pan cancels WindowKeyPressFcn callback...

Question

Razvan 2012-5-10

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/38011-pan-cancels-windowkeypressfcn-callback

编辑： Chella 2014-7-24

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

Hi,

I noticed that after using the pan function, WindowKeyPressFcn callback doesn't work anymore...

Example:

function someFunction
  Fig = figure('WindowKeyPressFcn', @buttonPressed_Callback);
  plot(rand(1,10))
  pan on
    function buttonPressed_Callback(handle, event)
      key = event.Key
    end
end

How can I reactivate the WindowKeyPressFcn callback after the pan command?

Thanks,

Razvan

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Answer 1

Walter Roberson 2012-5-10

0
链接

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https://ww2.mathworks.cn/matlabcentral/answers/38011-pan-cancels-windowkeypressfcn-callback#answer_47436

You are correct, pan does have that effect. Please see http://www.mathworks.com/matlabcentral/answers/30563-pan-mode-control-via-keyboard

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Walter Roberson 2012-5-10

1) *First* turn on pan.

2) Then turn off the listeners as shown at https://groups.google.com/group/comp.soft-sys.matlab/msg/db42cf51392b442a

3) Then set() your desired function as the WindowKeyPress callback.

4) When it is time to turn pan off, reverse the order: set() the WindowKeyPress callback to what it would normally be, then re-enable the listeners, then turn pan off.

addlistener() is not involved in this process: you need to disable the listeners instead as the listeners are blocking you from adding your own WindowKeyPress callback.

Chella 2014-7-23

编辑：Chella 2014-7-24

I know this is an old thread but it helped me out. In addition to step 3) I also have to set KeyPressFcn = [] to avoid keystrokes getting back to Matlab command window.

Thanks

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