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CLASS_MEDIA_CHANGE_CONTEXT structure (winioctl.h)

  • Article

Contains information associated with a media change event.

Syntax

typedef struct _CLASS_MEDIA_CHANGE_CONTEXT {
  DWORD MediaChangeCount;
  DWORD NewState;
} CLASS_MEDIA_CHANGE_CONTEXT, *PCLASS_MEDIA_CHANGE_CONTEXT;

Members

MediaChangeCount

The number of times that media has been changed since system startup.

NewState

The state information. This member can be one of the following values from the MEDIA_CHANGE_DETECTION_STATE enumeration type.

MediaUnknown (0)

MediaPresent (1)

MediaNotPresent (2)

MediaUnavailable (3)

Requirements

Requirement Value
Minimum supported client Windows Vista
Minimum supported server Windows Server 2003
Header winioctl.h (include Windows.h)

See also

DBT_CUSTOMEVENT

DBT_DEVICEREMOVECOMPLETE