Better handling of cumulative rounding errors.

Change the scroll delta only when the app responds to the PGN_NOTIFY msg.

been selected into the source DC, to work around some X11-imposed
DIBsection implementation deficiencies.

- fix some variable checks

metafile records. Better implementation of EMR_STRETCHDIBITS and
EMR_EXTTEXTOUTW.

IShellLink<A|W>_fnGetArguments, IShellLink<A|W>_fnGetIconLocation.

- Add structures for CBEN_INSERTITEM notify message.

SGML build system; half done, but a good start.

is not the case when building outside the source tree.

Output more debug info on failure.

  strings and crashes with those long strings. Shortened those strings.
- Also driver needs to be "display" for display devices (some other
  programs rely on that info I seem to remember).
- Fixed DSurface::GetSurfaceDesc to not just blindly copy a
  DDSURFACEDESC2 struct over a smaller DDSURFACEDESC one.

Implemented circular buffering for the dinput mouse device.
Mapped the mouse warp on the center of the cooperative window, which
should make windowed games work better in managed mode.

psdrv's DeviceCapabilities should list DMBIN_AUTO as an available
bin.

Added more mappings 32ATo16.

to debug crashes due to overflowing of the debug info's output buffer.

ignored.

- Implement additional WNDPROCs for the Combo and Edit controls to
  handle different functions.
- Implement CBEM_SETCURSEL and CBEM_HASEDITCHANGED.

  WM_DRAWITEM message.
- Set the focused status at the end of the end of the Setfocus routine.
- Flip the order of updating the list box and issuing the WM_NOTIFY
  for CBN_EDITUPDATE to match native.