ICameraControl::getRange_Focus 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 getRange_Focus method returns the range of focal distances supported by the camera.

Syntax

HRESULT getRange_Focus(
  [out] long *pMin,
  [out] long *pMax,
  [out] long *pSteppingDelta,
  [out] long *pDefault,
  [out] long *pCapsFlag
);

Parameters

[out] pMin

Receives the minimum focus distance, in millimeters.

[out] pMax

Receives the maximum focus distance, in millimeters.

[out] pSteppingDelta

Receives the smallest step between settings.

[out] pDefault

Receives the default focus distance.

[out] pCapsFlag

Receives one or more flags. See CameraControlFlags.

Return value

Returns an HRESULT value.

Requirements

See also

Error and Success Codes

ICameraControl Interface