After building the program when I try to run my GLUT example I get the following.
GLUT: Warning in lt-helloworld: The following is a new check for GLUT 3.0; update your code.
GLUT: Fatal Error in lt-helloworld: redisplay needed for window 1, but no display callback.
I am new to programming under linux, the code is from a Opengl book that I purchessed.
It is at least maybe three years old.
Is there maybe some changes in opening a window with 3.0 ver. under 3.0?
or with callbacks?
You get the error message if you do not have a glutDisplayFunc(redraw) or similar in your program. GLUT has not changed much lately so if your book was good 2 years ago is it still good.