请帮忙解决一下区域填充AcDbHatch的问题，代码已完成，但显示不了？

colourshine

代码如下：

         AcDbObjectIdArray dbObjIds;
         AcDbHatch*        pHatch;
         AcGeVector3d      normal(0.0 , 0.0 , 1.0 );

     dbObjIds.append(LineId[7]);
     dbObjIds.append(LineId[8]);
     dbObjIds.append(LineId[9]);
     dbObjIds.append(LineId[3]);    //LineId是四边形的四条边的Id

     pHatch = new AcDbHatch();
     pHatch -> setNormal(normal);
     pHatch -> setElevation(0.0);
     pHatch -> setAssociative(Adesk::kFalse);
     pHatch -> setColorIndex(162);
     pHatch -> setPatternScale(0.0);
     pHatch -> setPatternAngle(0.0);
     pHatch -> setPattern(AcDbHatch::kPreDefined, "ANSI31");
     pHatch -> setHatchStyle(AcDbHatch::kNormal);
     pHatch -> appendLoop(AcDbHatch::kExternal, dbObjIds);
     pHatch -> evaluateHatch();
   

     AddEntityToDbs( pHatch );  // AddEntityToDbs（）函数用于将填充加入到数据库，函数没有问题
     pHatch -> close();

代码是参考了网上的一些信息写的，程序在调试时填充显示不了，请问下是什么原因？谢谢！

松竹

代码修改如下：可能是将比例设置为0.0导致的问题。

     AcDbObjectIdArray dbObjIds;
     AcDbHatch*        pHatch;
     AcGeVector3d      normal(0.0 , 0.0 , 1.0 );

     dbObjIds.append(LineId[7]);
     dbObjIds.append(LineId[8]);
     dbObjIds.append(LineId[9]);
     dbObjIds.append(LineId[3]);    //LineId是四边形的四条边的Id

     pHatch = new AcDbHatch();
     pHatch -> setNormal(normal);
     pHatch -> setElevation(0.0);
     pHatch -> setAssociative(Adesk::kFalse);
     pHatch -> setColorIndex(162);
     pHatch -> setPatternScale(1.0);
     pHatch -> setPatternAngle(0.0);
     pHatch -> setPattern(AcDbHatch::kPreDefined, "ANSI31");
     pHatch -> setHatchStyle(AcDbHatch::kNormal);
     pHatch -> appendLoop(AcDbHatch::kExternal, dbObjIds);
     pHatch -> evaluateHatch();
   

     AddEntityToDbs( pHatch );  // AddEntityToDbs（）函数用于将填充加入到数据库，函数没有问题
     pHatch -> close();