Hi

at first please forgive me because of my poor English !

i am beginner in qt . i have to make a program to get some data from network and draw it in real time (about 1000 line in second)
but i have a problem. although i use QGLWidget my cpu usage always is too high for drawing these lines (above 60 percent)
my program add these point to a polyline of a pixmap and every 10 msec draw the hole pixmap in QGLWidget

what should i do to decrease CPU usage ??

Thanks