启动控制面板各窗口

首先复习怎样调用外部程序:
Delphi 运行外部程序是使用 Windows.WinExec 或 ShellAPI.ShellExecute, 譬如:

WinExec('notepad.exe', SW_NORMAL); {打开记事本}
WinExec('regedit.exe', SW_NORMAL); {打开注册表编辑器}

DLL 文件与 EXE 文件的主要区别就是 EXE 可以直接运行, 而 DLL 不可以;
但在 Win32 系统下, 我们可以使用系统文件 rundll32.exe 调用 DLL 中的功能;
譬如下面一句程序可以打开控制面板窗口:

WinExec('rundll32.exe shell32.dll,Control_RunDLL', SW_NORMAL); 
//可以简化一下(省略后缀):
WinExec('rundll32 shell32,Control_RunDLL', SW_NORMAL);
//SW_NORMAL 是窗口打开状态选项的常量, 它的值是 1, 为了代码简洁, 可以再简化: 
WinExec('rundll32 shell32,Control_RunDLL', 1);

本例效果图:

---

代码文件:

---

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    Button6: TButton;
    Button7: TButton;
    Button8: TButton;
    Button9: TButton;
    Button10: TButton;
    Button11: TButton;
    Button12: TButton;
    Button13: TButton;
    Button14: TButton;
    Button15: TButton;
    Button16: TButton;
    Button17: TButton;
    Button18: TButton;
    Button19: TButton;
    Button20: TButton;
    Button21: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
    procedure Button7Click(Sender: TObject);
    procedure Button8Click(Sender: TObject);
    procedure Button9Click(Sender: TObject);
    procedure Button10Click(Sender: TObject);
    procedure Button11Click(Sender: TObject);
    procedure Button12Click(Sender: TObject);
    procedure Button13Click(Sender: TObject);
    procedure Button14Click(Sender: TObject);
    procedure Button15Click(Sender: TObject);
    procedure Button16Click(Sender: TObject);
    procedure Button17Click(Sender: TObject);
    procedure Button18Click(Sender: TObject);
    procedure Button19Click(Sender: TObject);
    procedure Button20Click(Sender: TObject);
    procedure Button21Click(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL', 1);              {控制面板}
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL access.cpl', 1);   {辅助功能选项}
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL appwiz.cpl', 1);   {添加或删除程序}
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL desk.cpl', 1);     {显示 属性}
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL firewall.cpl', 1); {Windows 防火墙}
end;

procedure TForm1.Button6Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL hdwwiz.cpl', 1);   {添加硬件向导}
end;

procedure TForm1.Button7Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL inetcpl.cpl', 1);  {Internet 属性}
end;

procedure TForm1.Button8Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL intl.cpl', 1);     {区域和语言选项}
end;

procedure TForm1.Button9Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL irprops.cpl', 1);  {无线链接}
end;

procedure TForm1.Button10Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL joy.cpl', 1);      {游戏控制器}
end;

procedure TForm1.Button11Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL main.cpl', 1);     {鼠标 属性}
end;

procedure TForm1.Button12Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL mmsys.cpl', 1);    {声音和音频设备 属性}
end;

procedure TForm1.Button13Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL ncpa.cpl', 1);     {网络连接}
end;

procedure TForm1.Button14Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL netsetup.cpl', 1); {网络安装向导}
end;

procedure TForm1.Button15Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL nusrmgr.cpl', 1);  {用户帐号}
end;

procedure TForm1.Button16Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL odbccp32.cpl', 1); {ODBC 数据源管理器}
end;

procedure TForm1.Button17Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL powercfg.cpl', 1); {电源选项 属性}
end;

procedure TForm1.Button18Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL sysdm.cpl', 1);    {系统属性}
end;

procedure TForm1.Button19Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL telephon.cpl', 1); {电话和调制解调器选项}
end;

procedure TForm1.Button20Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL wscui.cpl', 1);    {Windows 安全中心}
end;

procedure TForm1.Button21Click(Sender: TObject);
begin
  WinExec('rundll32 shell32,Control_RunDLL wuaucpl.cpl', 1);  {自动更新}
end;

end.

