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Special case handling of : Shift + arrow, shift + home, ... 

X returns a char for it, but Windows doesn't. Ignore X char.
Also added some documentation.
This commit is contained in:
David Faure 1998-11-14 16:47:54 +00:00 committed by Alexandre Julliard
parent 12392cd220
commit f64b70e558
1 changed files with 40 additions and 10 deletions
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50
windows/keyboard.c
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@ -87,6 +87,7 @@ static const int modifier_key[] =
VK_MENU, VK_MENU, VK_MENU, VK_MENU /* FFE7 */
};
/* Returns the Windows virtual key code associated with the X event <e> */
static WORD EVENT_event_to_vkey( XKeyEvent *e)
{
KeySym keysym;
@ -749,6 +750,21 @@ INT16 WINAPI GetKeyNameText16(LONG lParam, LPSTR lpBuffer, INT16 nSize)
/****************************************************************************
* ToAscii (KEYBOARD.4)
The ToAscii function translates the specified virtual-key code and keyboard
state to the corresponding Windows character or characters.
If the specified key is a dead key, the return value is negative. Otherwise,
it is one of the following values:
Value Meaning
0 The specified virtual key has no translation for the current state of the keyboard.
1 One Windows character was copied to the buffer.
2 Two characters were copied to the buffer. This usually happens when a
dead-key character (accent or diacritic) stored in the keyboard layout cannot
be composed with the specified virtual key to form a single character.
FIXME : should do the above (return 2 for non matching deadchar+char combinations)
*/
INT16 WINAPI ToAscii16(UINT16 virtKey,UINT16 scanCode, LPBYTE lpKeyState,
LPVOID lpChar, UINT16 flags)
@ -787,25 +803,28 @@ INT16 WINAPI ToAscii16(UINT16 virtKey,UINT16 scanCode, LPBYTE lpKeyState,
for (keyc=min_keycode; (keyc<=max_keycode) && (!e.keycode) ; keyc++)
{ /* Find a keycode that could have generated this virtual key */
if ((keyc2vkey[keyc] & 0xFF) == virtKey)
{ /* we can filter the extended bit, VK* are different enough... */
{ /* We filter the extended bit, we don't know it */
e.keycode = keyc; /* Store it temporarily */
if ((EVENT_event_to_vkey(&e) & 0xFF) != virtKey)
if ((EVENT_event_to_vkey(&e) & 0xFF) != virtKey) {
e.keycode = 0; /* Wrong one (ex: because of the NumLock
state), so set it to 0, we'll find another one */
}
}
}
if ((!e.keycode) && (lpKeyState[VK_NUMLOCK] & 0x01))
{
if ((virtKey>=VK_NUMPAD0) && (virtKey<=VK_NUMPAD9))
e.keycode = TSXKeysymToKeycode(e.display, virtKey-VK_NUMPAD0+XK_KP_0);
if (virtKey==VK_DECIMAL)
e.keycode = TSXKeysymToKeycode(e.display, XK_KP_Decimal);
}
if ((virtKey>=VK_NUMPAD0) && (virtKey<=VK_NUMPAD9))
e.keycode = TSXKeysymToKeycode(e.display, virtKey-VK_NUMPAD0+XK_KP_0);
if (virtKey==VK_DECIMAL)
e.keycode = TSXKeysymToKeycode(e.display, XK_KP_Decimal);
if (!e.keycode)
{
WARN(keyboard,"Unknown virtual key %X !!! \n",virtKey);
return virtKey; /* whatever */
}
else TRACE(keyboard,"Found keycode %d (0x%2X)\n",e.keycode,e.keycode);
ret = TSXLookupString(&e, (LPVOID)lpChar, 2, &keysym, &cs);
if (ret == 0)
{
@ -918,8 +937,19 @@ INT16 WINAPI ToAscii16(UINT16 virtKey,UINT16 scanCode, LPBYTE lpKeyState,
}
}
}
else { /* ret = 1 */
/* We have a special case to handle : Shift + arrow, shift + home, ...
X returns a char for it, but Windows doesn't. Let's eat it. */
if (!(lpKeyState[VK_NUMLOCK] & 0x01) /* NumLock is off */
&& (lpKeyState[VK_SHIFT] & 0x80) /* Shift is pressed */
&& (keysym>=XK_KP_0) && (keysym<=XK_KP_9))
{
*(char*)lpChar = 0;
ret = 0;
}
}
TRACE(key, "ToAscii about to return %d with char %x\n",
ret, *(char*)lpChar);
return ret;
}