ObjectARX 创建AcDbLeader引线附着块对象实例_objectarx cdc

 三点引线附着块参照实例

        // 创建AcDbLeader引线
        ads_point p1,p2,p3;
        if (RTNORM != acedGetPoint(NULL,_T("\n请选择引线第一点: "),p1))
            return;
        if (RTNORM != acedGetPoint(p1,_T("\n请选择引线第二点: "),p2))
            return;
        if (RTNORM != acedGetPoint(p2,_T("\n请选择引线第三点: "),p3))
            return;
        // ucs点转换到wcs点
        acdbUcs2Wcs(p1,p1,false);
        acdbUcs2Wcs(p2,p2,false);
        acdbUcs2Wcs(p3,p3,false);
        // ads点转为AcGe点
        AcGePoint3d pt1=asPnt3d(p1);
        AcGePoint3d pt2=asPnt3d(p2);
        AcGePoint3d pt3=asPnt3d(p3);
        //  设置第三点为第二点的水平点
        pt3.y=pt2.y;
 
        AcDbDatabase *pDb=acdbHostApplicationServices()->workingDatabase();
        // 使用智能指针打开块表
        AcDbBlockTablePointer pBlkTbl(