multirec.pas

delphi实例大全非常经典

unit MultiRec;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, Mask, DBCtrls, DBTables, DB, ComCtrls, ExtCtrls, DBCGrids;

type
  TForm1 = class(TForm)
    DBCtrlGrid1: TDBCtrlGrid;
    Table1: TTable;
    DataSource1: TDataSource;
    Table1Name: TStringField;
    Table1Capital: TStringField;
    Table1Continent: TStringField;
    Table1Area: TFloatField;
    Table1Population: TFloatField;
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    Label1: TLabel;
    Label2: TLabel;
    Panel1: TPanel;
    TrackBar1: TTrackBar;
    LabelCols: TLabel;
    procedure TrackBar1Change(Sender: TObject);
    procedure FormResize(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.TrackBar1Change(Sender: TObject);
begin
  LabelCols.Caption := Format (
    '%d Columns', [TrackBar1.Position]);
  DBCtrlGrid1.ColCount := TrackBar1.Position;
  DBCtrlGrid1.Width := ClientWidth;
end;

procedure TForm1.FormResize(Sender: TObject);
begin
  DBCtrlGrid1.RowCount :=
    (ClientHeight - Panel1.Height) div 100;
  DBCtrlGrid1.Height := ClientHeight - Panel1.Height;
  DBCtrlGrid1.Width := ClientWidth;
end;

end.