Edit

WNODE_TOO_SMALL structure (wmistr.h)

  • Article

The WNODE_TOO_SMALL structure indicates the size of the buffer needed to receive output from a request.

Syntax

typedef struct tagWNODE_TOO_SMALL {
  struct _WNODE_HEADER WnodeHeader;
  ULONG                SizeNeeded;
} WNODE_TOO_SMALL, *PWNODE_TOO_SMALL;

Members

WnodeHeader

Is a WNODE_HEADER structure that contains information common to all WNODE_XXX structures, such as the buffer size, the GUID that represents a data block associated with a request, and flags that provide information about the WNODE_XXX data being passed or returned.

SizeNeeded

Specifies the size of the buffer needed to receive all of the WNODE_XXX data to be returned.

Remarks

When the buffer for a WMI request is too small to receive all of the data to be returned, a driver fills in a WNODE_TOO_SMALL structure to indicate the required buffer size. WMI can then increase the buffer to the recommended size and issue the request again. A driver is responsible for managing any side effects caused by handling the same request more than once.

Requirements

Requirement Value
Header wmistr.h (include Wmistr.h)

See also

WNODE_HEADER