改良后的grid控件，能够针对每一个单元格进行修改，接口方便。-Improved grid control can be modified for each cell, convenient interface.

巧借EXCEL在AUTOCAD中绘曲线,通过Excel单元格值设置坐标点，将坐标点控制cad绘出-The pretext of Excel in AUTOCAD to draw the curve, through Excel cell value to set the coordinates, the coordinate point control cad draw