@kickvb thanks now it works but this is not really that what I'm searching for cause the lines etc are only in the view and they can't be drawn behind an other mesh.But I've found this http://www.crystalspace3d.org/docs/online/1.4/manual/MeshObject-Spr2D.html#0 and it seems to be that what Im searching for but the documentation show's only how to implemented it in a map file and not with Cs and C++.Could you explain me how to do it ?

@kickvb thanks for your reply.But how I draw a texture with csPen ? I can't find a tutorial about it.

Hello I want to create a simple Billboard on a specific Position like on the Map flarge(the Crystal space logo) but how i do this.I only found this http://www.crystalspace3d.org/docs/online/1.4/manual/Mazing-Game-Class.html#0 but this create a lot of Billboards and they are spreading around and I don't want that.I hope you understand what i mean .