I used your code but I have eccepetion with this too.

When I use this code this code any exception. Is this true?

set(tray,'MousePressedCallback',@clearexc)
t = java.awt.Toolkit.getDefaultToolkit();
ev = t.getAWTEventListeners();
for i = 1 : length(ev)
    str = ev(i).getListener().getClass.toString;
    t.removeAWTEventListener(ev(i));
end

Is any problem with this code?

Thanks

@Thierry – the popup is in general automatically removed by the operating system after several seconds. You can always set the popup message to empty (see the code in systray utility (setIconMessage() sub-function).

You can also delete and recreate the systray to get the same effect as workaround. Read the code in the systray utility to see how (basically, java.awt.SystemTray.getSystemTray.remove(jcomp)).

set(trayIcon,'MousePressedCallback',@clearexc)

function clearexc()
   t = java.awt.Toolkit.getDefaultToolkit();
   ev = t.getAWTEventListeners();
   for i = 1 : length(ev)
      str = ev(i).getListener().getClass.toString;  
      if str.indexOf('com.mathworks.mwswing.desk.DTSelectionManager') >= 0 || ... % see http://undocumentedmatlab.com/blog/uisplitpane/#comment-658
         str.indexOf('javax.swing.plaf.basic.BasicLookAndFeel') >= 0 || ...
         str.indexOf('com.mathworks.widgets.text.mcode.MLintDecorator') >= 0 || ...
         str.indexOf('com.mathworks.widgets.desk.DTSelectionManager') >=0 || ... % TD
         str.indexOf('com.mathworks.widgets.grouptable.ToolTipSupport') >=0 || ... % TD
         str.indexOf('com.mathworks.widgets.text.STPMessagePanel') >=0 || ... % TD
         str.indexOf('com.mathworks.widgets.text.MWToolTipSupport') >=0 || ... % TD->crashes on double-click
         str.indexOf('com.mathworks.widgets.tooltip') >=0, % TD
            t.removeAWTEventListener(ev(i));
            %disp(str)
      end
   end  % for ev
end  % function clearexc

One could convert cellstr in multi-lines char with one line:
msg={‘Another’,’multi-line’,’Example’}
sprintf(‘%s\n’,msg{:})
so one can then pass it to systray.

@Thierry – indeed, char(10) can be used to break lines in the systray message.

You might also try to use HTML formatting with a <br/> tag (untested, but I think it should work).

Cell arrays are currently not supported unfortunately.

systray(hIconTray,'Message',{'title',['informational message',char(10),'Second line'],'info'})

It may be nice if the systray function would accept as message as cellstr and breaking lines automatically like usual in Matlab msgbox.
Example:

systray(hIconTray,'Message',{'title',{'informational message','Second line'},'info'})

@Mike – thanks – couldn’t ask for anything more

That looks like a “bug.” I’ll ask them to fix it, but the earliest it would be done would be 12b, if at all…