DHTMLX Error on dock [ing] an undocked cell

Question

I am having trouble getting an undocked cell in DHTMLX 4 to dock.

When I click on the provided "dock" button(on the undocked cell) I get the error: Uncaught TypeError: Cannot read property 'close' of null

I also get this same error when assigning the .dock() function to another button.

onclick: function ()
{

// where to undock to
_this.dhxLayout.dhxWins.attachViewportTo("layout_div");

// init & undock window
var popup_cell = _this.dhxLayout.cells("c");
popup_cell.undock(0,0,800,600);

var popup_window = _this.dhxLayout.dhxWins.window("c");
popup_window.button("minmax1").hide();
popup_window.setText(" ");

// things to do when window is opened
popup_cell.attachEvent("onUnDock", alert("undocked"));

// assigning .dock() to another button, neither work
popup_window.button("park").attachEvent("onClick", function(popup_window){_this.dhxLayout.cells("c").dock();});
// popup_window.button("park").attachEvent("onClick", function(popup_window){popup_cell.dock()});

 }

The traceback takes me to c=this.layout.dhxWins.window(this.conf.name);c.close(); so I am guessing that c is somehow undefined? Is there an argument/parameter I am supposed to be passing in the .dock(foo)? The API shows no examples with it.

Any help is greatly appreciated!

Answer 1

I missed out on this: http://forum.dhtmlx.com/viewtopic.php?f=5&t=37052

And followed it to change the offending line of: c=this.layout.dhxWins.window(this.conf.name);c.close();

(in dhtmlx.js) to

c=g.dhxWins.window(this.conf.name);c.close();

and the problem is fixed!