Generally speaking a Windows is “contained” within the parent DOM object:
dhxWins = new dhtmlXWindows();
dhxWins.enableAutoViewport(false);
dhxWins.attachViewportTo(document.body);
With multi displays is it possible to attached a window object to the device:screen rather than being contained within the browser’s real estate?
Maybe some images can depict the desired result. In the image window_contained the dhtmlx window is truncated when it is pushed beyond the browser’s container. The image window_roam depicts the desired result - the dhtmlx window extend beyond the browser and can be placed anywhere on the desktop.