/// <summary>
/// Sends key.
/// Not used for keys whose scancode can depend on keyboard layout. To get scancode, uses keyboard layout of current thread.
/// </summary>
/// <param name="k"></param>
/// <param name="downUp">1 down, 2 up, 0 down-up.</param>
internal static void SendKey(KKey k, int downUp = 0)
{
uint f = 0;
if (KeyTypes_.IsExtended(k))
{
f |= Api.KEYEVENTF_EXTENDEDKEY;
}
ushort scan = VkToSc(k);
if (0 == (downUp & 2))
{
SendKeyEventRaw(k, scan, f);
}
if (0 == (downUp & 1))
{
SendKeyEventRaw(k, scan, f | Api.KEYEVENTF_KEYUP);
}
}
/// <summary>
/// Adds single key, specified as <see cref="KKey"/>, to the internal collection. It will be sent by <see cref="Send"/>.
/// Returns self.
/// </summary>
/// <param name="key">Virtual-key code, as <see cref="KKey"/> or int like <c>(KKey)200</c>. Valid values are 1-255.</param>
/// <param name="down">true - key down; false - key up; null (default) - key down-up.</param>
/// <exception cref="ArgumentException">Invalid <i>key</i> (0).</exception>
public AKeys AddKey(KKey key, bool?down = null)
{
_ThrowIfSending();
if (key == 0)
{
throw new ArgumentException("Invalid value.", nameof(key));
}
bool isPair; _KFlags f = 0;
if (!(isPair = (down == null)) && !down.GetValueOrDefault())
{
f |= _KFlags.Up;
}
if (KeyTypes_.IsExtended(key))
{
f |= _KFlags.Extended;
}
return(_AddKey(new _KEvent(isPair, key, f)));
}
