This document describes a major problems with creating 3D applications in a graphic library named OpenGL. There are some basic informations about a GLUT library including main advantages and disadvantages and a description of alternative implementations of a GLUT API. Further content is focused on the most familiar graphic libraries for creating user interfaces which should be used to develop the OpenGL applications and with their advantages and disadvantages too. The next part describes a draft of a new GLUT API implementation based on the selected user interface library. Major part of thesis is about implementation of GtkGLUT library. Reader can find this implementation on CD. Last part describes future development plans