guide.pas

通过delphi和sql的使用

unit guide;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, StdCtrls, ComCtrls;

type
  TForm3 = class(TForm)
    Label1: TLabel;
    Bevel1: TBevel;
    GroupBox1: TGroupBox;
    AllDataRadioButton: TRadioButton;
    PartRadioButton: TRadioButton;
    BeginDate: TDateTimePicker;
    EndDate: TDateTimePicker;
    Label2: TLabel;
    Label3: TLabel;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Enter(Sender: TObject);
    procedure PartRadioButtonClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form3: TForm3;

implementation

{$R *.dfm}

procedure TForm3.Button1Enter(Sender: TObject);
begin
    if BeginDate.Date>EndDate.Date then
    begin
        messagedlg('结束日期不能小于开始日期！',mtWarning,[mbOK],0);
        EndDate.SetFocus;
    end;
end;

procedure TForm3.PartRadioButtonClick(Sender: TObject);
begin
   BeginDate.Enabled:=PartRadioButton.Checked;
   EndDate.Enabled:=PartRadioButton.Checked;
end;

end.