unitkillprocess.pas

Delphi Win32核心API参考光盘源码 本书包含了常用的Windows API函数

unit UnitKillProcess;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
const
  PROCESS_TERMINATE = $0001;    // OpenProcess constant
var
  ProcessHandle: THandle;       // a handle to the process
  ProcessId: Integer;           // the process identifier
  TheWindow: HWND;              // a handle to a window
begin
  {retrieve a handle to the window whose process is to be closed}
  TheWindow := FindWindow('TForm1', 'OpenProcess Example Window');

  {retrieve the window's process identifier}
  GetWindowThreadProcessId(TheWindow, @ProcessId);

  {retrieve a handle to the window's process}
  ProcessHandle := OpenProcess(PROCESS_TERMINATE, FALSE, ProcessId);

  {display a message}
  ShowMessage('Goodbye');

  {terminate the spawned process}
  TerminateProcess(ProcessHandle, 4);
end;

procedure TForm1.Button2Click(Sender: TObject);
var
  StartUpInfo: TStartUpInfo;        // holds startup information
  ProcessInfo: TProcessInformation; // holds process information
  CurDir: string;                   // holds the current directory
begin
  {initialize the startup info structure}
  FillChar(StartupInfo, SizeOf(TStartupInfo), 0);
  with StartupInfo do
  begin
    cb := SizeOf(TStartupInfo);
    dwFlags := STARTF_USESHOWWINDOW;
    wShowWindow := SW_SHOWNORMAL;
  end;

  {launch the spawned process}
  CurDir := ExtractFilePath(ParamStr(0))+'ProjectOpenProcess.exe';
  CreateProcess(PChar(CurDir), nil, nil, nil, False,
      NORMAL_PRIORITY_CLASS, nil, nil, StartupInfo, ProcessInfo);
end;

end.