api question

does anyone know what api's if any. that will give you what the mouse
is held over on the screen. "the geometry that turns red as you move
around".

thanks in advance

 

I'm afraid it is not available directly, you'll have to do something rather
tricky:
use microsoft's windows API to obtain the mouse pixel position in your
ModelView,
then ModelView::Transform to obtain the XYZ position in model space
then use ModelView::GetEyePoint to define a vector going from your eye
through the obtained point
and finally ModelDoc::RayIntersections+GetRayIntersectionsTopology, quite
complex especially in assemblies, to obtain the desired points.
Another way is to request apisupport to implement this api, and wait a few
years...
Maybe you'd rather stick to selections...