gen_region_polygon

1.     HObject  ho_Region;
   
2.     HTuple  hv_Row, hv_Col, hv_WindowHandle3;
   
3.     hv_Row.Clear();
   
4.     hv_Row[0] = 258.0;
   
5.     hv_Row[1] = 195.065;
   
6.     hv_Row[2] = 195.07;
   
7.     hv_Row[3] = 308.931;
   
8.     hv_Row[4] = 309.304;
   
9.     hv_Row[5] = 258.0;
   
10.     hv_Col.Clear();
    
11.     hv_Col[0] = 180.455;
    
12.     hv_Col[1] = 179.934;
    
13.     hv_Col[2] = 58.0723;
    
14.     hv_Col[3] = 58.0685;
    
15.     hv_Col[4] = 179.1;
    
16.     hv_Col[5] = 180.455;
    
17.     GenRegionPolygon(&ho_Region, hv_Row, hv_Col);
    
18.     //创建多边形区域
    
19. 
    
20.     SetWindowAttr("background_color","black");
    
21.     OpenWindow(10,10,500,500,0,"visible","",&hv_WindowHandle3);
    
22.     DispObj(ho_Region, hv_WindowHandle3);
    

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在c++中  窗口没有显示多边形啊 ？