Constant DXGI_MSG_IDXGIFactory2_RegisterOcclusionStatusEvent_UnsupportedOS
pub const DXGI_MSG_IDXGIFactory2_RegisterOcclusionStatusEvent_UnsupportedOS: DXGI_Message_Id;
pub const DXGI_MSG_IDXGIFactory2_RegisterOcclusionStatusEvent_UnsupportedOS: DXGI_Message_Id;