Parameter	Type	Description
delta	[input] short	The distance the wheel is rotated.
keys	[input] short	Indicates whether various virtual keys are down.
docX	[input] long	The x coordinate of the document point under the mouse cursor.
docY	[input] long	The y coordinate of the document point under the mouse cursor.

Dispatch ID: 51

Raised when the mouse wheel is rotated. delta is the distance the wheel is rotated, expressed in multiples or divisions of 120. A positive value indicates that the wheel was rotated forward, away from the user; a negative value indicates that the wheel was rotated backward, toward the user. The mouse pointer position in document coordinates is passed through the docX and docY parameters.

By default, the mouse wheel scrolls the view. Set MouseWheelAction to None if you need to implement custom interaction from MouseWheel handler.

FlowChart Members
FlowChart Class
FlowChartPro Namespace