CEDBASEINFO [CEDB] (Compact 2013)

3/26/2014

This structure contains information about a database object. This structure is used by the CeSetDatabaseInfoEx2 (CEDB) and the CeCreateDatabaseEx2 (CEDB) functions.

Syntax

typedef struct _CEDBASEINFO {
  DWORD dwFlags; 
  WCHAR szDbaseName[CEDB_MAXDBASENAMELEN];
  DWORD dwDbaseType;
  WORD wNumRecords;
  WORD wNumSortOrder;
  DWORD dwSize;
  FILETIME ftLastModified;
  SORTORDERSPEC rgSortSpecs[CEDB_MAXSORTORDER];
} CEDBASEINFO;

Members

• dwFlags
  May be set to one or a combination of values. The following table shows possible values.

  Flag	Description
  CEDB_VALIDDBFLAGS	Indicates whether the CEDB_NOCOMPRESS and CEDB_SYSTEMDB extended flags are being changed.
  CEDB_VALIDMODTIME	Indicates that the ftLastModified member is valid and should be used.
  CEDB_VALIDNAME	Indicates that the szDbaseName member is valid and should be used.
  CEDB_VALIDSORTSPEC	Indicates that the rgSortSpecs member is valid and should be used.
  CEDB_VALIDTYPE	Indicates that the dwDbaseType member is valid and should be used.

  The following table shows the possible extended flag values.

  Extended flag	Description
  CEDB_NOCOMPRESS	Indicates that the database is not compressed. If this flag is used with CeSetDatabaseInfoEx2, new or modified records in a compressed database are uncompressed. If this flag is used with CeCreateDatabaseEx2, the database is not compressed. By default, all databases are compressed. If you are going to change the compression, do this at creation time.
  CEDB_SYSTEMDB	Indicates that the database is marked as a system database and cannot be deleted by an unprivileged application. An unprivileged application cannot make the following API calls on a system database file: CeCreateDatabaseEx2, CeSetDatabaseInfoEx2, or CeDeleteDatabase.

• szDbaseName
  Null-terminated string that contains the name of the database. The string can have up to 32 characters, including the terminating null character. This member must be set when used for CeCreateDatabaseEx2.

• dwDbaseType
  Type identifier for the database.

• wNumRecords
  Number of records in the database.

• wNumSortOrder
  Number of sort orders active in the database. Up to four sort orders can be active at a time.

• dwSize
  Size of the database, in bytes.

• ftLastModified
  Last time this database was modified.

• rgSortSpecs
  Array containing the sort order descriptions. Only the first n array members are valid, where n is the value specified by the wNumSortOrder member. If no sort orders are specified for CeCreateDatabaseEx2 or when CEDB_VALIDSORTSPEC is not specified, a default sort order is assigned to the database.

Remarks

The high-order word of dwFlags specifies additional database properties.

CeSetDatabaseInfoEx2 and the CeOidGetInfoEx2 (CEDB) function can use all of the dwFlags flags. CeCreateDatabaseEx2 makes use of only the CEDB_VALIDDBFLAGS, CEDB_NOCOMPRESS, and CEDB_SYSTEMDB flags. Using other flags with CeCreateDatabaseEx2 is ignored.

If you attempt to change the information for an existing database using the CeSetDatabaseInfoEx (CEDB) function and pass the CEDB_VALIDNAME flag in dwFlags, you receive an error stating that there is an existing database with that name. If you do not want to change the database name, do not set the CEDB_VALIDNAME flag. Only the flags for the parameters that are changing should be set. For parameters that are not changing, do not set the corresponding CEDB_VALID* flag.

Requirements

Header

windbase.h

See Also

Reference

CEDB Structures
CeSetDatabaseInfoEx2 (CEDB)
CeSetDatabaseInfoEx2 (CEDB)
CEOIDINFO [CEDB]
CeOidGetInfoEx2 (CEDB)