How to drag content from a maximized window and drop it in a minimized window

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http://askubuntu.com – Today I was trying to drag some images from Nautilus which was maximized to a minimized Inkscape so I could work with them. My intuitive way was to drag the images to the Inkscape launcher icon and this would maximized Inkscape so I could drop the images there. Similar to how old gnome worked when dragging a content to one of the windows that showed in the upper panel. I could not it that way. So how can I drag a content from one program that is maximized and drop it in another program that is minimized. (HowTos)