How determine if a key is pressed

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Arabarra 2020-3-12

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编辑： Walter Roberson 2020-11-16

Hi,

is there a system-portable way to determine if a given key is pressed?

I found this:

https://ch.mathworks.com/matlabcentral/fileexchange/64380-determine-whether-a-key-is-up-or-down

but it only works for windows....

cheers,

Daniel

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Walter Roberson 2020-3-12

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编辑：Walter Roberson 2020-11-16

Depends what you mean and what you are willing to live with.

For regular keys and you are willing to have a figure covering the display then WindowKeyPressFcn callback and test the event structure.

If you need the check to work without a figure then see:

https://www.mathworks.com/matlabcentral/answers/143088-real-time-detect-keypress#answer_285124

There might also be Java approaches.

The psychtoolbox functions are more complete and robust and better suited for timing.

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Sciences Psychology Psychtoolbox-3: Vision and neuroscience research Timing and presenting 2D and 3D stimuli

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