GUI object not responding to left click

I am trying to detect a left mouse click on a GUI object (specfically, edit and static Box) but it absolutely refuses to do it. I tried 4-5 different methods of coding presented here, but none of them works. Funny thing is, it recognises right click but no matter what I do, it won't recognize a left click. Either from the trackpad or a mouse connected to my Mac. It even recognises double click IF AND ONLY IF it is followed with a right click, then it prints both double click and right click simultaneously (it won't recognize double click on its own)

Here is the simplest way I tried to code (with many other ways) but all of them give the exact same output as mentioned above

          seltype = get(gcf,'SelectionType')
          if strcmpi(seltype,'Normal')
              fprintf('left mouse button pressed!\n');
          elseif strcmpi(seltype,'alt')
              fprintf('right mouse button pressed!\n');
          elseif strcmpi(seltype,'open')
              fprintf('double mouse click!\n');
          else
              fprintf('other - shift and mouse-click!\n');
          end

WHAT IS WRONG WITH MATLAB???? :'(

Answer 1

[Geoff Hayes]

Arnav - when I use the above code in the WindowButtonDownFcn callback for my figure (not the edit text box), then MATLAB has no problem in recognizing a left-click, right-click and double-click. On my MacBook, pressing the trackpad results in a left-click, pressing the ctrl button and the trackpad results in a right-click, and double-clicking the track pad is obvious. Note that you will still register a left- or right-mouse click prior to the double-click. This is expected behaviour and will let you know if you have double-clicked with left or right button.

I am running with R2014a and OS X 10.11.5.

[Arnav Barbaad]

Hello Geoff,

Thank you for the quick reply. I started MATLAB a week ago and your replies on other threads have helped me a lot :)

I am using R2016a-Student use on OS X 10.11.5 and can't get it to work.

However, the following code opens a blank figure which DOES recognize left, right and double click properly but I can't really make out what is happening here:-

 if nargin == 0 
    fig = figure; 
    set(fig, 'buttondownfcn', 'hit_tester(get(gcf, ''selectiontype''))'); 
 else 
    if nargin == 1 
      button = varargin(1); 
      disp(button); 
    end 
 end

How can I implement the above for static or edit textbox in GUI?

Also, I know that the code in my original question registers a right or left click before registering double click, but as I said, it recognizes a double LEFT click IF AND ONLY IF I follow it with a single right click. Weird :/