【转帖】odgicontextfordbdatabase mfc cview
 

odgicontextfordbdatabase & mfc cview

odgicontextfordbdatabase & mfc cview
hi,
i have a question that i cannot resolve:
how can i associate odgicontextfordbdatabase and cview, without inheriting a new class from both?
i explain better: i need to render on mfc view using wingdi.gs.
all examples create a new class view inheriting from cview & odgicontextfordbdatabase and associate device to view using
code:
m_pdevice = oddbgsmanager::setupactivelayoutviews(m_pdevice, this);
my problem is that i cannot make a new class inheriting from odgicontextfordbdatabase, and then i need a way to associate cview to odgicontextfordbdatabase.......
i'm becoming mad
thank you a lot,
walter
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

myzhar
# 9th february 2006, 03:36 am

softdev join date: jun 2002
location: st'petersburg, russia
posts: 522

no need in association at all.
you can just write like this (code from odvectorizeex sample):
code:
// begin vectorization.

// create the vectorization context.
odgicontextfordbdatabaseptr pdwgcontext = odgicontextfordbdatabase::createobject();
// create the custom rendering device and set the output stream for the device.
odgsdeviceptr pdevice = exgssimpledevice::createobject(output, exgssimpledevice::k3ddevice);
// set the database to be vectorized.
pdwgcontext->setdatabase(pdb);
// prepare the device to render the active layout in this database.
pdevice = oddbgsmanager::setupactivelayoutviews(pdevice, pdwgcontext);
if you need to override some methods of odgicontextfordatabase, you can make your inheritant and pass pointer to it to setupactivelayoutviews.
sincerely yours,
george udov

george udov
# 9th february 2006, 03:42 am

registered user join date: feb 2006
location: pisa
posts: 69

i solved the problem...
the code i wrote yesterday works well ( i used odrxobjectimpl<odgicontextfordbdatabase> mgicontext; to have a context variable).
the only problem was that i was initializing the db before the loading.
when i tried then to render, there was no association db<->device and the program crashed
the problem is that when you are working with something new and you have a problem, you search always in hard things and don't think to simpliest
thank you
walter
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============

myzhar

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no need in association at all.
you can just write like this (code from odvectorizeex sample):
code:
// begin vectorization.

// create the vectorization context.
odgicontextfordbdatabaseptr pdwgcontext = odgicontextfordbdatabase::createobject();
// create the custom rendering device and set the output stream for the device.
odgsdeviceptr pdevice = exgssimpledevice::createobject(output, exgssimpledevice::k3ddevice);
// set the database to be vectorized.
pdwgcontext->setdatabase(pdb);
// prepare the device to render the active layout in this database.
pdevice = oddbgsmanager::setupactivelayoutviews(pdevice, pdwgcontext);
if you need to override some methods of odgicontextfordatabase, you can make your inheritant and pass pointer to it to setupactivelayoutviews.
sincerely yours,
george udov

i solved the problem...
the code i wrote yesterday works well ( i used odrxobjectimpl<odgicontextfordbdatabase> mgicontext; to have a context variable).
the only problem was that i was initializing the db before the loading.
when i tried then to render, there was no association db<->device and the program crashed
the problem is that when you are working with something new and you have a problem, you search always in hard things and don't think to simpliest
thank you
walter
myzhar
==============
ing. walter lucetti
geomind srl
pisa - italy
==============