Details of Wine's Low-level Implementation...
Wine now needs to know about your keyboard layout. This requirement comes from a need from many apps to have the correct scancodes available, since they read these directly, instead of just taking the characters returned by the X server. This means that Wine now needs to have a mapping from X keys to the scancodes these programs expect.
On startup, Wine will try to recognize the active X layout by seeing if it matches any of the defined tables. If it does, everything is alright. If not, you need to define it.
To do this, open the file dlls/x11drv/keyboard.c and take a look at the existing tables. Make a backup copy of it, especially if you don't use CVS.
What you really would need to do, is find out which scancode
each key needs to generate. Find it in the
main_key_scan
table, which looks like
this:
static const int main_key_scan[MAIN_LEN] = { /* this is my (102-key) keyboard layout, sorry if it doesn't quite match yours */ 0x29,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D, 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B, 0x1E,0x1F,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x2B, 0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35, 0x56 /* the 102nd key (actually to the right of l-shift) */ };
Next, assign each scancode the characters imprinted on the keycaps. This was done (sort of) for the US 101-key keyboard, which you can find near the top in keyboard.c. It also shows that if there is no 102nd key, you can skip that.
However, for most international 102-key keyboards, we have
done it easy for you. The scancode layout for these already
pretty much matches the physical layout in the
main_key_scan
, so all you need to do is
to go through all the keys that generate characters on your
main keyboard (except spacebar), and stuff those into an
appropriate table. The only exception is that the 102nd key,
which is usually to the left of the first key of the last line
(usually Z), must be placed on a separate
line after the last line.
For example, my Norwegian keyboard looks like this
§ ! " # ¤ % & / ( ) = ? ` Back- | 1 2@ 3£ 4$ 5 6 7{ 8[ 9] 0} + \´ space Tab Q W E R T Y U I O P Å ^ ¨~ Enter Caps A S D F G H J K L Ø Æ * Lock ' Sh- > Z X C V B N M ; : _ Shift ift < , . - Ctrl Alt Spacebar AltGr Ctrl
Note the 102nd key, which is the <> key, to the left of Z. The character to the right of the main character is the character generated by AltGr.
This keyboard is defined as follows:
static const char main_key_NO[MAIN_LEN][4] = { "|§","1!","2\"@","3#£","4¤$","5%","6&","7/{","8([","9)]","0=}","+?","\\´", "qQ","wW","eE","rR","tT","yY","uU","iI","oO","pP","åÅ","¨^~", "aA","sS","dD","fF","gG","hH","jJ","kK","lL","øØ","æÆ","'*", "zZ","xX","cC","vV","bB","nN","mM",",;",".:","-_", "<>" };
Except that " and \ needs to be quoted with a backslash, and that the 102nd key is on a separate line, it's pretty straightforward.
After you have written such a table, you need to add it to the
main_key_tab[]
layout index table. This
will look like this:
static struct { WORD lang, ansi_codepage, oem_codepage; const char (*key)[MAIN_LEN][4]; } main_key_tab[]={ ... ... {MAKELANGID(LANG_NORWEGIAN,SUBLANG_DEFAULT), 1252, 865, &main_key_NO}, ...
After you have added your table, recompile Wine and test that it works. If it fails to detect your table, try running
wine --debugmsg +key,+keyboard >& key.log
and look in the resulting key.log file to find the error messages it gives for your layout.
Note that the LANG_*
and
SUBLANG_*
definitions are in
include/winnls.h, which you might need to
know to find out which numbers your language is assigned, and
find it in the debugmsg output. The numbers will be
(SUBLANG * 0x400 + LANG), so, for example
the combination LANG_NORWEGIAN (0x14) and
SUBLANG_DEFAULT (0x1) will be (in hex)
14 + 1*400 = 414, so since I'm Norwegian, I
could look for 0414 in the debugmsg output
to find out why my keyboard won't detect.
Once it works, submit it to the Wine project. If you use CVS, you will just have to do
cvs -z3 diff -u dlls/x11drv/keyboard.c > layout.diff
from your main Wine directory, then submit
layout.diff to
<wine-patches@winehq.org>
along with a brief note
of what it is.
If you don't use CVS, you need to do
diff -u the_backup_file_you_made dlls/x11drv/keyboard.c > layout.diff
and submit it as explained above.
If you did it right, it will be included in the next Wine release, and all the troublesome programs (especially remote-control programs) and games that use scancodes will be happily using your keyboard layout, and you won't get those annoying fixme messages either.