用CreateProcess读取Console程序的显示信息和返回结果

王朝delphi·作者佚名  2006-01-08
窄屏简体版  字體: |||超大  

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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