wine/documentation/console
Alexandre Julliard a69b88b2f2 Release 980315
Sun Mar 15 03:46:50 1998  Dimitrie O. Paun  <dimi@mail.cs.toronto.edu>

	* [*/*]
	Fixed some dprintf_ such that there is one and only one
	new line for each dprintf and that new line occurs at the end.
	Transformed some fprintfs into proper debug statements.
	Removed much redundancy from most of the debug statements. The
	redundancy appeared because now the component and function
	name is output automatically. Most debug statements also used to
	output the name of the function.
	All these changes prepared the source to switch completely to
	the new debugging interface.
	For more info, refer to ./documentation/debug-msg

Sat Mar 14 19:45:23 1997  Andreas Mohr <100.30936@germany.net>

	* [misc/shell.c] [if1632/kernel.spec]
	Changed parameters of FUNC004() to fix a crash.
	Not sure if this fix is correct (doc wanted).

	* [windows/user.c] [if1632/user.spec] [include/user.h]
	Implemented UserSeeUserDo.

	* [msdos/int21.c] [include/msdos.h]
	Added "GET LIST OF LISTS" (INT 21/52h).

Sat Mar 14 15:48:02 1998  Douglas Ridgway <ridgway@gmcl.com>

	* [include/windows.h] [relay32/gdi32.spec] [objects/enhmetafile.c]
	Beginnings of enhanced metafile support.

Fri Mar 13 20:53:09 1998  John Richardson <jrichard@zko.dec.com>

	* [win32/console.c]
	Restart interrupted console writes.

Fri Mar 13 18:59:24 1998  Matthew Becker <mbecker@glasscity.net>

	* [*/*.c]
	Updated documentation for API manpages.

	* [windows/dce.c]
	ReleaseDC16: Fixed cast.

	* [include/windows.h] [memory/virtual.c]
	VirtualQuery{Ex} should return DWORD instead of BOOL32.

Fri Mar 13 13:03:06 1998  Marcus Meissner <msmeissn@cip.informatik.uni-erlangen.de>

	* [README][documentation/status/]
	README updated, added lzexpand,version and multimedia
	status notes to new documentation/status directory.

	* [ole/*.c][if1632/typelib.spec]
	Added typelib stubs, several small additions and fixes.

	* [loader/pe_image.c]
	Fixed a small bug (fixup_imports got passed the wrong hModule in a
	remapcase).

	* [loader/signal.c][if1632/signal.c][misc/winsock_dns.c]
	  [loader/module.c]
	Fixed some recursive debugger crashes (caused by invalid FS).

	* [misc/registry.c]
	Two bugs fixed.

Fri Mar 13 04:55:01 1998  David Lee Lambert <lamber45@egr.msu.edu>

	* [include/winnt.h] [include/winnls.h]
	Moved LANG_xxx flags to winnls.h

	* [include/winnls.h]
	Added flags for GetDateFormat(); fixed validity of
	LOCALE_SYSTEM_DEFAULT.

	* [include/windows.h] 
	Added GetTimeFormat() prototypes.

	* [ole/ole2nls.c]
	Implemented ASCII date- and time-functions,  using an
	optimized common core;  added stubs for Unicode versions;  
	started work on a Unicode core.

	* [AUTHORS]
	Added my name.

Mon Mar  9 20:10:15 1998  Eric Kohl <ekohl@abo.rhein-zeitung.de>

	* [relay32/comctl32.spec] [include/imagelist.h]
	  [include/commctrl.h] [misc/imagelist.c] [misc/Makefile.in]
	First attempt at implementing ImageLists.

Sun Mar  8 20:19:49 1998  Uwe Bonnes  <bon@elektron.ikp.physik.tu-darmstadt.de>

	* [files/dos_fs.c] [configure.in]
	Try to get FileTimeToLocalFileTime,FileTimeToSystemTime and
	SystemTimeToFileTime right.
	Use timegm() where available.

