Thread Subject: WindowKeyPressFcn not working in zoom/pan mode

Hi everyone,
I am working on a GUI that registers whenever the user presses the left-arrow key or right-arrow key using WindowKeyPressFcn. If the GUI is in zoom or pan mode, however, it doesn't register the key presses anymore. I tried using the ButtonDownFilter zoom/pan callback, but this doesn't seem to work. Any suggestions would be greatly appreciated.
Thanks,
Emma

"Emma " <etm1@fuse.net> wrote in message <hlkk6c$go9$1@fred.mathworks.com>...
> Hi everyone,
> I am working on a GUI that registers whenever the user presses the left-arrow key or right-arrow key using WindowKeyPressFcn. If the GUI is in zoom or pan mode, however, it doesn't register the key presses anymore. I tried using the ButtonDownFilter zoom/pan callback, but this doesn't seem to work. Any suggestions would be greatly appreciated.
> Thanks,
> Emma

Hi Emma,

The uimodemanager turns off most of your windows callbacks when you go into modes like pan and zoom

You should be able to do this by directly creating a listener.

If you run the function below you should still be able to listen for keystrokes even when in zoom mode.

function keyListenerDemo

%set up a figure
h = figure;
plot(sin(0:0.1:2*pi));

addlistener(h,'WindowKeyPress',@keyPress);

    function keyPress(src,evtData)
        key = get(src,'CurrentCharacter');
        switch key
            case ','
                disp('Left Arrow')
                
            case '.'
                disp('Right Arrow')
        end %switch
    end %keyPress

end %keyListenerDemo

hope this helps
Matt W

Hi Matt,
Thank you so much for your answer. Addlistener seems to work really well, except for some weird characteristics that I can't figure out:
- Why does addlistener(gcf,'WindowKeyPress',@keyPress) work but not addlistener(gcf,'WindowKeyPressFcn',@keyPress)? I would think that the latter would work just as well as the former, since WindowKeyPressFcn is a figure property.
- Why does addlistener not let me pass handles? ie., addlistener(gcf,'WindowKeyPress',{@keyPress,handles}) throws an error.
Thank you so much for your help.
Emma

"Emma " <etm1@fuse.net> wrote in message <hlkv5f$kfn$1@fred.mathworks.com>...
> Hi Matt,
> Thank you so much for your answer. Addlistener seems to work really well, except for some weird characteristics that I can't figure out:
> - Why does addlistener(gcf,'WindowKeyPress',@keyPress) work but not addlistener(gcf,'WindowKeyPressFcn',@keyPress)? I would think that the latter would work just as well as the former, since WindowKeyPressFcn is a figure property.
> - Why does addlistener not let me pass handles? ie., addlistener(gcf,'WindowKeyPress',{@keyPress,handles}) throws an error.
> Thank you so much for your help.
> Emma

HI Emma,
On the why addlistener(gcf,'WindowKeyPressFcn',@keyPress) does not work is that you have to pass addlistener the event name not the property. Internally 'WindowKeyPress' is the event that 'WindowKeyPressFcn' is listening for.

I will have to take a quick look at the 2nd part of your question.

Some docs for addlistener can be found by typing doc addlistener

Matt W