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|
/***************************************************************************
* *
* MODULE : nt_keycd.c *
* *
* PURPOSE : Convert a windows key message to a PC keyboard number *
* *
* FUNCTIONS : KeyMsgToKeyCode() *
* *
****************************************************************************/
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include "windows.h"
//
// OEM Scancode to (ie Scancode set 1) to keynum table.
// Somehow this has to end up being loaded rather than compiled in...
//
#define UNDEFINED 0
/*@ACW=======================================================================
Microsoft now use scan code set 1 as their base scan code set. This means that
we had to change ours also. Not only that, two tables are needed now: one to
hold the regular keyset, the other to hold the ENHANCED key options. Scan code
set 1 differs to scan code set 3 in that some scan codes are the same for
different keystrokes. So when an enhanced bit is set in the KEY_EVENT_RECORD.
dwControlKeyState, a second (very sparse) table is substituted for the regular
one.
A small, teensy, weensy detail... All the key numbers are mapped to different
scancode values for the regular keys just to make life a little more fun!
============================================================================*/
BYTE Scan1ToKeynum[] =
{
// Keynum Scancode US encoding
UNDEFINED, // 0x0
110, // 0x1 Escape
2, // 0x2 1 !
3, // 0x3 2 @
4, // 0x4 3 #
5, // 0x5 4 $
6, // 0x6 5 %
7, // 0x7 6 ^
8, // 0x8 7 &
9, // 0x9 8 *
10, // 0xa 9 (
11, // 0xb 0 )
12, // 0xc - _
13, // 0xd = +
15, // 0xe Backspace
16, // 0xf Tab
17, // 0x10 q Q
18, // 0x11 w W
19, // 0x12 e E
20, // 0x13 r R
21, // 0x14 t T
22, // 0x15 y Y
23, // 0x16 u U
24, // 0x17 i I
25, // 0x18 o O
26, // 0x19 p P
27, // 0x1a [ {
28, // 0x1b ] }
43, // 0x1c Enter
58, // 0x1d Left Control
31, // 0x1e a A
32, // 0x1f s S
33, // 0x20 d D
34, // 0x21 f F
35, // 0x22 g G
36, // 0x23 h H
37, // 0x24 j J
38, // 0x25 k K
39, // 0x26 l L
40, // 0x27 ; :
41, // 0x28 ' "
1, // 0x29 ` ~
44, // 0x2a Left Shift
42, // 0x2b \ | or International Key UK = ~ #
46, // 0x2c z Z
47, // 0x2d x X
48, // 0x2e c C
49, // 0x2f v V
50, // 0x30 b B
51, // 0x31 n N
52, // 0x32 m M
53, // 0x33 , <
54, // 0x34 . >
55, // 0x35 / ?
57, // 0x36 Right Shift (see extended table)
100, // 0x37 Keypad *
60, // 0x38 Left Alt
61, // 0x39 Space
30, // 0x3a Caps Lock
112, // 0x3b F1
113, // 0x3c F2
114, // 0x3d F3
115, // 0x3e F4
116, // 0x3f F5
117, // 0x40 F6
118, // 0x41 F7
119, // 0x42 F8
120, // 0x43 F9
121, // 0x44 F10
126, // 0x45 Break Key
125, // 0x46 Scroll Lock
91, // 0x47 Keypad Home 7
96, // 0x48 Keypad Up 8
101, // 0x49 Keypad Pg Up
105, // 0x4a Keypad -
92, // 0x4b Keypad Left 4
97, // 0x4c Keypad 5
102, // 0x4d Keypad Right 6
106, // 0x4e Keypad +
93, // 0x4f Keypad End 1
98, // 0x50 Keypad Down 2
103, // 0x51 Keypad Pg Down 3
99, // 0x52 Keypad Ins 0
104, // 0x53 Keypad Del .
