建立一个基于对话框的工程，内存作图画出三角形区域作为小岛，可设置国旗形状与颜色，在小岛上插旗，插旗完成，可按顺序查看插旗时间、位置、颜色、形状等信息-Establish a dialog-based engineering, memory mapping to draw the triangle area as small island, you can set the flag shape and color flags on the