用CreateProcess讀取Console程序的顯示信息和返回結果

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    OpenDialog1: TOpenDialog;
    Button2: TButton;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }

    function WinExecAndWait32(FileName:String;Visibility:Integer;var mOutputs:string):Cardinal;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
function TForm1.WinExecAndWait32(FileName:String;Visibility:Integer;var mOutputs:string):Cardinal;
var
  sa:TSecurityAttributes;
  hReadPipe,hWritePipe:THandle;
  ret:BOOL;
  strBuff:array[0..255] of char;
  lngBytesread:DWORD;
 
  WorkDir:String;
  StartupInfo:TStartupInfo;
  ProcessInfo:TProcessInformation;
begin
  FillChar(sa,Sizeof(sa),#0);
  sa.nLength := Sizeof(sa);
  sa.bInheritHandle := True;
  sa.lpSecurityDescriptor := nil;
  ret := CreatePipe(hReadPipe, hWritePipe, @sa, 0);

  WorkDir:=ExtractFileDir(Application.ExeName);
  FillChar(StartupInfo,Sizeof(StartupInfo),#0);
  StartupInfo.cb:=Sizeof(StartupInfo);
  StartupInfo.dwFlags:=STARTF_USESHOWWINDOW or STARTF_USESTDHANDLES;
  StartupInfo.wShowWindow:=Visibility;

  StartupInfo.hStdOutput:=hWritePipe;
  StartupInfo.hStdError:=hWritePipe;

  if not CreateProcess(nil,
    PChar(FileName),               { pointer to command line string }
    @sa,                           { pointer to process security attributes }
    @sa,                           { pointer to thread security attributes }
    True,                          { handle inheritance flag }
//    CREATE_NEW_CONSOLE or          { creation flags }
    NORMAL_PRIORITY_CLASS,
    nil,                           { pointer to new environment block }
    PChar(WorkDir),                { pointer to current directory name, PChar}
    StartupInfo,                   { pointer to STARTUPINFO }
    ProcessInfo)                   { pointer to PROCESS_INF }
    then Result := INFINITE {-1} else
  begin
//    Form1.Hide;
//    FileOpen(FileName,fmShareExclusive);
//    SetWindowLong(Application.Handle,GWL_EXSTYLE,WS_EX_TOOLWINDOW);
    ret:=CloseHandle(hWritePipe);
    mOutputs:=;
    while ret do
    begin
      FillChar(strBuff,Sizeof(strBuff),#0);
      ret := ReadFile(hReadPipe, strBuff, 256, lngBytesread, nil);
      mOutputs := mOutputs + strBuff;
    end;

    Application.ProcessMessages;
    WaitforSingleObject(ProcessInfo.hProcess, INFINITE);
    GetExitCodeProcess(ProcessInfo.hProcess, Result);
    CloseHandle(ProcessInfo.hProcess);  { to prevent memory leaks }
    CloseHandle(ProcessInfo.hThread);
//    Form1.Close;                        { exit application }
    ret := CloseHandle(hReadPipe);
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  Val:Cardinal;
  mOutputs:string;
  i:integer;
begin
  Val:=WinExecAndWait32(Edit1.Text,SW_SHOWNORMAL,mOutputs);
  Memo1.Lines.Add(******Result******+#13#10+IntToStr(Val));
  i:=1;
  while i<=length(mOutputs) do
  begin
    if mOutputs[i]=#10 then
    begin
      Insert(#13,mOutputs,i);
      i:=i+2;
    end
    else
      Inc(i);
  end;
  Memo1.Lines.Add(******Echo******+#13#10+mOutputs);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  OpenDialog1.InitialDir:=ExtractFilePath(ParamStr(0));
  if OpenDialog1.Execute then
    Edit1.Text:=Opendialog1.FileName;
end;

end.

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