pglyxq 朋友，重载捕捉函数出错，帮看看

badboy518

重载捕捉函数出错

AcGePoint3d CMARectWindow::startPt()
{

 assertReadEnabled();
 return m_startPt;
}

Acad::ErrorStatus CMARectWindow::getOsnapPoints(AcDb::OsnapMode osnapMode,
       int gsSelectionMark,const AcGePoint3d& pickPoint,
       const AcGePoint3d& lastPoint,const AcGeMatrix3d& viewXform,
       AcGePoint3dArray& snapPoints,AcDbIntArray& geomIds) const
{
 assertReadEnabled();

 Acad::ErrorStatus es=Acad::eOk ;
 if (gsSelectionMark == 0) return es;
 if (osnapMode != AcDb::kOsModeIns) return es;

 AcGePoint3d pt;  //插入点

 pt = startPt();     //这里出错了，信息如下
 snapPoints.append( pt );

 
 return es;

}

你在worldDraw里是这样 pt = startPt()    调用点的，为什么在这里调用会出错？

error C2662: “CMARectWindow::startPt” : 不能将“this”指针从“const CMARectWindow”转换为“CMARectWindow &

badboy518

谢谢你。问题已解决。现在正试图移动夹点，但是没有成功。附上代码，有空帮看看。

Acad::ErrorStatus CMARectWindow::moveGripPoints(const AcDbIntArray& indices,const AcGeVector3d& offset)
{
 assertWriteEnabled();
 AcGeVector3d off(offset);
 switch(indices[0])
  {
   case 1:
   m_startPt.x +=off.x;
   break;
   default:
   break;
  }
 return Acad::eOk;
 }