IDirectInputDevice7::Poll

The IDirectInputDevice7::Poll method retrieves data from polled objects on a DirectInput device. If the device does not require polling, calling this method has no effect. If a device that requires polling is not polled periodically, no new data is received from the device. Calling this method causes DirectInput to update the device state, generate input events (if buffered data is enabled), and set notification events (if notification is enabled).

HRESULT Poll()

Parameters

None.

Return Values

If the method succeeds, the return value is DI_OK, or DI_NOEFFECT if the device does not require polling.

If the method fails, the return value can be one of the following error values:

Remarks

Before a device data can be polled, the data format must be set by using the IDirectInputDevice7::SetDataFormat method, and the device must be acquired by using the IDirectInputDevice7::Acquire method.

Requirements

  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in dinput.h.
  Import Library: Use dinput.lib.

See Also

Polling and Events