UNDEFINED, // 0x54
UNDEFINED, // 0x55
45, // 0x56 International Key UK = \ |
122, // 0x57 F11
123, // 0x58 F12
UNDEFINED, // 0x59
UNDEFINED, // 0x5a
UNDEFINED, // 0x5b
UNDEFINED, // 0x5c
UNDEFINED, // 0x5d
UNDEFINED, // 0x5e
UNDEFINED, // 0x5f
UNDEFINED, // 0x60
UNDEFINED, // 0x61
UNDEFINED, // 0x62
UNDEFINED, // 0x63
UNDEFINED, // 0x64
UNDEFINED, // 0x65
UNDEFINED, // 0x66
UNDEFINED, // 0x67
UNDEFINED, // 0x68
UNDEFINED, // 0x69
UNDEFINED, // 0x6a
UNDEFINED, // 0x6b
UNDEFINED, // 0x6c
UNDEFINED, // 0x6d
UNDEFINED, // 0x6e
UNDEFINED, // 0x6f
UNDEFINED, // 0x70
UNDEFINED, // 0x71
UNDEFINED, // 0x72
56, // 0x73 Brazilian ABNT / ?
UNDEFINED, // 0x74
UNDEFINED, // 0x75
UNDEFINED, // 0x76
UNDEFINED, // 0x77
UNDEFINED, // 0x78
UNDEFINED, // 0x79
UNDEFINED, // 0x7a
UNDEFINED, // 0x7b
94, // 0x7c Extended kbd (IBM 122 key)
14, // 0x7d Extended kbd (IBM 122 key)
107, // 0x7e Brazilian ABNT numpad .
UNDEFINED, // 0x7f
UNDEFINED, // 0x80
UNDEFINED, // 0x81
UNDEFINED, // 0x82
UNDEFINED, // 0x83
UNDEFINED // 0x84
};
/*@ACW====================================================================
Note that in the following extended keyboard table, the shift key values
have also been given an entry because these keys can be used as modifiers
for the other extended keys.
========================================================================*/
BYTE Scan1ToKeynumExtended[] =
{
// Keynum Scancode US encoding
31, // 0x0
UNDEFINED, // 0x1
UNDEFINED, // 0x2
UNDEFINED, // 0x3
UNDEFINED, // 0x4
UNDEFINED, // 0x5
UNDEFINED, // 0x6
UNDEFINED, // 0x7
UNDEFINED, // 0x8
UNDEFINED, // 0x9
UNDEFINED, // 0xa
UNDEFINED, // 0xb
UNDEFINED, // 0xc
UNDEFINED, // 0xd
UNDEFINED, // 0xe
UNDEFINED, // 0xf
UNDEFINED, // 0x10
UNDEFINED, // 0x11
UNDEFINED, // 0x12
UNDEFINED, // 0x13
UNDEFINED, // 0x14
UNDEFINED, // 0x15
UNDEFINED, // 0x16
UNDEFINED, // 0x17
UNDEFINED, // 0x18
UNDEFINED, // 0x19
UNDEFINED, // 0x1a
UNDEFINED, // 0x1b
108, // 0x1c Extended 1c Num Enter
64, // 0x1d Extended 1d Right Ctrl
UNDEFINED, // 0x1e
UNDEFINED, // 0x1f
UNDEFINED, // 0x20
UNDEFINED, // 0x21
UNDEFINED, // 0x22
UNDEFINED, // 0x23
UNDEFINED, // 0x24
UNDEFINED, // 0x25
UNDEFINED, // 0x26
UNDEFINED, // 0x27
UNDEFINED, // 0x28
UNDEFINED, // 0x29
44, // 0x2a Extended 2a left shift
UNDEFINED, // 0x2b
UNDEFINED, // 0x2c
UNDEFINED, // 0x2d
UNDEFINED, // 0x2e
UNDEFINED, // 0x2f
UNDEFINED, // 0x30
UNDEFINED, // 0x31
UNDEFINED, // 0x32
UNDEFINED, // 0x33
UNDEFINED, // 0x34
95, // 0x35 Extended 35 keypad /
57, // 0x36 Extended 36 right shift
124, // 0x37 PrintScreen
62, // 0x38 Extended 38 right alt
UNDEFINED, // 0x39
UNDEFINED, // 0x3a
UNDEFINED, // 0x3b
UNDEFINED, // 0x3c
UNDEFINED, // 0x3d
UNDEFINED, // 0x3e
UNDEFINED, // 0x3f
UNDEFINED, // 0x40
UNDEFINED, // 0x41
UNDEFINED, // 0x42
UNDEFINED, // 0x43
UNDEFINED, // 0x44
90, // 0x45 Num Lock
126, // 0x46
80, // 0x47 Extended 47 Home
83, // 0x48 Extended 48 Up
85, // 0x49 Extended 49 Page up
UNDEFINED, // 0x4a
79, // 0x4b Extended 4b Left
UNDEFINED, // 0x4c
89, // 0x4d Extended 4d Right
UNDEFINED, // 0x4e
81, // 0x4f Extended 4f End
84, // 0x50 Extended 50 Down
86, // 0x51 Extended 51 Page Down
75, // 0x52 Extended 52 Insert
76, // 0x53 Extended 53 Delete
};
/*
* Table for translating BiosBuffer scan codes with special
* NULL ascii chars, and their associated control flags
* If it is not in this table The Bios scan code should
* be the same as the win32 Scan code.
