【转帖】cant update a viewport, invalid execution
 

can't update a viewport, invalid execution
can't update a viewport, invalid execution
in our software i create a new layout in a drawing. in the layout i create a viewport in order to display some model space data. but the problem is that i can't get the vieport to display anything. if i save the drawing and open it again the viewport works fine. i have tried to call oddbviewport->updatedisplay after i have created it but i get the following assertion:
source\database\entities\dbviewport.cpp
line: 1335
expression: invalid execution
does anyone know how to update a viewport without closing the file and open it again?
hi,
next piece of code appends new viewport to the paper space and adds appropriate view to gs device (it works fine with dd v1.14):
code:
// pdevice - pointer that setupactivelayoutviews() has returned for this database
odgspaperlayouthelperptr ppshelper = odgspaperlayouthelper::cast(pdevice);
if(ppshelper.get()) // we are in the paper space
{
oddbviewportptr pvp = oddbviewport::createobject();
pvp->setheight(10);
pvp->setwidth(15);
pvp->zoomextents();
odgicontextfordbdatabaseptr pctx = ppshelper->usergicontext();
odgsclientviewinfo viewinfo;
pctx->fillgsclientviewinfo(pvp->objectid(), viewinfo);
odgsviewptr pview = ppshelper->createview(&viewinfo);
ppshelper->addview(pview);
ppshelper->initgsview(pview, pvp);
pview->add(pctx->database()->getmodelspaceid().safeopenobject(), ppshelper->gsmodel());
}