【转帖】i see only background in win32 application
 

i see only background in win32 application
i see only background in win32 application
i'm trying to display a drawing, in a vc++ 2003 windows 32 application, without mfc. what i can get is only the background of the drawing, nothing else appears. in wm_paint message, i just call this piece of code, derived from samples.
maybe i'm missing something.
i've tryed even the exgsopenglvectorizedevice, but does'nt display anything.
thanks for any answer.
ciao!!!
stefano gemma
---------------------
void vectorize(oddbdatabaseptr &pdb,hwnd hwnd)
{
// drawing has already been loaded to pdb
// create the vectorization context.
odgicontextfordbdatabaseptr pdwgcontext = odgicontextfordbdatabase::createobject();
// create the custom vectorization device
odgsdeviceptr pdevice = exgsscreendevice<exgsgdivectorizedevice>::createob ject();
odrxdictionaryptr pproperties = pdevice->properties();
if(pproperties.get())
{
pproperties->putat("windowhwnd", odrxvariantvalue((oduint32)hwnd));
if(pproperties->has("doublebufferenabled")) // check if property is supported
{
pproperties->putat("doublebufferenabled", odrxvariantvalue(true));
}
}
// set the database to be vectorized.
pdwgcontext->setdatabase(pdb);
// prepare the device to vectorization the active layout in this database.
pdevice = oddbgsmanager::setupactivelayoutviews(pdevice, pdwgcontext);
pdevice->setbackgroundcolor(odrgb(0,255,255));
rect rc;
getclientrect(hwnd,&rc);
// set the screen size for the generated geometry.
odgsdcrect screenrect(odgsdcpoint(rc.left, rc.top), odgsdcpoint(rc.right,rc.bottom));
pdevice->onsize(screenrect);
// initiate vectorization.
pdevice->update();
}
hi,
1.does odamfcapp shows the drawing ? if so:
2.could you please debug and check errors on gdi calls inside exgsscreendevice<exgsgdivectorizedevice>::update() to clarify the problem.

quote:
originally posted by dmitry a. novikov
hi,
1.does odamfcapp shows the drawing ? if so:
2.could you please debug and check errors on gdi calls inside exgsscreendevice<exgsgdivectorizedevice>::update() to clarify the problem.
odamfcapp works fine.
the only strange thing i've seen is for lines width in pixel, that was 0. i say "was", because, after the upgrade to 1.11 i can't see even the background
the program now raise an exception on this code:
odstring slayout = pdb->findactivelayout(true);
oddbobjectid layoutid = pdb->findlayoutnamed(slayout);
oddblayoutptr playout = layoutid.safeopenobject();
// here it raise unhandled exception, access violation read of address 0
pdevice = oddbgsmanager::setupactivelayoutviews(pdevice, pdwgcontext);
i can suppose that there's something wrong with layout or view. the disassembly show error in:
mr.exe!odgsbasemodule::createview() row 75 + 0x9
thanks.
stefano gemma
quote:
originally posted by stegemma
odamfcapp works fine.
// here it raise unhandled exception, access violation read of address 0
pdevice = oddbgsmanager::setupactivelayoutviews(pdevice, pdwgcontext);
check a few posts ago with title "setupactivelayoutviews/setuplayoutviews" maybe that could help you...
last edited by clisk; 14th june 2004 at 10:36 amfff">. reason: added link to posts
hi,
i figured out it.
it seems to be a bug. to bypass it implement gslocalmodule and create device via its createdeviceobject()
code:
class gslocalmodule : public odgsbasemodule
{
public:
void addref() {}
void release() {}
odsmartptr<odgsbasevectorizedevice> createdeviceobject()
{
return exgsscreendevice<exgsgdivectorizedevice>::createobject();
}
odsmartptr<odgsviewimpl> createviewobject()
{
return odrefcountimpl<exgdivectorizeview, odgsviewimpl>::createobject();
}
odsmartptr<odgsbasevectorizedevice> createbitmapdeviceobject()
{
//return exgsbitmapdevice<exgsgdivectorizedevice>::createobject();
return odsmartptr<odgsbasevectorizedevice>();
}
odsmartptr<odgsviewimpl> createbitmapviewobject()
{
//return odrefcountimpl<exgdivectorizeview, odgsviewimpl>::createobject();
return odsmartptr<odgsviewimpl>();
}
}
localgsmodeule;
// create the custom vectorization device
odgsdeviceptr pdevice = localgsmodeule.createdeviceobject();