void CDrawCommand::Draw2LineAngularDimension()
    {
        MrxDbgRbList spFilter = Mx::mcutBuildList(RTDXF0,_T("LINE"),0);
        McDbObjectId objId1;        
        McGePoint3d  ptPick1;

        if(MrxDbgUtils::selectEnt(_T("选择直线段1:"),spFilter.data(),objId1,ptPick1) != RTNORM)
        {
            return;
        }


        McDbObjectId objId2;        
        McGePoint3d  ptPick2;

        if(MrxDbgUtils::selectEnt(_T("选择直线段2:"),spFilter.data(),objId2,ptPick2) != RTNORM)
        {
            return;
        }

        if(objId1 == objId2)
        {
            Mx::mcutPrintf(_T("不能选择同一个直线"));
            return;
        }

        McDbObjectPointer<McDbCurve> spCurve1(objId1,McDb::kForRead);
        if(spCurve1.openStatus() != Mcad::eOk )
        {
            MXASSERT(0);
            return;
        }

        McDbObjectPointer<McDbCurve> spCurve2(objId2,McDb::kForRead);
        if(spCurve2.openStatus() != Mcad::eOk )
        {
            MXASSERT(0);
            return;
        }

        McGePoint3d pt11,pt12,pt21,pt22;
        spCurve1->getStartPoint(pt11);
        spCurve1->getEndPoint(pt12);

        spCurve2->getStartPoint(pt21);
        spCurve2->getEndPoint(pt22);

        McGeVector3d vec1 = pt12 - pt11;
        McGeVector3d vec2 = pt22 - pt21;

        if(vec1.isParallelTo(vec2) == Mdesk::kTrue)
        {
            Mx::mcutPrintf(_T("两个直线不能平行"));
            return;
        }

        McDb2LineAngularDimension* pDim = new McDb2LineAngularDimension(pt11,
            pt12,
            pt21,
            pt22,
            ptPick2,
            NULL,
            Mx::mcdbHostApplicationServices()->workingDatabase()->dimstyle() );

        CDraw2LineAngularDimensionJig jig(pDim);
        if(jig.DoIt() )
        {
            MrxDbgUtils::addToCurrentSpaceAndClose(pDim);
        }
        else
        {
            delete pDim;
        }
    }