Retrieves a running object's current display size.
HRESULT GetExtent(
DWORD dwDrawAspect, //Value indicating object aspect
SIZEL *psizel //Pointer to storage of object size limit
);
This method supports the standard return value E_INVALIDARG, as well as the following:
A container calls IOleObject::GetExtent on a running object to retrieve its current display size. If the container can accommodate that size, it will normally do so because the object, after all, knows what size it should be better than the container does. A container normally makes this call as part of initializing an object.
The display size returned by IOleObject::GetExtent may differ from the size last set by IOleObject::SetExtent because the latter method dictates the object's display space at the time the method is called but does not necessarily change the object's native size, as determined by its application.
Note This method must return the same size as DVASPECT_CONTENT for all the new aspects in DVASPECT2. IViewObject2::GetExtent must do the same thing.
If one of the new aspects is requested in dwAspect, this method can either fail or return the same rectangle as for the DVASPECT_CONTENT aspect.
Because a container can make this call only to a running object, the container must instead call IViewObject2::GetExtent if it wants to get the display size of a loaded object from its cache.
Implementation consists of filling the sizel structure with an object's height and width.
Windows NT: Use version 3.1 or later.
Windows: Use Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in oleidl.h.
DVASPECT, DVASPECT2, IOleObject::SetExtent, IViewObject2::GetExtent