How to count how many times a button was pressed?

I want to write a code where I can check how many times a button was pressed (keyboard, mouse or even a pointer).

The code I have now is not working the way I want. As I click on a button for more than 1 second, it gives me a counting of 10 or more times. I want my code to count the number of clicks someone does on a button despite they spent 1second or 5seconds with the finger pressed against the button. Here is my function:

function youPressedSpaceBrah

set(figure,'KeyPressFcn',@youPressedSomething,'Name','Multitasking Game - Alerta Visual Nivel 1','NumberTitle','off', 'MenuBar', 'none','ToolBar', 'none');
clf;

%State variables
count = 0;
allowCounting = true;

%Callback functions
      %When the user presses a key
      function youPressedSomething(~,eventdata)

            if strcmp(eventdata.Character,' ')
                if allowCounting
                    count = count+1

                end
            end
        end
    end

Here is the code to call my function to the main code:

function youPressedSomething(~,eventdata)
    erros=erros+1;    
end

Thanks for your support!

Answer 1

[PG_Dev]

Joana,

If I understand your question correctly, you want to consider 'Press and Hold' of any key as a single key press. But usually press and hold of a key is considered as multiple quick key press-releases of the same key. So as you can see in the below code I've used a simple tic-toc combination to check if the time between a key press-release of the same key is less than 0.05s(you can tune this time if you want), in which case I'm just printing the key count value at that point without any increment.

    function KeyPressAnalyze

    KeyPress_Main = figure;
    set(KeyPress_Main, 'KeyPressFcn',@KeyPress_Main_KeyPress_Callback, 'KeyReleaseFcn',@KeyPress_Main_KeyRelease_Callback);

    KeyPressCount = 0;
    PressedKeyCurrent = {};

        function KeyPress_Main_KeyPress_Callback(Handle, Event)
            tic;
            PressedKeyCurrent = Event.Key;
        end

        function KeyPress_Main_KeyRelease_Callback(Handle, Event)
            KeyReleaseTime = toc;
            disp(KeyReleaseTime);

            ReleasedKey = Event.Key;
            if (strcmp(PressedKeyCurrent, ReleasedKey) && (KeyReleaseTime < 0.05))
                disp(KeyPressCount);
            else
                KeyPressCount = KeyPressCount + 1;
                disp(KeyPressCount);
            end
        end

end

Please let me know if this fixed your issue.

Regards

PG

Answer 2

[Joana Alves]

Hi PG_Dev,

yes, that did the trick on my problem! I can modify the press-release time so it's Ok! Thank You!