Reference TFillRule

TFillRule decides which areas are inside a path with several sub-paths. fillWinding fills each sub-path as solid unless Winding marks it as a hole, fillNonZero makes sub-paths drawn in the opposite direction holes, and fillEvenOdd makes areas where sub-paths overlap an even number of times holes.

TFillRule = (fillWinding, fillNonZero, fillEvenOdd);