id No 1 13966554433 2 13823374637 ...procedure TForm1.Timer1Timer(Sender: TObject); var i: integer; begin ... ADOQuery1.SQL.Add('SELECT * FROM tablename'); ADOQuery1.Open; i := Random(ADOQuery1.RecordCount); ADOQuery1.SQL.Clear; ADOQuery1.SQL.Add('SELECT No FROM tablename WHERE id=' + IntToStr(i)); ADOQuery1.Open; Label1.Caption := ''; Label1.Caption := ADOQuery1.Fields[0].AsString; end;
id No
1 13966554433
2 13823374637
...procedure TForm1.Timer1Timer(Sender: TObject);
var
i: integer;
begin
...
ADOQuery1.SQL.Add('SELECT * FROM tablename');
ADOQuery1.Open;
i := Random(ADOQuery1.RecordCount);
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('SELECT No FROM tablename WHERE id=' + IntToStr(i));
ADOQuery1.Open;
Label1.Caption := '';
Label1.Caption := ADOQuery1.Fields[0].AsString;
end;
显示号码的窗体.DoubleBuffered := True;
FORM 的属性 borderstyle=bsnone,transparentcolor=true
image的属性 transparent=true