	* [misc/lstr.c]
	Fix an off by one error in FormatMessage and handle the case 
	when args = NULL (used by programs to get the length of the 
	string).

	* [win32/console.c]
	Actual display a per-process Title string, better working
	attempt for WriteConsole32W and ReadConsole32W.

Fri Mar  6 20:33:45 1998  Slaven Rezic  <eserte@cs.tu-berlin.de>

	* [include/config.h.in][configure.in][multimedia/audio.c]
	  [multimedia/dsound.c]
	Added check for FreeBSD sound system.

Sun Mar  1 17:40:10 1998  Jason Schonberg <schon@mti.sgi.com>

	* [controls/edit.c] [include/ole.h] [include/shlobj.h]
	Removed final commas in enum types.

Mon Feb 23 07:52:18 1998  Luiz Otavio L. Zorzella  <zorzella@nr.conexware.com>

	* [multimedia/time.c]
	Workaround to avoid infinite recursion inside timeGetTime.

	* [multimedia/audio.c]
	WODM_GETNUMDEVS and WIDM_GETNUMDEVS only return 1 now if the
	SOUND_DEV can be opened, or if it's busy.
1998-03-15 20:29:56 +00:00

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Console - First Pass
--------------------
Consoles are just xterms created with the -Sxxn switch.
A pty is opened and the master goes to the xterm side
and the slave is held by the wine side. The console
itself it turned into a few HANDLE32s and is set
to the STD_*_HANDLES.
It is possible to use the WriteFile and ReadFile commands
to write to a win32 console. To accomplish this, all K32OBJs
that support I/O have a read and write function pointer.
So, WriteFile calls K32OBJ_WriteFile which calls the K32OBJ's
write function pointer, which then finally calls write.
[this paragraph is now out of date]
If the command line console is to be inheirited or
a process inherits it's parents console (-- can that happen???),
the console is created at process init time via PROCESS_InheritConsole.
The 0, 1, and 2 file descriptors are duped to be the
STD_*_HANDLES in this case. Also in this case a flag is set
to indicate that the console comes from the parent process or
command line.
If a process doesn't have a console at all, it's
pdb->console is set to NULL. This helps indicate when
it is possible to create a new console (via AllocConsole).
When FreeConsole is called, all handles that the process has
open to the console are closed. Like most k32objs, if the
console's refcount reaches zero, its k32obj destroy function
is called. The destroy kills the xterm if one was open.
Also like most k32 objects, we assume that (K32OBJ) header is the
first field so the casting (from K32OBJ *to CONSOLE *)
works correctly.
FreeConsole is called on process exit (in ExitProcess) if
pdb->console is not NULL.
BUGS
----
Console processes do not inherit their parent's handles. I think
there needs to be two cases, one where they have to inherit
the stdin/stdout/stderr from unix, and one where they have to
inherit from another windows app.
SetConsoleMode -- UNIX only has ICANON and various ECHOs
to play around with for processing input. Win32 has
line-at-a-time processing, character processing, and
echo. I'm putting together an intermediate driver
that will handle this (and hopefully won't be any more
buggy then the NT4 console implementation).
================================================================
experimentation with NT4 yields that:
WriteFile
---------
o does not truncate file on 0 length write
o 0 length write or error on write changes numcharswritten to 0
o 0 length write returns TRUE
o works with console handles
_lwrite
-------
o does truncate/expand file at current position on 0 length write
o returns 0 on a zero length write
o works with console handles (typecasted)
WriteConsole
------------
o expects only console handles
SetFilePointer
--------------
o returns -1 (err 6) when used with a console handle
FreeConsole
-----------
o even when all the handles to it are freed, the win32 console
stays visible, the only way I could find to free it
was via the FreeConsole
Is it possible to interrupt win32's FileWrite? I'm not sure.
It may not be possible to interrupt any system calls.