*/
#define FIRST_NULLCHARSCAN 0x54
#define LAST_NULLCHARSCAN 0xa6
typedef struct _NullAsciiCharScan {
WORD wWinSCode;
DWORD dwControlState;
} NULLCHARSCAN;
NULLCHARSCAN aNullCharScan[] =
{
// WinSCode dwControlState BiosSCode Keys
0x3b, SHIFT_PRESSED, // 0x54 Shift+F1
0x3c, SHIFT_PRESSED, // 0x55 Shift+F2
0x3d, SHIFT_PRESSED, // 0x56 Shift+F3
0x3e, SHIFT_PRESSED, // 0x57 Shift+F4
0x3f, SHIFT_PRESSED, // 0x58 Shift+F5
0x40, SHIFT_PRESSED, // 0x59 Shift+F6
0x41, SHIFT_PRESSED, // 0x5a Shift+F7
0x42, SHIFT_PRESSED, // 0x5b Shift+F8
0x43, SHIFT_PRESSED, // 0x5c Shift+F9
0x44, SHIFT_PRESSED, // 0x5d Shift+F10
0x3b, LEFT_CTRL_PRESSED, // 0x5e Ctrl+F1
0x3c, LEFT_CTRL_PRESSED, // 0x5f Ctrl+F2
0x3d, LEFT_CTRL_PRESSED, // 0x60 Ctrl+F3
0x3e, LEFT_CTRL_PRESSED, // 0x61 Ctrl+F4
0x3f, LEFT_CTRL_PRESSED, // 0x62 Ctrl+F5
0x40, LEFT_CTRL_PRESSED, // 0x63 Ctrl+F6
0x41, LEFT_CTRL_PRESSED, // 0x64 Ctrl+F7
0x42, LEFT_CTRL_PRESSED, // 0x65 Ctrl+F8
0x43, LEFT_CTRL_PRESSED, // 0x66 Ctrl+F9
0x44, LEFT_CTRL_PRESSED, // 0x67 Ctrl+F10
0x3b, LEFT_ALT_PRESSED, // 0x68 Alt+F1
0x3c, LEFT_ALT_PRESSED, // 0x69 Alt+F2
0x3d, LEFT_ALT_PRESSED, // 0x6a Alt+F3
0x3e, LEFT_ALT_PRESSED, // 0x6b Alt+F4
0x3f, LEFT_ALT_PRESSED, // 0x6c Alt+F5
0x40, LEFT_ALT_PRESSED, // 0x6d Alt+F6
0x41, LEFT_ALT_PRESSED, // 0x6e Alt+F7
0x42, LEFT_ALT_PRESSED, // 0x6f Alt+F8
0x43, LEFT_ALT_PRESSED, // 0x70 Alt+F9
0x44, LEFT_ALT_PRESSED, // 0x71 Alt+F10
0, 0, // 0x72 Ctrl+PrtSc
0x4b, LEFT_CTRL_PRESSED, // 0x73 Ctrl+Left
0x4d, LEFT_CTRL_PRESSED, // 0x74 Ctrl+Right
0x4f, LEFT_CTRL_PRESSED, // 0x75 Ctrl+End
0x51, LEFT_CTRL_PRESSED, // 0x76 Ctrl+PgDn
