Re: MS Windows double buffering

[Po Lu <luangruo@yahoo.com>]

Eli Zaretskii <eliz@gnu.org> writes:

> Then the flicker of the window parts of the frame (the tool bar, the
> text area, the scroll bar, and the mode line) don't flicker at all,
> but the menu bar and the title bar still do, albeit very
> insignificantly.  Overall, the result is much better.

Thanks.  Can you try to find out what type of message is being processed
when the call to `w32_show_back_buffer' in that piece of code is made?

> Just evaluating it in "emacs -Q"?  I see no flickering at all, with or
> without double-buffering.

Without double-buffering, the entire display flickers for me, while
there is no flicker at all with double buffering.

I think there is something very system-specific about exactly which
situations different people see flickering under, like on X, where some
people could not see flicker at all, while for others Emacs was
basically unusable without double buffering.