IDirectInputDevice8::GetDeviceState

Retrieves immediate data from the device.

HRESULT GetDeviceState(
  DWORD cbData,
  LPVOID lpvData
);

Parameters

cbData

Size of the buffer in the lpvData parameter, in bytes.

lpvData

Address of a structure that receives the current state of the device. The format of the data is established by a prior call to the IDirectInputDevice8::SetDataFormat method.

Return Values

If the method succeeds, the return value is DI_OK. If the method fails, the return value can be one of the following error values: DIERR_INPUTLOST, DIERR_INVALIDPARAM, DIERR_NOTACQUIRED, DIERR_NOTINITIALIZED, E_PENDING.

Remarks

Before device data can be obtained, set the cooperative level by using the IDirectInputDevice8::SetCooperativeLevel method, then set the data format by using IDirectInputDevice8::SetDataFormat, and acquire the device by using the IDirectInputDevice8 Interface method.

The five predefined data formats require corresponding device state structures according to the following table:

For example, if you passed the c_dfDIMouse format to the IDirectInputDevice8::SetDataFormat method, you must pass a DIMOUSESTATE structure to the IDirectInputDevice8::GetDeviceState method.

Requirements

Header: Declared in Dinput.h.

See Also

IDirectInputDevice8::Poll, Polling and Event Notification, Buffered and Immediate Data