This page shows how to put in two base views. If you want to create a projected view from the first base view, the last part of the code becomes:
// Now create our two views, a base and a projected view
CComVariant varEmpty ;
CComPtr<Point2d> pPt1;
pTrGeom->CreatePoint2d(10.0,10.0,&pPt1);
// The base view...
CComPtr<DrawingView> pBaseView1 ;
pViews->AddBaseView (pDoc, // what to show
pPt1, // corner of view
kViewScale1, // size, scale, of view
kBottomViewOrientation, // from where to view the doc
kHiddenLineDrawingViewStyle, // DrawingViewStyleEnum
L"10-10", // name of created view
varEmpty,varEmpty, // unused in this case
&pBaseView1) ; // the created view
// In this case we create a projected view which has the base view as
// the parent and which is to the right of the parent. Inventor itself will
// sort out the projection. (compare pPt1 and pPt2)
CComPtr<Point2d> pPt2;
pTrGeom->CreatePoint2d(15.0,10.0,&pPt2);
CComPtr<DrawingView> pProjectedView ;
pViews->AddProjectedView (pBaseView1, // parent view
pPt2, // center of projected view
varEmpty, // empty, so same scale as parent
&pProjectedView) ; // resulting projected view
Here is a BaseView and a ProjectedView:
