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-<!DOCTYPE xbHtml PUBLIC>
-<xbHtml>
-<TITLE>Xbase DBMS Chapter 12</TITLE>
-<BODY BGCOLOR=#FFFFFF>
-<H1><p align="center">Database Methods</p></H1>
-<p align="center">Chapter Updated 1/30/99</p><hr>
-<br>
-This chapter lists the database methods and provides links to examples of how 
-to use them.<br><br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Xbase Database Method List</h3></CAPTION>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Method<TD>Description
-<TR><TH ALIGN="LEFT">xbShort rc AppendRecord()<TD>Append a new record to the end of an open database
-<TR><TH ALIGN="LEFT">void AutoLockOn()<TD>Turns on automatic record locking (see locking chapter)
-<TR><TH ALIGN="LEFT">void AutoLockOff()<TD>Turns off automatic record locking (see locking chapter)
-<TR><TH ALIGN="LEFT">void BlankRecord()<TD>Fill the current record buffer with blanks
-<TR><TH ALIGN="LEFT">xbLong csum CalcCheckSum()<TD>Calculate checksum on a data record
-<TR><TH ALIGN="LEFT">xbShort rc CloseDatabase()<TD>Close an open database
-<TR><TH ALIGN="LEFT">xbShort rc CopyDbfStructure(<br> char * NewFileName,<br>
-   xbShort OverlaySwitch )<TD>Copies the structure of a xbDbf file to a new file
-<TR><TH ALIGN="LEFT">xbShort rc CreateDatabase(<br>char * FileName,
-  XbSchema *s, xbShort OverlaySwitch )<TD>Close an open database
-<TR><TH ALIGN="LEFT">xbULong CurrentRecNo()<TD>Returns the current record number
-<TR><TH ALIGN="LEFT">xbShort rc DeleteAllRecords()<TD>Mark all records for deletion
-<TR><TH ALIGN="LEFT">xbShort rc DeleteRecord()<TD>Mark a record for deletion
-<TR><TH ALIGN="LEFT">xbShort rc DumpHeader(xbShort option)<TD>Display information about a .DBF file header
-<TR><TH ALIGN="LEFT">xbShort rc DumpRecord(<br>xbULong RecNo)<TD>Dump a record for a database 
-<TR><TH ALIGN="LEFT">xbLong cnt FieldCount()<TD>Returns number of fields in database
-<TR><TH ALIGN="LEFT">xbLong recno GetCurRecNo()<TD>Returns current record number
-<TR><TH ALIGN="LEFT">xbShort rc GetFirstRecord()<TD>Get the first record in the database
-<TR><TH ALIGN="LEFT">xbShort rc GetLastRecord()<TD>Get the last record in the database
-<TR><TH ALIGN="LEFT">xbShort rc GetNextRecord()<TD>Get the next record in the database
-<TR><TH ALIGN="LEFT">xbShort rc GetPrevRecord()<TD>Get the previous record in the database
-<TR><TH ALIGN="LEFT">xbShort rc GetRecord(xbLong RecNo)<TD>Get a record by record number from an open database
-<TR><TH ALIGN="LEFT">char * buf GetRecordBuf()<TD>Returns a pointer to the record buffer
-<TR><TH ALIGN="LEFT">xbLong RecCnt NoOfRecords()<TD>Returns the number of records in an open database
-<TR><TH ALIGN="LEFT">xbShort rc OpenDatabase(char * FileName)<TD>Open an existing database
-<TR><TH ALIGN="LEFT">xbShort rc PackDatabase(<br>xbShort WaitOption)<TD>Compress file and remove deleted records
-<TR><TH ALIGN="LEFT">xbShort rc PutRecord(xbULong RecNo)<TD>Put a record in an open database  
-<TR><TH ALIGN="LEFT">xbShort rc RebuildAllIndices()<TD>Rebuilds all open indices
-<TR><TH ALIGN="LEFT">xbShort dflag RecordDeleted()<TD>Determine if a record has been deleted
-<TR><TH ALIGN="LEFT">xbShort version SetVersion(xbShort Ver)<TD>Set version to xbase III+ or IV style xbDbf files
-<TR><TH ALIGN="LEFT">xbShort rc UndeleteAllRecords()<TD>Unmark all deleted records 
-<TR><TH ALIGN="LEFT">xbShort rc UndeleteRecord()<TD>Unmark a deleted record
-<TR><TH ALIGN="LEFT">xbShort rc Zap(xbShort WaitOption)<TD>Deletes all records from a database
-</TABLE>
-<BR><BR><hr>
-<h2>Method Definitions</h2>
-<hr>
-<h3>Method xbShort xbDbf::AppendRecord( void )</h3><br>
-This method appends the contents of the database record buffer to the end of
-the .DBF file and updates the date and number of records in the header of the
-datafile.<br><br>
-This method also updates any open indexes associated with the database.<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_LOCK_FAILED<TD>Write lock not successful
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Unsuccessful write operation
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample2.cpp">sample2.cpp</A> for an example 
-of how to use this method.
