Technique of dragging in computer graphics?

Answer 1

Drag-and-Drop or DnD is the action of clicking on a virtual object and dragging it to a different location or onto another virtual object. In general, it can be used to invoke many kinds of actions, or create various types of associations between two abstract objects.

As a feature, support for drag-and-drop is not found in all software, though it is sometimes a fast and easy-to-learn technique for users to perform tasks. However, the lack of affordances in drag-and-drop implementations means that it not always obvious that an item can be dragged.

The basic sequence involved in drag-and-drop is:

1).Press, and hold down, the button on the mouse or other pointing device, to "grab" the object

2)."Drag" the object/cursor/pointing device to the desired location

3)."Drop" the object by releasing the button.