| void CBCGPChartTrendFormula::GetTrendRange | ( | double & | dblMinVal, | 
| double & | dblMaxVal | ||
| ) | const | 
Returns current trend line range.
This method returns current trend line range. If dblMinVal is equal to dblMaxVal, the range is considered empty and a trend line is displayed according to minimum and maximum displayed values on X axis.
| dblMinVal | Contains minimum range value when the method returns. | 
| dblMaxVal | Contains maximum range value when the method returns. |