- added SetColorKey callback for already loaded textures

virtual methods to implement the COM interfaces in C++.

1st call. Addition of instance handling to DdeCreateStringHandleA,
DdeCreateStringHandleW, RemoveHSZNodes, FreeAndRemoveHSZNodes.  1st
cut implementation of DdeUnitialize, move of internal structure defs
in from ddeml.h. Removed non-ANSI comment.

and added spec for DdeQueryConfInfo and DdeQueryConvInfo16.

Fixed memory leaks in mixerOpen16/mixerClose,
midiOutOpen16/midiOutClose16, waveInOpen16/waveInClose16,
midiInOpen16/midiInClose16.

DefMouseEventProc.

WM_CREATE messages.

Moved _lcreat16_uniq to int21.c

Includes added or removed where necessary.
Win16 functions replaced with their Win32 counterparts. Comments added
where it was impossible.
CALLBACK added where necessary. Some declarations fixed.
Constructs like "#if WINDOWS" corrected. Using "#ifdef __unix__" instead.
DlgProc in hello3 uses EndDialog() instead of DestroyWindow().
Listbox enabled in hello3.

the dead key mapping stuff to the actual mapping code too.  Prettied
up the fixme message. Added a check where if the keys of two layouts
match exactly, the one with the best-matching keycode order is chosen,
so that the QWERTY and Dvorak layouts can be distinguished.

WIN_ReleaseWndPtr.

application.
Also fixed some bugs in dce.c

- "make clean" omitted some include subdirs

mode go through window manager, small bugfixes for menu and window
code, extended clipboard driver model to handle formats other than
text.

true for multiline controls too, as my tests show.