【转帖】layers
 

layers
layers
i'm having trouble converting my code from opendwg to dwgdirect. there are plenty of examples in the code of iterating through the layers, but i cannot get a simple bit of code like this:
oddblayertableptr players;
players = m_pdb->getlayertableid().safeopenobject(oddb::kforwrite) ;
bool b1 = players->has((const char*)strtemp);
to successfully tell me that there is a layer that i just created. when i save the file, the layer is there, but i cannot get code that will find it or access it.
any idea what is up, or better examples of code to do such things?
some code example
oddbblocktableptr pblocks = pdb->getblocktableid() . safeopenobject();
oddbsymboltableiteratorptr pblkiter = pblocks->newiterator();
for ( pblkiter->start(); ! pblkiter->done(); pblkiter->step() )
{
oddbblocktablerecordptr pblock = pblkiter->getrecordid().safeopenobject();
if ( !stricmp (name,pblock->getname()) )
{
recordid = pblkiter->getrecordid();
break;
}
}
....
with the recordid you have access to the object
i checked the code below. it works.
code:
oddblayertableptr pt = pdb->getlayertableid().safeopenobject(oddb::kforwrite);
bool bexists = pt->has("mylayer");
if (!bexists)
{
oddblayertablerecordptr pl = oddblayertablerecord::createobject();
pl->setname("mylayer");
pt->add(pl);
bexists = pt->has("mylayer");
// here bexists is true
}
sergey slezkin
thank you very much. i had just figured out that the "has" and 'getat" should do it for me, but they were refusing to work. i pasted in your code, which then worked fine. turned out i had a bug in my test harness.
appreciate the advice!