0x47, LEFT_CTRL_PRESSED, // 0x77 Ctrl+Home
0x2, LEFT_ALT_PRESSED, // 0x78 Alt+1
0x3, LEFT_ALT_PRESSED, // 0x79 Alt+2
0x4, LEFT_ALT_PRESSED, // 0x7a Alt+3
0x5, LEFT_ALT_PRESSED, // 0x7b Alt+4
0x6, LEFT_ALT_PRESSED, // 0x7c Alt+5
0x7, LEFT_ALT_PRESSED, // 0x7d Alt+6
0x8, LEFT_ALT_PRESSED, // 0x7e Alt+7
0x9, LEFT_ALT_PRESSED, // 0x7f Alt+8
0xa, LEFT_ALT_PRESSED, // 0x80 Alt+9
0xb, LEFT_ALT_PRESSED, // 0x81 Alt+0
0xc, LEFT_ALT_PRESSED, // 0x82 Alt+-
0xd, LEFT_ALT_PRESSED, // 0x83 Alt+=
0x49, LEFT_CTRL_PRESSED, // 0x84 Ctrl+PgUp
0, 0, // 0x85 ?????
0, 0, // 0x86 ?????
0x85, SHIFT_PRESSED, // 0x87 Shift+F11
0x86, SHIFT_PRESSED, // 0x88 Shift+F12
0x85, LEFT_CTRL_PRESSED, // 0x89 Ctrl+F11
0x86, LEFT_CTRL_PRESSED, // 0x8a Ctrl+F12
0x85, LEFT_ALT_PRESSED, // 0x8b Alt+F11
0x86, LEFT_ALT_PRESSED, // 0x8c Alt+F12
0x48, LEFT_CTRL_PRESSED, // 0x8d Ctrl+Up
0x4a, LEFT_CTRL_PRESSED, // 0x8e Ctrl+-
0x4c, LEFT_CTRL_PRESSED, // 0x8f Ctrl+5
0x4e, LEFT_CTRL_PRESSED, // 0x90 Ctrl++
0x50, LEFT_CTRL_PRESSED, // 0x91 Ctrl+Down
0x52, LEFT_CTRL_PRESSED, // 0x92 Ctrl+Ins
0x53, LEFT_CTRL_PRESSED, // 0x93 Ctrl+Del
0, 0, // 0x94 ?????
0, 0, // 0x95 ?????
0, 0, // 0x96 ?????
0x47, LEFT_ALT_PRESSED, // 0x97 Alt+Home
0x48, LEFT_ALT_PRESSED, // 0x98 Alt+Up
0x49, LEFT_ALT_PRESSED, // 0x99 Alt+PgUp
0, 0, // 0x9a ?????
0x4b, LEFT_ALT_PRESSED, // 0x9b Alt+Left
0, 0, // 0x9c ?????
0x4d, LEFT_ALT_PRESSED, // 0x9d Alt+Right
0, 0, // 0x9e ?????
0x4f, LEFT_ALT_PRESSED, // 0x9f Alt+End
0x50, LEFT_ALT_PRESSED, // 0xa0 Alt+Down
0x51, LEFT_ALT_PRESSED, // 0xa1 Alt+PgDn
0x52, LEFT_ALT_PRESSED, // 0xa2 Alt+Ins
0x53, LEFT_ALT_PRESSED, // 0xa3 Alt+Del
0, 0, // 0xa4 ?????
