/// <summary>
/// Notifies event subscribers of a keyboard event
/// </summary>
/// <param name="wParam">key info</param>
/// <param name="hookStruct">keyboard info</param>
/// <param name="handled">was the event handled? set to true if so</param>
private void notifyEvent(KeyboardWParam wParam, KBDLLHOOKSTRUCT hookStruct, ref bool handled)
{
var args = new KeyEventArgs((Keys)hookStruct.vkCode)
{
Handled = false
};
switch (wParam)
{
case KeyboardWParam.WM_SYSKEYDOWN:
if (EvtKeyDown != null)
{
EvtKeyDown(this, args);
}
break;
case KeyboardWParam.WM_KEYDOWN:
if (EvtKeyDown != null)
{
EvtKeyDown(this, args);
}
if (EvtKeyPress != null)
{
bool isShiftDown = (User32Interop.GetKeyState(VK_SHIFT) & 0x80) == 0x80;
bool isCapsLockDown = User32Interop.GetKeyState(VK_CAPITAL) != 0;
var keyState = new byte[256];
var inBuffer = new byte[2];
User32Interop.GetKeyboardState(keyState);
if (User32Interop.ToAscii(hookStruct.vkCode, hookStruct.scanCode, keyState, inBuffer, hookStruct.flags) == 1)
{
var key = (char)inBuffer[0];
if ((isCapsLockDown ^ isShiftDown) && Char.IsLetter(key))
{
key = Char.ToUpper(key);
}
var e = new KeyPressEventArgs(key);
EvtKeyPress(this, e);
}
}
break;
case KeyboardWParam.WM_SYSKEYUP:
case KeyboardWParam.WM_KEYUP:
if (EvtKeyUp != null)
{
EvtKeyUp(this, args);
}
break;
}
handled = args.Handled;
}