The feature request is about introducing a configuration option about a delay to start the drag operation. Currently, the lack of such functionality causes unexpected drag clue appearance on double click. 

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In my treeview the user can double-click to open an item or they can drag to reorganize the tree. When you double-click you can see the drag & drop initiates for the brief fraction of a second. Which is a confusing and unpleasant UX. It would be preferable if a drag & drop didn't initiate until the user dragged for 3-4 pixels from the mousedown location, as opposed to a single pixel. 

In general if there's a behavior like this that I would want to tweak, are there ways to adjust the control or override behaviors using Javascript? I used to do all sorts of stuff with the jQuery controls.

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