"no callback property on the ToggleButton class"?

I'm trying to create a callback function for my toggle button but I keep getting the error: "There is no callback property on the Toggle Button Class". I have the first part of my code set up with:

fig=uifigure('Name','Matching Game','Position',[0 40 1450 840]);
bg = uibuttongroup(fig,'Position',[10 40 1300 330]);
but1 = uitogglebutton(bg,'Text','Corn',...
              'Value',0,...
              'Position',[40,230,200,70],...
              'callback',@buttonValue_callback);
but2 = uitogglebutton(bg,'Text','Oasis',...
              'Position',[240,30,200,70],...
              'callback',@buttonValue_callback);

I then have the callback function set up as:

function buttonValue_callback(fig,handles)
      tog1 = get(but1,'Value');
      tog2 = get(but2,'Value');
      if tog1 == tog2
          msgbox('Button pushed');
      else
          %other message
      end
  end

I have looked over this several times and can't figure out what's wrong.

Thank you in advance!

Answer 1

[Adam]

Judging by the help, and also your code, uitogglebuttons are for use within a buttongroup only where you need to define a SelectionChangedFcn on the buttongroup (not on the individual buttons) just like a radio button group.

You don't want to be having individual callbacks on the buttons within a mutually exclusive group (though you can in the old versions that are used in GUIDE which can cause confusion).

Answer 2

[Jan]

Whenever you have problems with a Matlab command, read the documentation at first:

uibuttongroup

See the example there for the 'SelectionChangedFcn'.