1: 2: 3: 4: 5: 6: 7: 8: 9: 10: 11: 12: 13: 14: 15: 16: 17: 18: 19: 20: 21: 22: 23: 24: 25: 26: 27: 28: 29: 30: 31: 32: 33: 34: 35: 36: 37: 38: 39: 40: 41: 42: 43: 44: 45: 46: 47: 48: 49: 50: 51: 52: 53: 54: 55: 56: 57:
| unit DBVUnit1;
interface
uses dbtables, Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;
procedure GetDBVersion(Alias, Username, PWD: PChar; var VersionsNr: PChar); stdcall; export;
implementation
procedure GetDBVersion(Alias, Username, PWD: PChar; var VersionsNr: PChar); stdcall; export; var p: pchar; s: string; Database1: TDatabase; qyRelease: TQuery; begin try Database1 := TDatabase.Create(nil); Database1.AliasName := strpas(Alias); Database1.Params.Add('USER NAME=' + strpas(Username)); Database1.Params.Add('PASSWORD=' + strpas(PWD)); try Database1.Connected := True; except VersionsNr := 'Error'; exit; end; try p := nil; s := ''; qyRelease := tQuery.Create(nil); qyRelease.sql.Add('SELECT release FROM release'); qyRelease.sql.Add('ORDER BY releasedat'); qyRelease.open; qyRelease.first; if not qyRelease.IsEmpty then begin p := pchar(qyRelease.fieldbyname('release').AsString); if strlen(p) >= 3 then begin s := p[0] + p[2]; end; VersionsNr := PChar(s) end else VersionsNr := '0'; qyRelease.close; except VersionsNr := '0'; end; finally Database1.close; FreeAndNil(Database1); end; end;
end. |