// portabledevice.h

typedef enum tagWPD_FOCUS_METERING_MODES {
  WPD_FOCUS_METERING_MODE_UNDEFINED,
  WPD_FOCUS_METERING_MODE_CENTER_SPOT,
  WPD_FOCUS_METERING_MODE_MULTI_SPOT
} WPD_FOCUS_METERING_MODES;
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Windows Driver Kit DDI reference (ne-portabledevice-tagwpd_focus_metering_modes)

tagWPD_FOCUS_METERING_MODES enumeration

Description

The WPD_FOCUS_METERING_MODES enumeration type describes how a device should decide what part of a frame to use to set focus.

Constants

`WPD_FOCUS_METERING_MODE_UNDEFINED`

Indicates that no focusing mode has been specified.

`WPD_FOCUS_METERING_MODE_CENTER_SPOT`

Focus on the center of the framed area.

`WPD_FOCUS_METERING_MODE_MULTI_SPOT`

Determine focus by analyzing multiple parts of the framed area.

Remarks

This enumeration is specified by the WPD_STILL_IMAGE_FOCUS_METERING_MODE property.

WPD_FOCUS_METERING_MODES - NtDoc