/// <summary>Called when a mouse button has been pressed down</summary>
/// <param name="button">Index of the button that has been pressed</param>
public void InjectMousePress(MouseButton button)
{
_heldMouseButtons |= button;
// If a control is activated, it will receive any input notifications
if (_activatedControl != null)
{
_activatedControl.ProcessMousePress(button);
return;
}
// No control was activated, so the desktop control becomes activated and
// is responsible for routing the input to the control under the mouse.
_activatedControl = _desktopControl;
_desktopControl.ProcessMousePress(button);
}