private IntPtr LowLevelKeyboardHookProc(
int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0)
{
KeyHookedStruct keyStruct = (KeyHookedStruct)Marshal.PtrToStructure(lParam, typeof(KeyHookedStruct));
KeyMessage keyboardMessage = (KeyMessage)wParam;
KeyStates state;
switch (keyboardMessage)
{
case KeyMessage.WM_KEYDOWM:
case KeyMessage.WM_SYSKEYDOWN:
state = KeyStates.KeyDown;
break;
case KeyMessage.WM_KEYUP:
case KeyMessage.WM_SYSKEYUP:
state = KeyStates.KeyUp;
break;
case KeyMessage.WM_CHAR:
case KeyMessage.WM_DEADCHAR:
case KeyMessage.WM_SYSCHAR:
default:
state = KeyStates.KeyQuest;
break;
}
KeyboardData keyData = new KeyboardData(keyStruct.VirtualKeyCode, state);
return OnHooked(keyData) ? CallNextHookEx(mKeyboardHook, nCode, wParam, lParam) : new IntPtr(1);
}
else
return CallNextHookEx(mKeyboardHook, nCode, wParam, lParam);
}
private INPUT BuildKeyInput(KeyboardData keyData)
{
INPUT input = new INPUT();
input.mType = SENDINPUTEVENTTYPE.INPUT_KEYBOARD;
input.mInputUnion.ki = new KEYBDINPUT
{
wVk = (short)keyData.Key.Code,
dwFlags = (KeyState)keyData.State == KeyState.KeyUp ? KEYEVENTF.KEYUP : KEYEVENTF.NONE,
};
return input;
}
