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Declaration:function ConvertPixelToValue (XPos, YPos: integer; var MeterValue: double): boolean;

The method ConvertPixelToValue converts the pixel coordinates XPos and YPos into the corresponding meter value. If the position [XPos, YPos] is within the sector spanned by the meter anchor and the scale, the function returns TRUE and the MeterValue parameter contains the corresponding meter value. If the position is outside of the sector, the function returns FALSE and the MeterValue parameter is set to zero.

Last Update: 2012-Okt-20