unit1.pas

《Delphi 7经典问题解析》源代码 第一到七章 基础篇源程序 应用篇源程序

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    btnExecute: TButton;
    procedure btnExecuteClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

function WinExecAndWait32(FileName: string; Visibility: Boolean): integer;
var
  zAppName: array[0..512] of char; //存放应用程序名
  StartupInfo: TStartupInfo;
  ProcessInfo: TProcessInformation;
  exitCode: Dword;
  aVisibility: integer;
begin
  StrPCopy(zAppName, FileName);
  FillChar(StartupInfo, Sizeof(StartupInfo), #0);
  //给StartupInfo结构体赋值
  StartupInfo.cb := Sizeof(StartupInfo);
  StartupInfo.dwFlags := STARTF_USESHOWWINDOW;
  if Visibility then
    aVisibility := 1
  else
    aVisibility := 0;

  StartupInfo.wShowWindow := aVisibility;
  //调用CreateProcess 创建进程，执行指定的可执行文件
  if not CreateProcess(nil, zAppName, nil, nil, false
    , CREATE_NEW_CONSOLE or NORMAL_PRIORITY_CLASS
    , nil, nil, StartupInfo, ProcessInfo) then
    Result := -1
  else
  begin
    //等待可执行文件退出
    WaitforSingleObject(ProcessInfo.hProcess, INFINITE);
    //得到进程终止状态码
    GetExitCodeProcess(ProcessInfo.hProcess, exitCode);
    result := Exitcode;
  end;
end;


procedure TForm1.btnExecuteClick(Sender: TObject);
begin
  WinExecAndWait32('notepad', True);
end;

end.