How to set shortcuts for zoom tool in my own GUI?

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Albert Bing 2020-1-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/502005-how-to-set-shortcuts-for-zoom-tool-in-my-own-gui

评论： Albert Bing 2020-1-28

I wrote a GUI in which the zoom tool was frequently used, so I wanted to give it a shortcut. I wrote the figure's KeyPressFcn as follows, but it didn't work.

Q1. The "Ctrl+0" means zoom out, and it worked just fine. But "Ctrl+E" to zoom on just didn't work. How should I wrote the function `zoomKeys`?

Q2. I wanted to use "ctrl+=", but it was used by the editor to zip the codes. Can I still somehow use "Ctrl+="?

function myfunc1(fig)
fig.KeyPressFcn = @zoomKeys;
hAxes = axes(fig);
% some codes
plot(1:10);
    function zoomKeys(~, event)
        if strcmp(event.Modifier, 'control')
            switch event.Key
                case 'E' %'='
                    zoom;
%                     zoom(gcf, 'on');
                case '0'
                    zoom out;
            end
        end
    end
end

2 个评论
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Mohammad Sami 2020-1-26

Using just zoom, will only toggle the mouse zoom on and off.

Pass a value to specifiy how much to zoom in.

zoomfactor = 2;

zoom(zoomfactor);

Albert Bing 2020-1-26

编辑：Albert Bing 2020-1-26

Well, the question is the shortcut "ctrl+E" just doesn't work, no matter "zoom" or "zoom(2)".

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采纳的回答

Mohammad Sami 2020-1-26

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/502005-how-to-set-shortcuts-for-zoom-tool-in-my-own-gui#answer_412071

编辑：Mohammad Sami 2020-1-26

在 MATLAB Online 中打开

Just tested your code. turns out event key is in lower case. Just to safe (in case of capslock), lets convert the value to upper case before comparison.

function zoomKeys(~, event)
    if strcmp(event.Modifier, 'control')
        k = upper(event.Key);
        % disp(k); % for debugging
        switch k
            case 'E' %'='
                zoom;
%                     zoom(gcf, 'on');
            case '0'
                zoom out;
        end
    end
end