0xf, LEFT_ALT_PRESSED, // 0xa5 Alt+Tab
0x1c, LEFT_ALT_PRESSED // 0xa6 Alt+Enter
};
WORD aNumPadSCode[] = // index by VK_NUMPAD0 as zero offset
{
0x52, // VK_NUMPAD0 - 60
0x4f, // VK_NUMPAD1 61
0x50, // VK_NUMPAD2 62
0x51, // VK_NUMPAD3 63
0x4b, // VK_NUMPAD4 64
0x4c, // VK_NUMPAD5 65
0x4d, // VK_NUMPAD6 66
0x47, // VK_NUMPAD7 67
0x48, // VK_NUMPAD8 68
0x49 // VK_NUMPAD9 69
};
/****************************************************************************
* *
* FUNCTIONS : BYTE KeyMsgToKeyCode(WORD vKey, DWORD KeyFlags) *
* *
* PURPOSE : Convert a windows key message to a PC keyboard number *
* Return 0 if not mapped. *
* *
****************************************************************************/
BYTE KeyMsgToKeyCode(PKEY_EVENT_RECORD KeyEvent)
{
/*:::::::::::::::::::::::::::::::::::: do we need the enhanced key set ? */
if(!(KeyEvent->dwControlKeyState & ENHANCED_KEY))
{
/*............................... the regular keyset is what we need */
return KeyEvent->wVirtualScanCode > sizeof(Scan1ToKeynum)
? 0
: Scan1ToKeynum[KeyEvent->wVirtualScanCode];
}
else
{
/*.................................. we do need the extended key set */
return KeyEvent->wVirtualScanCode > sizeof(Scan1ToKeynumExtended)
? 0
: Scan1ToKeynumExtended[KeyEvent->wVirtualScanCode];
}
}
/* BiosKeyToInputRecord
*
* Translates Bios Buffer Keys to win32 console type of key_events.
*
* entry: pKeyEvent - addr of KEY_EVENT structure
* pKeyEvent->uChar.AsciiChar - Bios Buffer character
* pKeyEvent->wVirtualScanCode - Bios Buffer scan code
*
* exit: all KEY_EVENT fields are filled in.
* The AsciiChar has been converted to unicode
*
* If a character is not in the current keyboard layout
* we return TRUE with: dwControlKeyState |= NUMLOCK_ON;
* wVirtualKeyCode = VK_MENU;
* wVirtualScanCode = 0x38;
* OemChar (not unicode)
*/
BOOL BiosKeyToInputRecord(PKEY_EVENT_RECORD pKeyEvent)
{
USHORT KeyState;
NTSTATUS Status;
UCHAR AsciiChar=(UCHAR)pKeyEvent->uChar.AsciiChar;
WCHAR UnicodeChar;
pKeyEvent->wRepeatCount = 1;
pKeyEvent->wVirtualKeyCode = 0;
pKeyEvent->dwControlKeyState = 0;
// we treat 0xF0 Ascii Char as NULL char just like the bios
if (AsciiChar == 0xF0 && pKeyEvent->wVirtualScanCode) {
AsciiChar = 0;
}
// convert oem char to unicode character, cause we can do it more
// efficiently than console (already going thru char by char).
