Drag and Drop Images

[Sannyasin Brahmanathaswami]

From a substack called "library"
  		 Where images are loaded one after another to a group, 
		referenced by filename (to image data) on disk (not placed)

 to a mainstack called "Slideshow"
	 with one Image per card

Before I try and reinvent the wheel, does anyone have handlers or  a stack which shows how to drag and drop images (not from desktop) but from one stack to another?

This is for content development purposes, 
so the UIUX does not have to be "pretty". 
(such as setting the cursor to an id of an image .... etc)

BR