学步园

填充样式的定义要用到ISimpleFillSymbol，或者要用到

具体实现如下：

                //填充样式
                ISimpleFillSymbol pFillsy;
                pFillsy = new SimpleFillSymbolClass();
                //pFillsy.Color = GetRgbColor(125, 60, 60);
                pFillsy.Style = esriSimpleFillStyle.esriSFSCross;

GetRgbColor方法的实现如下：

        /// <summary>
        /// 取颜色
        /// </summary>
        /// <param name="red">红</param>
        /// <param name="green">绿</param>
        /// <param name="blue">蓝</param>
        /// <returns>RgbColor</returns>
        private RgbColor GetRgbColor(int red, int green, int blue)
        {
            //颜色
            RgbColor rgbColor = new RgbColorClass();
            rgbColor.Red = red;
            rgbColor.Green = green;
            rgbColor.Blue = blue;
            return rgbColor;
        }