CDatabase::GetBookmarkPersistence
Call this member function to determine the persistence of bookmarks on a recordset object after certain operations.
DWORD GetBookmarkPersistence( ) const;
Возвращаемое значение
A bitmask that identifies the operations through which bookmarks persist on a recordset object. For details, see Remarks.
Заметки
For example, if you call CRecordset::GetBookmark and then call CRecordset::Requery, the bookmark obtained from GetBookmark may no longer be valid. You should call GetBookmarkPersistence before calling CRecordset::SetBookmark.
The following table lists the bitmask values that can be combined for the return value of GetBookmarkPersistence.
Bitmask value |
Bookmark persistence |
|---|---|
SQL_BP_CLOSE |
Bookmarks are valid after a Requery operation. |
SQL_BP_DELETE |
The bookmark for a row is valid after a Delete operation on that row. |
SQL_BP_DROP |
Bookmarks are valid after a Close operation. |
SQL_BP_SCROLL |
Bookmarks are valid after any Move operation. This simply identifies if bookmarks are supported on the recordset, as returned by CRecordset::CanBookmark. |
SQL_BP_TRANSACTION |
Bookmarks are valid after a transaction is committed or rolled back. |
SQL_BP_UPDATE |
The bookmark for a row is valid after an Update operation on that row. |
SQL_BP_OTHER_HSTMT |
Bookmarks associated with one recordset object are valid on a second recordset. |
For more information about this return value, see the ODBC API function SQLGetInfo in the Windows SDK. For more information about bookmarks, see the article Recordset: Bookmarks and Absolute Positions (ODBC).
Требования
Header: afxdb.h