-<hr>
-<h3>Method xbShort xbDbf::BlankRecord( void )</h3><br>
-This method overlays the database record buffer with space (0x20)
-CHARacters.  This method is useful for initializing the record buffer.<br>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample2.cpp">sample2.cpp</A> for an example of 
-how to use this method.
-<hr>
-
-<h3>Method xbLong xbDbf::CalcCheckSum( void )</h3><br>
-This method calculates the checksum of a database record.
-<hr>
-
-<h3>Method xbShort xbDbf::CloseDatabase( void )</h3><br>
-This method closes an Xbase (.DBF) file
-which was previously opened by CreateDatabase or OpenDatabase
-and frees any previously allocated memory which is no LONGer needed.<br><br>
-This method automatically closes any open indexes associated with the
-database before closing the database.<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_NOT_OPEN<TD>If there is no error
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample2.cpp">sample2.cpp</A> for an example 
-of how to use this method.
-<hr>
-
-
-<h3>Method xbShort xbDbf::CopyDbfStructure( char *NewFileName, xbShort OverLay )</h3><br>
-This method copies the structure of an Xbase (.DBF) file to file <em>NewFileName</em>.
-If there are memo fields, they are included.
-<br><br>
-The <em>OverLay</em> switch is
-used to determine what to do if a xbDbf file with the same name
-already exists.  If <em>OverLay</em> is set to XB_OVERLAY and the file exists, 
-the file is overwritten, otherwise an error is returned.<br><br>
-<em>Overlay Switch</em> is:<br>
-<li>XB_OVERLAY = Overlay file if it exists<br>
-<li>XB_DONTOVERLAY = Return with error if file exists<br><br>
-
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_FILE_EXISTS<TD>If a file exists and OverLay switch = FALSE
-<TR><TH ALIGN="LEFT">XB_OPEN_ERROR<TD>Couldn't open the file
-<TR><TH ALIGN="LEFT">XB_NO_MEMORY<TD>Memory allocation error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Couldn't write to disk
-<TR><TH ALIGN="LEFT">XB_SEEK_ERROR<TD>Seek routine error
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/copydbf.cpp">copydbf.cpp</A> for an example 
-of how to use this method.
-<hr>
-
-
-<h3>Method:   xbShort xbDbf::CreateDatabase( char *FileName, 
-  xbSchema *s, xbShort OverLay )</h3><br>
-This method creates an Xbase (.DBF) file with the name
-of FileName and builds the header record with the format as
-defined in the <em>xbSchema</em> parameter.  The <em>OverLay</em> switch is
-used to determine what to do if a xbDbf file with the same name
-already exists.  If <em>OverLay</em> is set to XB_OVERLAY and the file exists, 
-the file is overwritten, otherwise an error is returned.<br><br>
-<em>Overlay Switch</em> is:<br>
-<li>XB_OVERLAY = Overlay file if it exists<br>
-<li>XB_DONTOVERLAY = Return with error if file exists<br><br>
-<em>xbSchema</em> has the following format:<br>
-<xmp>
-xbSchema MyRecordSchema[] = 
-{
-   { FieldName,  Type, FieldLength, NoOfDecimals },
-   { FieldName2, Type, FieldLength, NoOfDecimals },
-      ...
-   { "",0,0,0 }
-};
-</xmp>
-Where:<br>
-<li><em>FieldName</em> is the name of the data field.<br>
-<li><em>Type</em><br><br>
-<h4>Version 1.7.4 and greater:</h4>
-XB_CHAR_FLD or C<br>
-XB_DATE_FLD or D<br>
-XB_LOGICAL_FLD or L<br>
-XB_MEMO_FLD or M<br>
-XB_FLOAT_FLD or F<br>
-XB_NUMERIC_FLD or N<br><br>
-<li><em>FieldLength</em> is the length of the field.<br>
-<li><em>NoOfDecimals</em> is the number of decimals for NUMERIC fields.<br>
-<br>
-The record buffer is automatically set to spaces when this method is called.
