This event is generated whenever the user positions the mouse over the y-axis scale area and presses down on its left, right, or middle button. Refer to Overview for an illustration of XY Chart's major components.
The parameters passed along with the event are described below.
|Button||Indicates which mouse button was pressed. 1=Left button; 2=Right button; and 4=Middle button.|
|Index||Indicates which y-axis scale index the mouse was clicked on. Recall that up to NumYScales can be defined.|
|xPos||Indicates the x-position within the chart in twips.|
|yPos||Indicates the y-position within the chart in twips.|