MouseWheel Property
Returns or sets a String indicating which macro, event procedure, or user-defined function runs when the MouseWheel event occurs. Read/write.
expression.MouseWheel
expression Required. An expression that returns one of the objects in the Applies To list.
Remarks
Valid values for this property are "macroname" where macroname is the name of macro, "[Event Procedure]" which indicates the event procedure associated with the MouseWheel event for the specified object, or "=functionname()" where functionname is the name of a user-defined function. For a more detailed discussion of event properties, see "Event Properties."
Example
The following example specifies that when the MouseWheel event occurs on the first form of the current project, the associated event procedure should run.
Forms(0).MouseWheel = "[Event Procedure]"