Flickering in GDI regardless of using memory DC and BitBlit

Question

I tried to avoid flickering in GDI by creating a memory DC, loading a empty created bitmap in it, doing all the drawing to memory DC, and at the end BitBlitting to pDC. But yet, the flickering still happens? Why? Is it possible that is related to using EMF-s, or something like that? Thank you.

Answer 1

You need to eliminate all other drawing directly to the screen. The usual culprit is WM_ERASEBKGND. Handle it and do nothing (because you'll put whatever background you want into the offscreen DC)