This seems to happen on some IE versions that decode gzip streams in
urlmon (as opposed to wininet).

This limits the scope of
http://source.winehq.org/git/wine.git/commitdiff/259cd7933612abdef0f88f446589ec489176ce7d
to fix random test failures. This makes the original test questionable,
so if we ever see it failing again, we should simply revert it.

Suggested by Alessandro Pignotti.

Spotted by Marcus Meissner and Coverity.

user32: Don't paint to the surface if the window has a pixel format, regardless of the state of the top parent.

Allow fractions of WHEEL_DELTA to scroll fractions of SPI_GETWHEELSCROLLLINES,
although still only whole lines.  Keep the remainder and apply it to next
event if in same direction.

Allow fractions of WHEEL_DELTA to scroll fractions of SPI_GETWHEELSCROLLLINES,
although still only whole lines.  Keep the remainder and apply it to next
event if in same direction.