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. |