DS> When scrolling through text, using the arrow keys, my program falls
 DS> behind the input buffer, causing the annoying effect of scrolling after
 DS> the key has been released.

 DS> The vertical scroll buttons don't have this problem.

 DS> I thought that the SB msgs may have been combined by OS2, so I used
 DS> WinPostMsg for the vertical arrow keys, to use the SB vertical logic.

Are you drawing for each scroll?  Don't.  Instead,  make sure you are NOT
using a "CS_SYNCPAINT" window,  and scroll & invalidate
(WinScrollWindow/WinInvalidateRect) the window.   PM will be smart enough
to skip any WM_PAINT's that are no longer valid.

Using thie technique, you can even smooth scroll a bitmap.


--- Maximus/2 2.02p1