窗体文件:

---

object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 227
  ClientWidth = 430
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'Tahoma'
  Font.Style = []
  OldCreateOrder = False
  Position = poDesktopCenter
  PixelsPerInch = 96
  TextHeight = 13
  object Button1: TButton
    Left = 8
    Top = 8
    Width = 132
    Height = 25
    Caption = #25511#21046#38754#26495#31383#21475
    TabOrder = 0
    OnClick = Button1Click
  end
  object Button2: TButton
    Left = 8
    Top = 39
    Width = 132
    Height = 25
    Caption = #36741#21161#21151#33021#36873#39033
    TabOrder = 1
    OnClick = Button2Click
  end
  object Button3: TButton
    Left = 8
    Top = 70
    Width = 132
    Height = 25
    Caption = #28155#21152#25110#21024#38500#31243#24207
    TabOrder = 2
    OnClick = Button3Click
  end
  object Button4: TButton
    Left = 8
    Top = 101
    Width = 132
    Height = 25
    Caption = #26174#31034' '#23646#24615
    TabOrder = 3
    OnClick = Button4Click
  end
  object Button5: TButton
    Left = 8
    Top = 132
    Width = 132
    Height = 25
    Caption = 'Windows '#38450#28779#22681
    TabOrder = 4
    OnClick = Button5Click
  end
  object Button6: TButton
    Left = 8
    Top = 163
    Width = 132
    Height = 25
    Caption = #28155#21152#30828#20214#21521#23548
    TabOrder = 5
    OnClick = Button6Click
  end
  object Button7: TButton
    Left = 8
    Top = 194
    Width = 132
    Height = 25
    Caption = 'Internet '#23646#24615
    TabOrder = 6
    OnClick = Button7Click
  end
  object Button8: TButton
    Left = 150
    Top = 8
    Width = 132
    Height = 25
    Caption = #21306#22495#21644#35821#35328#36873#39033
    TabOrder = 7
    OnClick = Button8Click
  end
  object Button9: TButton
    Left = 150
    Top = 39
    Width = 132
    Height = 25
    Caption = #26080#32447#38142#25509
    TabOrder = 8
    OnClick = Button9Click
  end
  object Button10: TButton
    Left = 150
    Top = 70
    Width = 132
    Height = 25
    Caption = #28216#25103#25511#21046#22120
    TabOrder = 9
    OnClick = Button10Click
  end
  object Button11: TButton
    Left = 150
    Top = 101
    Width = 132
    Height = 25
    Caption = #40736#26631' '#23646#24615
    TabOrder = 10
    OnClick = Button11Click
  end
  object Button12: TButton
    Left = 150
    Top = 132
    Width = 132
    Height = 25
    Caption = #22768#38899#21644#38899#39057#35774#22791' '#23646#24615
    TabOrder = 11
    OnClick = Button12Click
  end
  object Button13: TButton
    Left = 150
    Top = 163
    Width = 132
    Height = 25
    Caption = #32593#32476#36830#25509
    TabOrder = 12
    OnClick = Button13Click
  end
  object Button14: TButton
    Left = 150
    Top = 194
    Width = 132
    Height = 25
    Caption = #32593#32476#23433#35013#21521#23548
    TabOrder = 13
    OnClick = Button14Click
  end
  object Button15: TButton
    Left = 291
    Top = 8
    Width = 132
    Height = 25
    Caption = #29992#25143#24080#21495
    TabOrder = 14
    OnClick = Button15Click
  end
  object Button16: TButton
    Left = 291
    Top = 39
    Width = 132
    Height = 25
    Caption = 'ODBC '#25968#25454#28304#31649#29702#22120
    TabOrder = 15
    OnClick = Button16Click
  end
  object Button17: TButton
    Left = 291
    Top = 70
    Width = 132
    Height = 25
    Caption = #30005#28304#36873#39033' '#23646#24615
    TabOrder = 16
    OnClick = Button17Click
  end
  object Button18: TButton
    Left = 291
    Top = 101
    Width = 132
    Height = 25
    Caption = #31995#32479#23646#24615
    TabOrder = 17
    OnClick = Button18Click
  end
  object Button19: TButton
    Left = 291
    Top = 132
    Width = 132
    Height = 25
    Caption = #30005#35805#21644#35843#21046#35299#35843#22120#36873#39033
    TabOrder = 18
    OnClick = Button19Click
  end
  object Button20: TButton
    Left = 291
    Top = 163
    Width = 132
    Height = 25
    Caption = 'Windows '#23433#20840#20013#24515
    TabOrder = 19
    OnClick = Button20Click
  end
  object Button21: TButton
    Left = 291
    Top = 194
    Width = 132
    Height = 25
    Caption = #33258#21160#26356#26032
    TabOrder = 20
    OnClick = Button21Click
  end
end