-<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_FILE_EXISTS<TD>If a file exists and OverLay switch = FALSE
-<TR><TH ALIGN="LEFT">XB_OPEN_ERROR<TD>Couldn't open the file
-<TR><TH ALIGN="LEFT">XB_NO_MEMORY<TD>Memory allocation error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Couldn't write to disk
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample1.cpp">sample1.cpp</A> for an example 
-of how to use this method.
-<hr>
-<h3>Method xbULong xbDbf::CurrentRecNo( void )</h3><br>
-This method returns the current record number.<br><br>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/dumprecs.cpp">dumprecs.cpp</A> for an example 
-of how to use this method.
-
-<hr>
-<h3>Method xbShort xbDbf::DeleteAllRecords( void )</h3><br>
-This method marks all unmarked records in the database for deletion.<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>No error encountered
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Could not mark record
-<TR><TH ALIGN="LEFT">XB_NOT_OPEN<TD>If the file is not open
-<TR><TH ALIGN="LEFT">XB_SEEK_ERROR<TD>Seek routine error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Write routine error
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/deletall.cpp">deletall.cpp</A> for an example 
-of how to use this method.
-
-<hr>
-<h3>Method xbShort xbDbf::DeleteRecord( void )</h3><br>
-This method marks the current record for deletion in the database.<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>No error encountered
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Could not mark record
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample4.cpp">sample4.cpp</A> for an example 
-of how to use this method.
-
-<hr>
-<h3>Method xbShort xbDbf::DumpHeader( xbShort Option )</h3><br>
-This method displays information about a .DBF file header to stdout.  
-This method is only available if the DEBUG option is turned on in the
-<em>options.h</em> file<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Options</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Option<TD>Action
-<TR><TH ALIGN="LEFT">1<TD>Print Header Only
-<TR><TH ALIGN="LEFT">2<TD>Field Data Only
-<TR><TH ALIGN="LEFT">3<TD>Header and Field Data 
-</TABLE>
-<br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_INVALID_OPTION<TD>Option must be 1,2 or 3
-<TR><TH ALIGN="LEFT">XB_NOT_OPEN<TD>File is not open
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>No error encountered
-</TABLE>
-<br>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/dumphdr.cpp">dumphdr.cpp</A> for an 
-example of how to use this method.
-
-<hr>
-<h3>Method xbShort xbDbf::DumpRecord( xbULong RecNo )</h3><br>
-This method dumps record RecNo for the database to stdout.<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>No error encountered
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Invalid record for RecNo parameter
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/dumprecs.cpp">dumprecs.cpp</A> for an 
-example of how to use this method.
-<hr>
-<h3>Method xbLong xbDbf::FieldCount( void )</h3><br>
-This method returns the number of fields defined in the database.
-<br><br>
-<hr>
-<h3>Method xbLong xbDbf::GetCurRecNo( void )</h3><br>
-This method returns the current record number of the record in the record buffer.
-<br><br>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample3.cpp">sample3.cpp</A> for an 
-example of how to use this method.
-<hr>
-<h3>Method xbShort xbDbf::GetFirstRecord( void )</h3><br>
-This method loads the first record of the file into the record buffer.<br><br> 
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Invalid record number
-<TR><TH ALIGN="LEFT">XB_LOCK_FAILED<TD>Unsuccessful lock operation
-<TR><TH ALIGN="LEFT">XB_NOT_OPEN<TD>If the file is not open
-<TR><TH ALIGN="LEFT">XB_SEEK_ERROR<TD>Seek routine error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Write routine error
-</TABLE>
-<h4>Example Program:</h4>
-
-See program <A HREF="/XbaseSamples/sample3.cpp">sample3.cpp</A> for an 
-example of how to use this method.
-<hr>
-<h3>Method xbShort xbDbf::GetLastRecord( void )</h3><br>
-
-This method loads the last record of the file into the record buffer.<br><br> 
-
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_LOCK_FAILED<TD>Read lock not successful
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_EOF<TD>At end of file
-<TR><TH ALIGN="LEFT">XB_NOT_OPEN<TD>If the file is not open
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Invalid record number
-<TR><TH ALIGN="LEFT">XB_SEEK_ERROR<TD>Seek routine error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Write routine error
-</TABLE>
-
-<h4>Example Program:</h4>
-
-See program <A HREF="/XbaseSamples/sample3.cpp">sample3.cpp</A> for an example 
-of how to use this method.
