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模拟键盘输入

Mon, 03 Sep 2007 08:03:00 GMT

  SetForegroundWindow(HApp);
  keybd_event(VK_MENU, MapVirtualKey(VK_MENU, 0), 0, 0);
  keybd_event(ORD('B'), MapVirtualKey(Byte('t'), 0), 0, 0);
  keybd_event(Byte('B'), MapVirtualKey(Byte('t'), 0), KEYEVENTF_KEYUP, 0);
  keybd_event(VK_MENU, MapVirtualKey(VK_MENU, 0), KEYEVENTF_KEYUP, 0);

//Ctrl: VK_CONTROL
//SHIFT:VK_SHIFT
//TAB:  VK_TAB
//ALT:  VK_MENU
//'A':  byte('A')

功能说明�Q?br /> 通过目标�E�序的句柄将该程序激�z�；
模拟鼠标按下
模拟鼠标抬�v

张树�?/a> 2007-09-03 16:03 发表评论

PostMessage和SendMessage区别

Mon, 03 Sep 2007 06:28:00 GMT

PostMessage 只是把消息放入队列，不管其他�E�序是否处理都返回，然后�l�箋执行 ;
�?/span> SendMessage 必须�{�待其他�E�序处理消息后才�q�回�Q��l�执行�?/span>
PostMessage 的返回��D��C?/span> PostMessage 函数执行是否正确 ;
�?/span> SendMessage 的返回��D��C�其他程序处理消息后的返回倹{�?/span>
使用�q�两个发送消息函数的最重要的是要看你的�E�序是否要对消息的滞后性关注否 ,PostMessage 会造成消息的滞后�?/span> , �?/span> SendMessage 则不�?/span> , 但如�?/span> SendMessage 消息处理��p�| , 则会造成�E�序停止 !

��Z��让大家能清楚的看��C��们的效果�Q�可以用下面的代码进行测试：

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    mmo1: TMemo;
    btn2: TButton;
    btn3: TButton;
    procedure btn2Click(Sender: TObject);
    procedure btn3Click(Sender: TObject);
  private
    { Private declarations }
    procedure testPostMessage;
    procedure testSendMessage;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses uFile;

{$R *.dfm}
var
  f: TFile;

procedure TForm1.btn2Click(Sender: TObject);
var
  i: Integer;
begin
  testPostMessage;
  for i := 0 to 5000 do
  begin
    mmo1.Lines.Add(IntToStr(i)+'======');
  end;
end;

procedure TForm1.btn3Click(Sender: TObject);
var
  i: Integer;
begin
  testSendMessage;
  for i := 0 to 5000 do
  begin
    mmo1.Lines.Add(IntToStr(i)+'======');
  end;
end;

procedure TForm1.testPostMessage;
var
  i: Integer;
begin
  PostMessage(f.Handle, WM_TEST, 0, 0);
  for i := 0 to 5000 do
  begin
    mmo1.Lines.Add(IntToStr(i))
  end;
end;

procedure TForm1.testSendMessage;
var
  i: Integer;
begin
  SendMessage(f.Handle, WM_TEST, 0, 0);
  for i := 0 to 5000 do
  begin
    mmo1.Lines.Add(IntToStr(i))
  end;
end;

initialization
  if f = nil then
    f := TFile.Create;

finalization
  if f <> nil then
    FreeAndNil(f);;

end.

unit uFile;

interface

uses
  Classes, Windows, Forms, Messages;

const
  WM_TEST = WM_USER + 1;

type
  TFile = class
  private
    FHandle: HWND;
  protected
    procedure WndProc(var Msg: TMessage);
  public
    procedure AfterConstruction; override;
    procedure BeforeDestruction; override;
    property Handle: HWND  read FHandle;
  end;

implementation

{ TFile }

procedure TFile.AfterConstruction;
begin
  inherited;
  FHandle := AllocateHWnd(WndProc);
end;

procedure TFile.BeforeDestruction;
begin
  inherited;
  DeallocateHWnd(FHandle);
end;

procedure TFile.WndProc(var Msg: TMessage);
begin
  if msg.Msg = WM_TEST then
  begin
    //消息处理内容
    Application.MessageBox('WM_TEST', 'WM_TEST', 0);
  end;
  windows.DefWindowProc(FHandle, Msg.Msg, Msg.wParam, Msg.lParam);
end;

end.

张树�?/a> 2007-09-03 14:28 发表评论

Sat, 01 Sep 2007 05:23:00 GMT

实现思�\分析�Q?br /> 1、找到目标程序的句柄�Q�可以通过�H�口的caption属性获取，使用

FindWindow(nil, 'app caption');

2、找��C��要控制的�l��g�Q�如Button,使用

FindWindowEx(ParentHandle, 0, nil, 'btn caption');

3、发送Windows消息控制目标�E�序

SendMessage( HEdt, BM_CLICK, 0, 0 );

下面是实现该功能的Delphi代码�Q?br />

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    btn1: TButton;
    mmo1: TMemo;
    edt1: TEdit;
    edt2: TEdit;
    btn3: TButton;
    lbl1: TLabel;
    lbl2: TLabel;
    btn4: TButton;
    procedure btn1Click(Sender: TObject);
    procedure btn3Click(Sender: TObject);
    procedure btn4Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses
  ShellAPI;

{$R *.dfm}
var
  HApp,
  HEdt : THandle;

procedure TForm1.btn1Click(Sender: TObject);
begin
  HApp := FindWindow(nil, PAnsiChar(edt1.text));
  mmo1.Lines.Add(IntToStr(HApp));

  HEdt := FindWindowEx(HApp, 0, nil, PAnsiChar(edt2.text));
  mmo1.Lines.Add(IntToStr(HEdt));
  SendMessage( HEdt, BM_CLICK, 0, 0 );
end;

procedure TForm1.btn3Click(Sender: TObject);
begin
  ShellExecute(handle, 'open', 'otherapp.exe',nil,nil, SW_SHOWNORMAL{SW_SHOWMAXIMIZED});
end;

procedure TForm1.btn4Click(Sender: TObject);
begin
  SendMessage( HApp, WM_CLOSE, 0, 0 );
end;

end.

张树�?/a> 2007-09-01 13:23 发表评论