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ICameraControl::getRange_Zoom

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Microsoft DirectShow 9.0

ICameraControl::getRange_Zoom

This topic applies only to Windows XP Service Pack 2 and later.

The getRange_Zoom method returns the range of zoom levels supported by the camera.

Syntax

  HRESULT getRange_Zoom(
  long*  pMin,
  long*  pMax,
  long*  pSteppingDelta,
  long*  pDefault,
  long*  pCapsFlag
);

Parameters

pMin

[out]  Receives the minimum zoom.

pMax

[out]  Receives the maximum zoom.

pSteppingDelta

[out]  Receives the smallest step between settings.

pDefault

[out]  Receives the default zoom.

pCapsFlag

[out]  Receives one or more flags. See CameraControlFlags.

Return Values

Returns an HRESULT value.

Remarks

For information about calculating magnification from zoom level, see ICameraControl::get_FocalLengths.

Requirements

Header: Include Vidcap.h.

Library: Use Strmiids.lib.

See Also