Double buffering technology solves the problem of MFC plotting flicker

The source of the flicker: OnEraseBkgnd The contrast of the image color causes the flicker

How to avoid: the first thing to do is to mask the background refresh. The background refresh is actually in response to the WM_ERASEBKGND message. We add a response to this message in the view class

1. BOOL cmyview::onerasebkgnd (cdc* PDC)
2. {
3. return Cview::onerasebkgnd (PDC);
4. return True  ; Self-processing in OnPaint
5. }

Double buffering technology solves the problem of MFC plotting flicker