When this returns true you need to: a) call SetDragDropPayload() exactly once, b) you may render the payload visual/description, c) call EndDragDropSource() If the item has an identifier: - This assume/require the item to be activated (typically via ButtonBehavior). - Therefore if you want to use this with a mouse button other than left mouse button, it is up to the item itself to activate with an
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nothing calls this directly
no test coverage detected