2.2 Message Syntax

Several structures and messages in the following sections refer to chapter or bookmark handles. A handle is a 32-bit long opaque structure that uniquely identifies a chapter or bookmark. Typically, client applications receive handle values via method calls. However, there are several well-known values that need not be obtained from a server, the meaning of which is specified in the following table.

 Value

 Meaning

DB_NULL_HCHAPTER

0x00000000

A chapter handle to the unchaptered rowset that contains all query results.

DBBMK_FIRST

0xFFFFFFFC

A bookmark handle to a bookmark that identifies the first row in the rowset.

DBBMK_LAST

0xFFFFFFFD

A bookmark handle to a bookmark that identifies the last row in the rowset.

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