If the window is not visible then this would be the expected result

Yair, this is the code of my function :

% buildStatusBarObject
function this = buildStatusBarObject(this)
    jFrame = get(this.mainWindow,'JavaFrame');
    if(isempty(jFrame))
        Logger.logError('Retrieved an EMPTY jFrame Object');
    end
    drawnow;
    pause(0.5);
    try
        % This works up to R2011a
        jRootPane = jFrame.fFigureClient.getWindow;
    catch
        try
            % This works from R2008b and up, up to HG2
            jRootPane = jFrame.fHG1Client.getWindow;
        catch
            % This works in HG2
            jRootPane = jFrame.fHG2Client.getWindow;
        end
    end
    statusbarObj = com.mathworks.mwswing.MJStatusBar;
    jRootPane.setStatusBar(statusbarObj);
    statusbarObj.setText('please wait - processing...')
    jRootPane.setStatusBarVisible(true);
end

The jRootPane is still empty, this is why the call ”jRootPane.setStatusBar(statusbarObj);” creates the following error : Attempt to reference field of non-structure array.

this is probably because you have not ensured that the figure window is fully displayed when you reach that code line. Adding drawnow and pause(0.5) should solve this: http://undocumentedmatlab.com/blog/matlab-and-the-event-dispatch-thread-edt

Unfortunately Yair,

I tried the following code :

try
   % This works up to R2011a
   jRootPane = jFrame.fFigureClient.getWindow;
catch
   try
      % This works from R2008b and up, up to HG2
      jRootPane = jFrame.fHG1Client.getWindow;
   catch
      % This works in HG2
      jRootPane = jFrame.fHG2Client.getWindow;
   end
end

And the error that is have is now : Attempt to reference field of non-structure array.
It is because JRootPane is empty.

(I use the R2014b Matlab version)

@Jules – see item #2 here: http://undocumentedmatlab.com/blog/hg2-update#observations

In my code I use the two lines that you provided above :

jFrame = get(hFig,'JavaFrame');
jRootPane = jFrame.fFigureClient.getWindow;

Unfortunately I have the following error :

No appropriate method, property, or field fFigureClient for class com.mathworks.hg.peer.HG2FigurePeer.

The version of Matlab that I use is R2014b

Your solution works perfectly!

P.S. I always find coincidences unsettling, like you having already posted a week ago the solution to the problem which I encountered only yesterday! Makes one wonder…

@Andrei – see my article from last week:
http://undocumentedmatlab.com/blog/matlab-callbacks-for-java-events-in-r2014a

A while ago I wrote a little Matlab utility which uses your brilliant “statusbar” utility from the File Exchange. I was getting the handle returned by “statusbar” (which is of type ‘com.mathworks.mwswing.MJStatusBar‘) and then I was setting its ‘ToolTipText‘ and ‘MouseClickedCallback‘ properties. The code looks like this:

set(sb.TextPanel, 'ToolTipText', sToolTip, 'MouseClickedCallback', @TestStatusBarCallback)

This used to work just fine in the past, but in more recent versions of Matlab (e.g. R2014a) I’m getting the following error:

The name 'MouseClickedCallback' is not an accessible property for an instance of class 'com.mathworks.mwswing.MJStatusBar$1'.

I’m guessing they have changed the way one sets up a callback for a mouse click on the status bar. Could you let me know how this is done these days?

Thanks,
Andrei V