatterplot that opens the new figure should pass it information with the handle to that point, the figure/axes handles and any other information it might need. Then it sets the keypressfcn of the new figure to do what you want (I would keep this callback in a standalone *.m file). The behavior that you want is completely feasible.
I hope this helps. Post more information if you want more detail.

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Jaap
Jaap
2012-2-10

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