Fires on the target object when the mouse button is released during a drag-and-drop operation.
If the event bubbles and is cancellable, return VARIANT_TRUE to prevent the event from bubbling to other event handlers in the document tree. Return VARIANT_FALSE to allow bubbling.
The DISPID for this event is defined in mshtmdid.h. Use this value to identify the event handler when implementing IDispatch::Invoke.
Bubbles Yes Cancels Yes To invoke Drag the selection over a valid drop target and release the mouse. Default action Calls the associated event handler.
When scripting custom functionality, use the returnValue property to disable the default action.
You must cancel the default action for HTMLMarqueeElementEvents::ondragenter and HTMLMarqueeElementEvents::ondragover in order for HTMLMarqueeElementEvents::ondrop to fire. In the case of a div, the default action is not to drop. This can be contrasted with the case of an input type=text element, where the default action is to drop. In order to allow a drag-and-drop action on a div, you must cancel the default action by specifying window.event.returnValue=false in both the HTMLMarqueeElementEvents::ondragenter and HTMLMarqueeElementEvents::ondragover event handlers. Only then will HTMLMarqueeElementEvents::ondrop fire.
As of Microsoft Internet Explorer 5, drag-and-drop events can be used to carry out drag-and-drop activities, not only with input type=text elements, but also with block and inline tags. For example, text can be selected, dragged, then dropped on a div target. This causes several target events to fire, including HTMLMarqueeElementEvents::ondragenter, HTMLMarqueeElementEvents::ondragover, and HTMLMarqueeElementEvents::ondrop. Because drag-and-drop actions are not directly supported on block and inline tags, you must use extra scripting to carry out the move or copy to the target using IHTMLElement::innerText, for example.