Re: ntemacs doesn't update the display immediately when holding some keys down.

[Jason Rumney]

Kevin Yu wrote:
> Hi,
>     ntemacs will update the window when you release the PgDn or PgUp 
> key. This behavior is
> different from emacs22. If transient-mark-mode is active, ntemacs 
> response slowly if holding up
> or down key down. The lag is noticeable.

That the new font backend is slow on Windows is a known problem. I don't 
see any noticeable difference between transient mark on and off, so I 
don't think this is the cause. Rather it is that we have replaced 
drawing code that has been tuned over decades with a completely new set 
of code which was originally written for xft, so is initially tuned for 
that, not for other systems.