which one does have high performance paintGl or paint Event

[validator]

hi, I want to learn that What is the difference between paintGL and paintEvent method and
which one does have high performance paintGl or paintEvent .

[wysota]

There is no simple answer for this question. Using OpenGL for painting might be faster if you have a hardware accelerated system, but unless you paint things that can benefit from acceleration, the difference might not be noticable.