Click where you want the curve to start, drag, release, and then move the pointer to where you want the curve to end and click. Move the pointer and click again to add a straight line segment to the curve. Double-click to close the shape.
绘制基于曲线的填色封闭形状。在选定的曲线起点位置单击、拖动、释放，然后将鼠标指针移到选定的曲线终点位置并单击。移动鼠标指针并再次单击将线条加入到曲线中。双击以完成形状。