Method VisibilityChanged

source/script_gui.cpp:7690–7708

void GuiType::VisibilityChanged()
{
	// Adjust the ref count to reflect the fact that the user has a "reference" to the GUI;
	// that is, the user can interact with it, raising events which may cause callbacks into
	// script.  The script doesn't need any other references to the GUI, since one will be
	// provided in the event callback.
	// In other words, the script is not required to keep a reference to the object while the
	// GUI is visible, but also isn't required to Destroy() it explicitly.  Destroy() will be
	// called automatically when the last reference is released (which may be below).
	bool visible = IsWindowVisible(mHwnd);
	if (visible != mVisibleRefCounted) // Visibility really has changed.
	{
		mVisibleRefCounted = visible; // Change this first in case of recursion.
		if (visible)
			AddRef();
		else
			Release();
	}
}