IDeviceManagerGetInitialStates Method

Calling this method requires that an event receiver has been registered (see Register(EventReceiver)) by the application. This application will then receive the current states of the devices managed by the corresponding device manager. Specific device managers e.g. the IInputManager override method GetInitialStates() by device-specific functionality i.e. IInputManager.GetInitialStates() sends only states of input devices.
The following table lists all device manager which overrides GetInitialStates().

Device Manager	Result of GetInitialStates()
DeviceManager	current states for all devices
CameraManager	current states for cameras
DomeCameraManager	current states for dome cameras
RelayManager	current states for relais
InputManager	current states for inputs
VirtualInputManager	current states for virtual inputs
ScheduleManager	current states for schedules
MatrixManager	current states for allegiant devices
RecorderManager	current states for recorder devices
DecoderManager	nothing (as monitor devices do not have a state)
CompoundEventManager	current states for compound events

Reference