GUI object not responding to left click

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Arnav Barbaad
Arnav Barbaad 2016-7-5
编辑： Geoff Hayes 2016-7-6
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???? :'(

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回答（1 个）

Geoff Hayes
Geoff Hayes 2016-7-5
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.
  1 个评论
Arnav Barbaad
Arnav Barbaad 2016-7-6
编辑：Geoff Hayes 2016-7-6
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 :/

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