-<hr>
-<h3>Method xbShort xbDbf::GetNextRecord( void )</h3><br>
-
-This method loads the next record of the file into the record buffer.<br><br> 
-
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_LOCK_FAILED<TD>Read lock not successful
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_EOF<TD>At end of file
-<TR><TH ALIGN="LEFT">XB_NOT_OPEN<TD>If the file is not open
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Invalid record number
-<TR><TH ALIGN="LEFT">XB_SEEK_ERROR<TD>Seek routine error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Write routine error
-</TABLE>
-</TABLE>
-
-<h4>Example Program:</h4>
-
-See program <A HREF="/XbaseSamples/sample3.cpp">sample3.cpp</A> for an 
-example of how to use this method.
-<hr>
-<h3>Method xbShort xbDbf::GetPrevRecord( void )</h3><br>
-
-This method loads the previous record of the file into the record buffer.<br><br> 
-
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_LOCK_FAILED<TD>Read lock not successful
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_BOF<TD>At beginning of file
-<TR><TH ALIGN="LEFT">XB_NOT_OPEN<TD>If the file is not open
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Invalid record number
-<TR><TH ALIGN="LEFT">XB_SEEK_ERROR<TD>Seek routine error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Write routine error
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample3.cpp">sample3.cpp</A> for an 
-example of how to use this method.
-<hr>
-<h3>Method xbShort xbDbf::GetRecord( xbLong RecNo )</h3><br>
-This method retrieves record RecNo from the database into the record buffer.
-<br><br>
-This method will call the PutRec method and flush all updates to disk if
-necessary before moving to the specified record.  If PutRecord is not
-successful, this method will return the return code from PutRecord.<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_LOCK_FAILED<TD>Read lock not successful
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_NOT_OPEN<TD>If the file is not open
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Invalid record number
-<TR><TH ALIGN="LEFT">XB_SEEK_ERROR<TD>Seek routine error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Write routine error
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample3.cpp">sample3.cpp</A> for an 
-example of how to use this method.
-<hr>
-<h3>Method char * xbDbf::GetRecordBuf( void )</h3><br>
-This method returns a pointer to the record buffer.
-<br><br>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample3.cpp">sample3.cpp</A> for an 
-example of how to use this method.
-<hr>
-<h3>Method xbLong xbDbf::NoOfRecords( void )</h3><br>
-This method returns the number of records in the file.<br><br>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample3.cpp">sample3.cpp</A> for an 
-example of how to use this method.
-<hr>
-<h3>Method xbShort xbDbf::OpenDatabase( char * FileName )</h3><br>
-This method opens an Xbase (.DBF) file with the name
-of FileName.  <em>FileName</em> must a valid filename which can include
-drives identifier, directory, filename and extension. <br><br>
-The OpenDatabase method does not position to any any particular
-data record.  After opening a database, use GetRecord, GetFirstRecord
-or GetLastRecord to position to a particular data record and load
-a data record into the record buffer.<br><br>
-The record buffer is automatically set to spaces when this method is called.
-<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_OPEN_ERROR<TD>Couldn't open the file
-<TR><TH ALIGN="LEFT">XB_NO_MEMORY<TD>Memory allocation error
-<TR><TH ALIGN="LEFT">XB_NOT_XBASE<TD>Not an xbXBase type file
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample2.cpp">sample2.cpp</A> for an 
-example of how to use this method.
-<hr>
-<h3>Method xbShort xbDbf::PackDatabase( xbShort WaitOption )</h3><br>
-This method removes all records marked for deletion from an Xbase (.DBF) file
-and reindexes any open index files.  This method also reorganizes any memo
-fields stored in a .DBT memo file.
-<br><br>
-<em>WaitOption</em> is one of:<br><br>
-<li>F_SETLK - returns if the xbDbf file can not be exclusively locked
-<li>F_SETLKW - will wait to execute until it can exclusively lock the file
-<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_CLOSE_ERROR<TD>If intermediate work file can not be closed
-<TR><TH ALIGN="LEFT">XB_OPEN_ERROR<TD>Could not open file
-<TR><TH ALIGN="LEFT">XB_NO_MEMORY<TD>Memory allocation error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Error writing to file
-<TR><TH ALIGN="LEFT">XB_SEEK_ERROR<TD>Seek error encountered
-<TR><TH ALIGN="LEFT">XB_LOCK_FAILED<TD>Can not lock file or index
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/packdbf.cpp">packdbf.cpp</A> for an 
-example of how to use this method.
-<hr>
-<h3>Method xbShort xbDbf::PutRecord( xbLong RecNo )</h3><br>
-This method copies the record buffer into record <em>RecNo</em> in the database. 
