Video wall information structure.
struct{ DWORD dwSize; DWORD dwWindowNo; DWORD dwSceneNo; BYTE byRes[20]; }NET_DVR_VIDEO_WALL_INFO,*LPNET_DVR_VIDEO_WALL_INFO;
Structure size
Window No.=1-byte video wall No.+reserved 1-byte+2-byte window No., e.g., 1<<24
Scene No.
Reserved, set to 0
NET_DVR_SCENE_CONTROL_INFO