nsIDOMMouseScrollEvent 编辑

dom/interfaces/events/nsIDOMMouseScrollEvent.idlScriptable This interface represents a mouse scroll wheel event. 1.0 66 Introduced Gecko 1.9.1 Inherits from: nsIDOMMouseEvent Last changed in Gecko 1.9.1 (Firefox 3.5 / Thunderbird 3.0 / SeaMonkey 2.0) Gecko 1.9.2 note Prior to Gecko 1.9.2, this inherited from nsISupports instead of from nsIDOMMouseEvent.

Method overview

void initMouseScrollEvent(in DOMString typeArg, in boolean canBubbleArg, in boolean cancelableArg, in nsIDOMAbstractView viewArg, in long detailArg, in long screenXArg, in long screenYArg, in long clientXArg, in long clientYArg, in boolean ctrlKeyArg, in boolean altKeyArg, in boolean shiftKeyArg, in boolean metaKeyArg, in unsigned short buttonArg, in nsIDOMEventTarget relatedTargetArg, in long axis);

Attributes

Attribute	Type	Description
axis	long	Indicates which mouse wheel axis changed; this will be either HORIZONTAL_AXIS or VERTICAL_AXIS. Read only.

Constants

Constant	Value	Description
HORIZONTAL_AXIS	1	The horizontal (X) axis.
VERTICAL_AXIS	2	The vertical (Y) axis.

Methods

initMouseScrollEvent()

Initializes the progress event object.

void initMouseScrollEvent(
  in DOMString typeArg,
  in boolean canBubbleArg,
  in boolean cancelableArg,
  in nsIDOMAbstractView viewArg,
  in long detailArg,
  in long screenXArg,
  in long screenYArg,
  in long clientXArg,
  in long clientYArg,
  in boolean ctrlKeyArg,
  in boolean altKeyArg,
  in boolean shiftKeyArg,
  in boolean metaKeyArg,
  in unsigned short buttonArg,
  in nsIDOMEventTarget relatedTargetArg,
  in long axis
);

Parameters

typeArg

The type of event. Must be one of "abort", "error", "load", "loadstart", or "progress".

canBubbleArg

Specifies whether or not the created event will bubble.

cancelableArg

Specifies whether or not the created event can be canceled.

viewArg

The nsIDOMAbstractView in which the event occurred.

detailArg

 

screenXArg

The X coordinate at which the event occurred, in screen coordinates.

screenYArg

The Y coordinate at which the event occurred, in screen coordinates.

clientXArg

The X coordinate at which the event occurred, in client coordinates.

clientYArg

The Y coordinate at which the event occurred, in client coordinates.

ctrlKeyArg

true if the control key was down when the event occurred, otherwise false.

altKeyArg

true if the Alt key was down when the event occurred, otherwise false.

shiftKeyArg

true if the shift key was down when the event occurred, otherwise false.

metaKeyArg

true if the meta key was down when the event occurred, otherwise false.

buttonArg

Indicates which mouse button was pressed when the event occurred, if any.

relatedTargetArg

The event target related to this event.

axis

The mouse wheel axis for this event; this is either HORIZONTAL_AXIS or VERTICAL_AXIS.

See also

• nsIDOMMouseEvent
• nsIDOMEvent
• nsIDOMEventTarget