Status = RtlOemToUnicodeN(&UnicodeChar,
sizeof(WCHAR),
NULL,
&AsciiChar,
1 );
if (!NT_SUCCESS(Status)) {
return FALSE;
}
// Convert BiosBuffer ScanCode for NULL asciiChars to
// windows scan code
if ( (!AsciiChar) &&
pKeyEvent->wVirtualScanCode >= FIRST_NULLCHARSCAN &&
pKeyEvent->wVirtualScanCode <= LAST_NULLCHARSCAN )
{
pKeyEvent->wVirtualScanCode -= FIRST_NULLCHARSCAN;
pKeyEvent->dwControlKeyState = aNullCharScan[pKeyEvent->wVirtualScanCode].dwControlState;
pKeyEvent->wVirtualScanCode = aNullCharScan[pKeyEvent->wVirtualScanCode].wWinSCode;
}
// Some CTRL-Extended keys have special bios scan codes
// These scan codes are not recognized by windows. Change
// to a windows compatible scan code, and set CTRL flag
else if (AsciiChar == 0xE0 && pKeyEvent->wVirtualScanCode) {
pKeyEvent->dwControlKeyState = ENHANCED_KEY;
if (AsciiChar == 0xE0) {
pKeyEvent->dwControlKeyState |= LEFT_CTRL_PRESSED;
switch (pKeyEvent->wVirtualScanCode) {
case 0x73: pKeyEvent->wVirtualScanCode = 0x4B;
break;
case 0x74: pKeyEvent->wVirtualScanCode = 0x4D;
break;
case 0x75: pKeyEvent->wVirtualScanCode = 0x4f;
break;
case 0x76: pKeyEvent->wVirtualScanCode = 0x51;
break;
case 0x77: pKeyEvent->wVirtualScanCode = 0x47;
break;
case 0x84: pKeyEvent->wVirtualScanCode = 0x49;
break;
case 0x8D: pKeyEvent->wVirtualScanCode = 0x48;
break;
case 0x91: pKeyEvent->wVirtualScanCode = 0x50;
break;
case 0x92: pKeyEvent->wVirtualScanCode = 0x52;
break;
case 0x93: pKeyEvent->wVirtualScanCode = 0x53;
break;
default: // the rest should have correct scan codes
// but not CTRL bit
pKeyEvent->dwControlKeyState &= ~LEFT_CTRL_PRESSED;
}
}
AsciiChar = 0;
UnicodeChar = 0;
}
// The keypad "/" and the keypad "enter" special cases
else if (pKeyEvent->wVirtualScanCode == 0xE0) {
pKeyEvent->dwControlKeyState = ENHANCED_KEY;
if (AsciiChar == 0x2f) { // is keypad "/"
pKeyEvent->wVirtualScanCode = 0x35;
pKeyEvent->wVirtualKeyCode = VK_DIVIDE;
}
else { // is keypad enter chars == 0xd, 0xa
pKeyEvent->wVirtualScanCode = 0x1C;
pKeyEvent->wVirtualKeyCode = VK_RETURN;
if (AsciiChar == 0xA) {
pKeyEvent->dwControlKeyState |= LEFT_CTRL_PRESSED;
}
}
}
// get control flags\VirtualKey for normal ascii characters,
else if (AsciiChar &&
pKeyEvent->wVirtualScanCode != 0x01 && // ESC
pKeyEvent->wVirtualScanCode != 0x0E && // Backspace
pKeyEvent->wVirtualScanCode != 0x0F && // Tab
pKeyEvent->wVirtualScanCode != 0x1C ) // Enter
{
KeyState = (USHORT) VkKeyScanW(UnicodeChar);
if (KeyState == 0xFFFF) {
/* fail means not a physical key (ALT-NUMPAD entry sequence)
* Proper emeulation requires that we generate it by doing
* ALT-NUMLOCK-xxx-NUMLOCK-ALT.
* We shortcut this by sending console, the final key event.
* hoping that apps won't notice the difference.
*/
pKeyEvent->wVirtualScanCode = 0;
pKeyEvent->wVirtualKeyCode = VK_MENU; // dummy opt
}
else {
pKeyEvent->wVirtualKeyCode = (WORD)LOBYTE(KeyState);
if (KeyState & 0x100)
pKeyEvent->dwControlKeyState |= SHIFT_PRESSED;
if (KeyState & 0x200)
pKeyEvent->dwControlKeyState |= LEFT_CTRL_PRESSED;
if (KeyState & 0x400)
pKeyEvent->dwControlKeyState |= LEFT_ALT_PRESSED;
// some keys get mapped to different scan codes (NUMPAD)
// so get matching scan code
pKeyEvent->wVirtualScanCode = MapVirtualKey(pKeyEvent->wVirtualKeyCode,0);
}
}
// Get a Virtual KeyCode, if we don't have one yet
if (!pKeyEvent->wVirtualKeyCode) {
pKeyEvent->wVirtualKeyCode = MapVirtualKey(pKeyEvent->wVirtualScanCode,3);
if (!pKeyEvent->wVirtualKeyCode) {
return FALSE;
}
}
pKeyEvent->uChar.UnicodeChar = UnicodeChar;
return TRUE;
}
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