【转帖】arx （vc60+acad2）自定义实体类读写出错
 

arx （vc60+acad2）自定义实体类读写出错
arx （vc60+acad2）自定义实体类读写出错
定义成员：
acgepoint3d mfirst, msecond, mthree, mfour;
acgepoint3d mcenter;
acad::errorstatus cascocentity::dwginfields(acdbdwgfiler* pfiler)
{
assertwriteenabled();
acad::errorstatus es;
// call dwginfields from acdbentity
if ((es = acdbentity::dwginfields(pfiler)) != acad::eok) {
return es;
}
// read version number.
adesk::uint16 version;
pfiler->readitem(&version);
if (version > version_cascocentity)
return acad::emakemeproxy;
// read the data members.
switch (version)
{
case (1):
// todo: here you can file datamembers not
// created by the objectarx add-in.
pfiler->readitem(&version); //原来这儿多了一行，读了两次，谢谢xd论坛binbin
pfiler->readitem(&mcenter);
pfiler->readitem(&mfirst);
pfiler->readitem(&msecond);
pfiler->readitem(&mthree);
pfiler->readitem(&mfour);
break;
}
return pfiler->filerstatus();
}
acad::errorstatus cascocentity::dwgoutfields(acdbdwgfiler* pfiler) const
{
assertreadenabled();
acad::errorstatus es;
// call dwgoutfields from acdbentity
if ((es = acdbentity::dwgoutfields(pfiler)) != acad::eok) {
return es;
}
// write version number.
pfiler->writeitem((adesk::uint16) version_cascocentity);
// write the data members.
// todo: here you can file datamembers not
// created by the objectarx add-in.
pfiler->writeitem(mcenter);
pfiler->writeitem(mfirst);
pfiler->writeitem(msecond);
pfiler->writeitem(mthree);
pfiler->writeitem(mfour);
return pfiler->filerstatus();
}
acad::errorstatus cascocentity::dxfinfields(acdbdxffiler* pfiler)
{
assertwriteenabled();
struct resbuf rb;
if ((acdbentity::dxfinfields(pfiler) != acad::eok) ||
!pfiler->atsubclassdata("cascocentity"))
return pfiler->filerstatus();
// read version number.
pfiler->readitem(&rb);
if (rb.restype != acdb::kdxfint16) {
pfiler->pushbackitem();
pfiler->seterror(acad::einvaliddxfcode,
"nerror: expected object version group code %d",
acdb::kdxfint16);
return pfiler->filerstatus();
} else {
adesk::uint16 version = rb.resval.rint;
if (version > version_cascocentity)
return acad::emakemeproxy;
}
// todo: here you can file datamembers not
// created by the objectarx add-in.
pfiler->readitem(&rb);
if (rb.restype != acdb::kdxfxcoord)
mcenter = aspnt3d(rb.resval.rpoint);
pfiler->readitem(&rb);
if (rb.restype != acdb::kdxfxcoord +1)
mfirst = aspnt3d(rb.resval.rpoint);
pfiler->readitem(&rb);
if (rb.restype != acdb::kdxfxcoord +2)
msecond = aspnt3d(rb.resval.rpoint);
pfiler->readitem(&rb);
if (rb.restype != acdb::kdxfxcoord +3)
mthree= aspnt3d(rb.resval.rpoint);
pfiler->readitem(&rb);
if (rb.restype == acdb::kdxfxcoord +4)
mfour = aspnt3d(rb.resval.rpoint);
return pfiler->filerstatus();
}
acad::errorstatus cascocentity::dxfoutfields(acdbdxffiler* pfiler) const
{
assertreadenabled();
acad::errorstatus es;
if ((es = acdbentity::dxfoutfields(pfiler)) != acad::eok)
return es;
// write subclass marker.
pfiler->writeitem(acdb::kdxfsubclass, "cascocentity");
// write version number.
pfiler->writeitem(acdb::kdxfint16, (adesk::uint16) version_cascocentity);
// todo: here you can file datamembers not
// created by the objectarx add-in.
pfiler->writeitem(acdb::kdxfxcoord, mcenter);
pfiler->writeitem(acdb::kdxfxcoord, mfirst);
pfiler->writeitem(acdb::kdxfxcoord, msecond);
pfiler->writeitem(acdb::kdxfxcoord, mthree);
pfiler->writeitem(acdb::kdxfxcoord, mfour);
return es;
}
请问我这个自定义实体类保存读取出错在哪儿？
还有本例中夹点函数、拉伸函数、变换函数以及对象捕捉点函数如何编程？
acad::errorstatus cascocentity::getgrippoints(acgepoint3darray& grippoints,
acdbintarray& osnapmodes,
acdbintarray& geomids) const
{。。。。}
acad::errorstatus cascocentity::getstretchpoints(acgepoint3darray& stretchpoints) const
{。。。。}
acad::errorstatus cascocentity::movegrippointsat(const acdbintarray& indices,
const acgevector3d& offset)
{。。。。}
acad::errorstatus cascocentity::movestretchpointsat(const acdbintarray& indices,
const acgevector3d& offset)
{。。。。}
请各位大侠帮帮忙呀，能不能给出一个从实体类派生的例子。谢谢大家。