Disabling Cntrl+Left Click = Right Click

Question

Stephen 2014-7-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/143631-disabling-cntrl-left-click-right-click

评论： Robert Cumming 2014-7-28

Apparently Matlab evaluates the following events as identical (within a callback function designed to handle mouse buttondown events):

Control + Left click => 'alt'
Right click => 'alt'

They are indistinguishable. Is there any way to have the following operation instead:

Control + Left click = 'normal', just with a control modifier on the figure
Right click = 'alt'?

Thank you!

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Answer 1

Robert Cumming 2014-7-28

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https://ww2.mathworks.cn/matlabcentral/answers/143631-disabling-cntrl-left-click-right-click#answer_146686

You can use the keypressfcn to register if ctrl is pressed and modify your call back in. I'd mouse button

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Stephen 2014-7-28

在 MATLAB Online 中打开

Either I don't understand your answer, or that doesn't quite work out for me. What I'm seeing is this:

When clicking:

control + Right Mouse Button

I see SelectionType as 'alt', modifier 'control', within the callback; exactly what I would expect.

When clicking:

Control + Left Mouse Button

I again see SelectionType as 'alt' (even though left mousebutton was used), and modifier of 'control'. In other words, I don't understand any way to distinguish between the two events and modify the callback in. I am trying to do one action on Control+RightClick and a completely different action on Control+LeftClick

Based on the docs, this operation seems to be a feature (somehow...): http://www.mathworks.com/help/matlab/ref/figure_props.html (under SelectionType).

Robert Cumming 2014-7-28

I'm not near a copy of Matlab just now, but you should be able to use the keypressfcn to register if a key is pressed. Link that with your mouse call back to distinguish the difference between the two modes.

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