Scrolling glitch with HBITMAP BitBlt c++

Question

It renders the pages when you are looking at that page.

The problem is when I scroll, it glitches.

Commenting out the pDC->FillSolidRect code makes the background glitchness, but still has the flickering when scrolling.

I was told to issue 4 FillSolidRect calls for the border strips only or to erase the border in the off-screen device context, but I don't know how.

May anyone supply examples on how to fix this, as it seems I am double buffering just fine?

EDIT: SAME THING HAPPENS IN THE IMAGE HERE: https://i.stack.imgur.com/OyN3V.jpg https://i.stack.imgur.com/LRc96.png

Answer 1

Maybe you can see/adapt the MSDN sample to display a bitmap with scrollbars handling
Example of Scrolling a Bitmap
(I tested it in a C++/Win32 app on Windows 10, it works fine)