【转帖】pglyxq 朋友，重载捕捉函数出错，帮看看
 

pglyxq 朋友，重载捕捉函数出错，帮看看
pglyxq 朋友，重载捕捉函数出错，帮看看
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 &
要定义插入点的目标捕捉函数可作如下修改:
在类的申明里增加如下内容:
virtual acad::errorstatus getosnappoints(acdb::osnapmode osnapmode,
int gsselectionmark,
const acgepoint3d& pickpoint,
const acgepoint3d& lastpoint,
const acgematrix3d& viewxform,
acgepoint3darray& snappoints,
acdbintarray& geomids) const;
acad::errorstatus osnapins(const acgepoint3d& pickpoint,
acgepoint3darray& snappoints) const;
在类的实现中增加如下内容:
acad::errorstatus cmarectwindow::osnapins(const acgepoint3d& pickpoint, acgepoint3darray& snappoints) const
{
assertreadenabled();
snappoints.append(m_startpt);
return acad::eok;
}
acad::errorstatus cmarectwindow::getosnappoints(acdb::osnapmode osnapmode,
int gsselectionmark,
const acgepoint3d& pickpoint,
const acgepoint3d& lastpoint,
const acgematrix3d& viewxform,
acgepoint3darray& snappoints,
acdbintarray& geomids) const
{
assertreadenabled();
switch(osnapmode)
{
case acdb::kosmodeins: //228
return osnapins(pickpoint, snappoints);
default:
break;
}
return acdbentity::getosnappoints(osnapmode,
gsselectionmark,
pickpoint,
lastpoint,
viewxform,
snappoints,
geomids);
}
你如果还是不行我这有完整的代码和编译好的程序,我可以给你!
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;
}
要移动夹点必须先定义夹点,贴上你定义夹点的代码,看看你是如何定义的(还是你根本就没有定义夹点的代码)?