plPointSize(float) is not working in Qt 4.7.

[mozalincranz]

This means without graphical user interface. This can be done by Qt console application.

[wysota]

So it does work with Qt but not when you display the GL result in a window? I was rather asking you to write a simple GL code without Qt and see if glPointSize() works there. It simply might be a matter of DPI or something similar.