-This method can be used for updating records which were retrieved by 
-the GetRecord method.<br><br>
-This method updates any open index files.<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_LOCK_FAILED<TD>Write lock not successful
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_NOT_OPEN<TD>Database is not open
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Invalid record number
-<TR><TH ALIGN="LEFT">XB_SEEK_ERROR<TD>Seek operation failed
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Write operation failed
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample3.cpp">sample3.cpp</A> for an
-example of how to use this method.
-<hr>
-
-<h3>Method xbShort xbDbf::RebuildAllIndicis( void )</h3><br>
-This method rebuilds all opened indicis for the database file.<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>If there is no error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Error writing data
-<TR><TH ALIGN="LEFT">XB_CLOSE_ERROR<TD>Error closing work file
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/reindex.cpp">reindex.cpp</A> for an
-example of how to use this method.
-<hr>
-
-
-
-<h3>Method xbShort xbDbf::RecordDeleted( void )</h3><br>
-This method returns TRUE (or 1) if a record is marked for deletion and
-returns FALSE (or 0) if the record is not marked for deletion.  <br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">TRUE (1)<TD>Record is marked for deletion
-<TR><TH ALIGN="LEFT">FALSE (0)<TD>Record is not marked for deletion
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample4.cpp">sample4.cpp</A> for an
-example of how to use this method.
-<hr>
-
-
-<h3>Method xbShort xbDbf::SetVersion( xbShort Vswitch )</h3><br>
-
-This method sets the version of xbDbf and DBT database files and memo files 
-to be created using the CreateDatabase method.  The default setting is 
-3 - dBASE III+ version files.  It can be set to 4 - for dBASE IV style
-files.<br><br>
-Vswitch is one of:<br>
-0 - return current setting<br>
-3 - Set to create version III files (default)<br>
-4 - Set to create version IV files<br><br>
-
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>Setting updated
-<TR><TH ALIGN="LEFT">3 or 4<TD>If Vswitch = 0, it returns current version setting
-<TR><TH ALIGN="LEFT">XB_INVALID_OPTION<TD>Vswictch not one of 0,3 or 4
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample1.cpp">sample1.cpp</A> for an
-example of how to use this method.
-<hr>
-
-<h3>Method xbShort xbDbf::UndeleteAllRecords( void )</h3><br>
-This method unmarks all marked for deletion records in the database.<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>No error encountered
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Could not mark record
-<TR><TH ALIGN="LEFT">XB_NOT_OPEN<TD>If the file is not open
-<TR><TH ALIGN="LEFT">XB_SEEK_ERROR<TD>Seek routine error
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Write routine error
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/undelall.cpp">undelall.cpp</A> for an example 
-of how to use this method.
-<hr>
-
-<h3>Method xbShort xbDbf::UndeleteRecord( void )</h3><br>
-This method removes the mark for deletion on the current record in the 
-database.<br><br>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>No error encountered
-<TR><TH ALIGN="LEFT">XB_INVALID_RECORD<TD>Could not unmark record
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/sample4.cpp">sample4.cpp</A> for an 
-example of how to use this method.
-<hr>
-
-<h3>Method xbShort xbDbf::Zap( xbShort WaitOption )</h3><br>
-This method removes all records from a database and any open indices.
-<br><br>
-<em>WaitOption</em> is one of:<br><br>
-<li>F_SETLK - returns if the xbDbf file can not be exclusively locked
-<li>F_SETLKW - will wait to execute until it can exclusively lock the file
-<br><br>
-<TABLE BORDER>
-<TABLE BORDER>
-<CAPTION ALIGN="TOP"><h3>Method Return Codes</h3></CAPTION><br>
-<TR VALIGN="BASELINE">
-<TR><TH ALIGN="LEFT">Return Code<TD>Description
-<TR><TH ALIGN="LEFT">XB_NO_ERROR<TD>No error encountered
-<TR><TH ALIGN="LEFT">XB_LOCK_FAILED<TD>Could not lock file
-<TR><TH ALIGN="LEFT">XB_WRITE_ERROR<TD>Could not write to file
-<TR><TH ALIGN="LEFT">XB_OPEN_ERROR<TD>Could not open temp database
-</TABLE>
-<h4>Example Program:</h4>
-See program <A HREF="/XbaseSamples/zap.cpp">zap.cpp</A> for an 
-example of how to use this method.
-<hr>
-
-<p><img src="xbase.jpg"><br><hr>
-</BODY>
-</xbHtml>