private static int HookCallback(int nCode, int wParam, KBDLLHOOKSTRUCT *lParam)
{
if (nCode < 0)
{
return(CallNextHookEx(_hookID, nCode, wParam, lParam));
}
else
{
KBDLLHOOKSTRUCT kbStruct = *lParam;
bool extended = (kbStruct.flags & FLAG_EXTENDED) == FLAG_EXTENDED;
bool down = (wParam == WM_KEYDOWN) || (wParam == WM_SYSKEYDOWN);
int scanCode = kbStruct.scanCode;
int keySym = KeyMap.translateKey((Keys)kbStruct.vkCode);
/* kbStruct.scanCode for NUM_LOCK and PAUSE are the same (69).
* But NUM_LOCK is an extended key, where as PAUSE is not.
* QEMU doesn't support PAUSE and expects NUM_LOCK scanCode
* to be sent as 69
*/
switch (scanCode)
{
/* Although RIGHT_SHIFT, NUMS_LOCK are extended keys,
* scan code for these keys are not prefixed with 0xe0.
*/
case RIGHT_SHIFT_SCAN:
case NUM_LOCK_SCAN:
break;
default:
/* 128 is added to scanCode to differentiate
* an extended key. Scan code for all extended keys
* needs to be prefixed with 0xe0, so adding 128
* or ( | 0x80) will give a hint to qemu that this
* scanCode is an extended one and qemu can then prefix
* scanCode with 0xe0
*/
scanCode += (extended ? 128 : 0);
break;
}
if (InterceptKeys.keyEvent != null)
{
InterceptKeys.keyEvent(down, scanCode, keySym);
}
if (bubble || scanCode == NUM_LOCK_SCAN)
{
return(CallNextHookEx(_hookID, nCode, wParam, lParam));
}
else
{
return(1); // Prevent the message being passed on.
}
}
}
private static int HookCallback(int nCode, int wParam, KBDLLHOOKSTRUCT *lParam)
{
if (nCode < 0)
{
return(CallNextHookEx(_hookID, nCode, wParam, lParam));
}
else
{
KBDLLHOOKSTRUCT kbStruct = *lParam;
bool extended = (kbStruct.flags & FLAG_EXTENDED) == 0;
bool down = (wParam == WM_KEYDOWN) || (wParam == WM_SYSKEYDOWN);
int scanCode = kbStruct.scanCode;
switch (scanCode)
{
case 54:
break;
default:
scanCode += (extended ? 0 : 128);
break;
}
if (InterceptKeys.keyEvent != null)
{
InterceptKeys.keyEvent(down, scanCode);
}
if (bubble || scanCode == NUM_LOCK_SCAN)
{
return(CallNextHookEx(_hookID, nCode, wParam, lParam));
}
else
{
return(1); // Prevent the message being passed on.
}
}
}
