unit4.pas

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unit Unit4;

interface

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

type
  TForm4 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    dbgrid: TDBGrid;
    DBEdit1: TDBEdit;
    Button1: TButton;
    Button2: TButton;
    Edit1: TEdit;
    Label3: TLabel;
    Edit2: TEdit;
    Label4: TLabel;
    DBEdit2: TDBEdit;
    Button3: TButton;
    Button4: TButton;
    Label5: TLabel;
    DBComboBox1: TDBComboBox;
    Button5: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
    procedure dbgridDrawColumnCell(Sender: TObject; const Rect: TRect;
      DataCol: Integer; Column: TColumn; State: TGridDrawState);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form4: TForm4;

implementation
uses unit1,mainunit1;
{$R *.dfm}

procedure TForm4.Button1Click(Sender: TObject);
begin
//判断新密码输入是否正确或者是否为空
  if (edit1.Text='') or (edit2.Text='') or (edit1.Text<>edit2.Text)then
       begin
       MessageBox(0, '输入有误，请重新输入！', '提示', MB_OK + MB_ICONSTOP);
       edit1.Text:='';
       edit2.Text:='';
       end
    else begin
    //更新密码
       datamodule1.ADOTable2.Edit;
       dbedit1.Text:=edit1.Text;
       datamodule1.ADOTable2.Post;
       edit1.Text:='';
       edit2.Text:='';
       end ;
end;

procedure TForm4.Button2Click(Sender: TObject);
begin
form4.Close;
end;

procedure TForm4.Button5Click(Sender: TObject);
begin
datamodule1.ADOTable2.Delete;
end;

procedure TForm4.dbgridDrawColumnCell(Sender: TObject; const Rect: TRect;
  DataCol: Integer; Column: TColumn; State: TGridDrawState);
begin
  if gdselected in state then//如果当前区域是被选区域
    begin
      //设置被选区域颜色
      tdbgrid(sender).Canvas.Brush.Color:=clinfobk;
      //设置被选区域字体颜色
      tdbgrid(sender).Canvas.Font.Color:=clfuchsia;
    end
  else //如果是当前区域不是被选择区域
    begin
     //如果是偶数行，则背景颜色为 clskyblue
     if tdbgrid(sender).DataSource.DataSet.RecNo mod 2 =0 then
        tdbgrid(sender).Canvas.Brush.Color:=clskyblue
     else
     //如果是奇数行，则背景颜色为 clinactivecaptiontext
        tdbgrid(sender).Canvas.Brush.Color:=clWhite;
    end;
  //调用默认的绘图函数
  tdbgrid(sender).DefaultDrawColumnCell(rect,datacol,column,state);

end;

end.