frm_infou.~pas

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unit frm_infoU;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Grids, DBGrids, StdCtrls, DB;

type
  Tfrm_info = class(TForm)
    DBGrid_info: TDBGrid;
    btn_add: TButton;
    btn_del: TButton;
    btn_edit: TButton;
    btn_exit: TButton;
    DataSource_info: TDataSource;
    procedure btn_exitClick(Sender: TObject);
    procedure btn_addClick(Sender: TObject);
    procedure btn_editClick(Sender: TObject);
    procedure btn_delClick(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frm_info: Tfrm_info;

implementation

{$R *.dfm}

procedure Tfrm_info.btn_exitClick(Sender: TObject);
begin
close;
end;

procedure Tfrm_info.btn_addClick(Sender: TObject);
begin
if self.btn_add.Caption='添加' then
  begin
    self.btn_del.Caption:='确定';
    self.btn_edit.Caption:='取消';
    self.btn_add.Visible:=false;
  end;
end;

procedure Tfrm_info.btn_editClick(Sender: TObject);
begin
if self.btn_edit.Caption='修改' then
  begin
    self.btn_del.Caption:='保存';
    self.btn_edit.Caption:='取消';
    self.btn_add.Visible:=false;
  end
else
  begin
    if self.btn_edit.Caption='取消' then
      begin
        self.btn_add.Visible:=true;
        self.btn_del.Caption:='删除';
        self.btn_edit.Caption:='修改';
      end;
  end;
end;

procedure Tfrm_info.btn_delClick(Sender: TObject);
begin
if(self.btn_del.Caption ='确定') or
  (self.btn_del.Caption ='保存')then
  begin
    self.btn_add.Visible:=true;
    self.btn_del.Caption:='删除';
    self.btn_edit.Caption:='修改';
  end;
end;

procedure Tfrm_info.FormClose(Sender: TObject; var Action: TCloseAction);
begin
action:=cafree;
end;

end.