[求助]帮忙看个程序~

dream0020

多谢进来的各位,请看看下面的程序运行后为什么不显示起点和终点坐标?

static void AsdkLineInfo_Info(void)
 {
  // Add your code for command AsdkLineInfo._Info here
        AcGePoint3d pt1,pt2;

ads_name eLine;
AcDbLine* pLine;
AcDbObjectId eId;
acdbGetObjectId(eId,eLine);
acdbOpenAcDbEntity((AcDbEntity*&)pLine,eId,AcDb::kForRead);
pt1=pLine->startPoint();//得到起点
pt2=pLine->endPoint();//得到终点
pLine->close();
acutPrintf("得到了起点和终点");
 

 }