/// <summary>
/// Handle the mouse left button down event
/// </summary>
/// <param name="sender">Mouse</param>
/// <param name="e">Mouse down information</param>
void OnMouseLeftButtonDown(Object sender, MouseButtonEventArgs e)
{
ModifierKeys modifier = ConsoleModifiers.ToModifierKeys();
if (!e.Handled && (Keyboard.Modifiers & modifier) == modifier)
{
_start = e.GetPosition(_container);
_watching = true;
_mouseDownPoint = _start;
}
}
