IShapeOptionList.GetGradientStopAlpha Method
Returns a list of individual alpha values for the stops of a gradient. This is not available in xls files, only xlsx. The alpha values determine the opacity of each stop, with 0 being completely transparent and 255 being completely opaque. This value might be null if there is no gradient in the pattern, or if the individual stops don't have a defined alpha.
Syntax
Unit: FlexCel.Core
function IShapeOptionList.GetGradientStopAlpha: TBytes; virtual; abstract;