ICameraControl::put_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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 put_Focus method sets the distance that is optimally in focus.

Syntax

HRESULT put_Focus(
  [in] long Value,
  [in] long Flags
);

Parameters

[in] Value

Specifies the focus distance, in millimeters.

[in] Flags

Zero or more flags. See CameraControlFlags. If the CameraControl_Flags_Auto flag is used, the Value parameter is ignored and the camera sets the default value.

Return value

Returns an HRESULT value.

Requirements

See also

Error and Success Codes

ICameraControl Interface