ICameraControl::get_ExposureRelative method (vidcap.h)

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The get_ExposureRelative method returns the camera's relative exposure time. The relative exposure time is expressed as a number of steps, where the size of each step depends on the camera model.

Syntax

HRESULT get_ExposureRelative(
  [out] long *pValue,
  [out] long *pFlags
);

Parameters

[out] pValue

Receives the relative exposure. To get the range of possible values, call ICameraControl::getRange_ExposureRelative.

[out] pFlags

Receives one or more flags. See CameraControlFlags.

Return value

Returns an HRESULT value.

Requirements

See also

Error and Success Codes

ICameraControl Interface