public IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam)
{
bool fEatKeyStroke = false;
var wparamTyped = wParam.ToInt32();
if (Enum.IsDefined(typeof(Native.KeyboardState), wparamTyped))
{
object o = Marshal.PtrToStructure(lParam, typeof(LowLevelKeyboardInputEvent));
LowLevelKeyboardInputEvent p = (LowLevelKeyboardInputEvent)o;
var eventArguments = new KeyboardHookEventArgs(p, (Native.KeyboardState)wparamTyped);
var scancode = eventArguments.KeyboardData.HardwareScanCode;
var vkey = (VirtualKeys)eventArguments.KeyboardData.VirtualCode;
var flags = eventArguments.KeyboardData.Flags;
var extended = ((flags) & ((int)KeyFlags.KF_EXTENDED >> 8)) > 0;
var altdown = ((flags) & ((int)KeyFlags.KF_ALTDOWN >> 8)) > 0;
var dlgmode = ((flags) & ((int)KeyFlags.KF_DLGMODE >> 8)) > 0;
var menumode = ((flags) & ((int)KeyFlags.KF_MENUMODE >> 8)) > 0;
var repeat = ((flags) & ((int)KeyFlags.KF_REPEAT >> 8)) > 0;
var up = ((flags) & ((int)KeyFlags.KF_UP >> 8)) > 0;
//TODO: why is this code ignoring virtual keys and mapping it custom?
//TODO: figure out what extended 2 is supposed to do from the raw input opentk code....
var is_valid = true;
Key key = WinKeyMap.TranslateKey(scancode, vkey, extended, false, out is_valid);
if (is_valid)
{
if (eventArguments.KeyboardState == Native.KeyboardState.KeyDown || eventArguments.KeyboardState == Native.KeyboardState.SysKeyDown)
{
OnKeyDown(key);
fEatKeyStroke = KeyDownArgs.Handled;
}
if (eventArguments.KeyboardState == Native.KeyboardState.KeyUp || eventArguments.KeyboardState == Native.KeyboardState.SysKeyUp)
{
OnKeyUp(key);
fEatKeyStroke = KeyUpArgs.Handled;
}
}
}
return(fEatKeyStroke ? (IntPtr)1 : NativeMethods.CallNextHookEx(IntPtr.Zero, nCode, wParam, lParam));
}
public override void SendKeyUp(Key key)
{
bool keyup = true;
bool altDown = KeyboardState.IsKeyDown(Key.AltLeft) || KeyboardState.IsKeyDown(Key.AltRight);
WinKeyMap.ReverseTranslateKey(key, keyup, altDown, out int tscancode, out VirtualKeys tvk, out _, out bool extended);
// bool sysKey = (!altDown && key == Key.AltLeft) || (!altDown && key == Key.AltRight) || ((key != Key.AltLeft && key != Key.AltRight && altDown));
int dwFlags = 0x0008 | 0x0002;
if (extended)
{
dwFlags |= 0x0001;
}
KeyboardState.SetKeyState(key, false);
//var altdown = ((tflags) & ((int)KeyFlags.KF_ALTDOWN >> 8)) > 0;
//var dlgmode = ((tflags) & ((int)KeyFlags.KF_DLGMODE >> 8)) > 0;
//var menumode = ((tflags) & ((int)KeyFlags.KF_MENUMODE >> 8)) > 0;
//var repeat = ((tflags) & ((int)KeyFlags.KF_REPEAT >> 8)) > 0;
//var up = ((tflags) & ((int)KeyFlags.KF_UP >> 8)) > 0;
NativeMethods.INPUT[] inputs;
if (extended)
{
inputs = new[]
{
new NativeMethods.INPUT
{
type = NativeMethods.INPUT_KEYBOARD,
u = new NativeMethods.InputUnion
{
ki = new NativeMethods.KEYBDINPUT()
{
wScan = 0xe0,
wVk = 0,
dwFlags = 0,
dwExtraInfo = NativeMethods.GetMessageExtraInfo()
}
}
},
new NativeMethods.INPUT
{
type = NativeMethods.INPUT_KEYBOARD,
u = new NativeMethods.InputUnion
{
ki = new NativeMethods.KEYBDINPUT()
{
wScan = (ushort)tscancode,
wVk = (ushort)tvk,
dwFlags = (ushort)dwFlags,
dwExtraInfo = NativeMethods.GetMessageExtraInfo()
}
}
}
};
}
else
{
inputs = new[]
{
new NativeMethods.INPUT
{
type = NativeMethods.INPUT_KEYBOARD,
u = new NativeMethods.InputUnion
{
ki = new NativeMethods.KEYBDINPUT()
{
wScan = (ushort)tscancode,
wVk = (ushort)tvk,
dwFlags = (ushort)dwFlags,
dwExtraInfo = NativeMethods.GetMessageExtraInfo()
}
}
}
};
}
NativeMethods.SendInput((uint)inputs.Length, inputs, Marshal.SizeOf(typeof(NativeMethods.INPUT)));
}