Introduction - If you have any usage issues, please Google them yourself
1. Zoom out,zoom in and pan the scene.
2. Draw the standard primiry like cylinder in ambiguous direction.
3. Draw the 3-D Mesh in a simple way.
PanningZoomingAndRotationInOpenGL\Panning zooming and rotation in OpenGL - CodeGuru.mht
.................................\panzoomrot.zip
PanningZoomingAndRotationInOpenGL