uses vcf1, dbtables;


 procedure SaveSpreadsheet(F1Book: TF1Book);
 var
 BlobStream: TBlobStream;
 MyBlob: HGlobal;
 pblob: Pointer;
 begin
 with Datamodule1.Query1 do
 begin
 Set8087CW($133f);
 try
 Application.ProcessMessages;
 F1Book.SaveWindowInfo;
 MyBlob := GlobalAlloc(GMEM_MOVEABLE, 2000);
 try
 F1Book.WriteToBlob(MyBlob, 0);
 pBlob := globalLock(MyBlob);
 try
 Blobstream := TBlobStream.Create(TBlobField(FieldByName('QUOTE_BLOB')),
 bmWrite);
 try
 Blobstream.Write(pBlob^, GlobalSize(myBlob));
 finally
 Blobstream.Free;
 end;
 finally
 globalUnlock(MyBlob);
 end;
 F1book.IF1Book_Modified := False;
 finally
 globalFree(myblob);
 end;
 finally
 Set8087CW(Default8087CW);
 Application.ProcessMessages;
 end;
 end;
 end;

 //Depending on your Delphi Version (<D4), you will need: 
//D4 und fruhere Versionen brauchen noch: 

var
 Default8087CW: Word = $1332;

 procedure Set8087CW(NewCW: Word);
 asm
 MOV Default8087CW,AX
 FLDCW Default8087CW
 end;