C / C++ / MFC

AllocConsole();<br />
	//	Handles for the pipe ends<br />
	HANDLE hInRead, hInWrite,hInWriteDup;	//	For child's input pipe<br />
	HANDLE hOutRead,hOutWrite,hOutReadDup;	//	For child's output pipr<br />
	HANDLE hSavedOut=GetStdHandle(STD_OUTPUT_HANDLE);<br />
<br />
	SECURITY_ATTRIBUTES sa;<br />
	sa.bInheritHandle=TRUE;<br />
	sa.lpSecurityDescriptor=NULL;<br />
	sa.nLength=sizeof(SECURITY_ATTRIBUTES);<br />
<br />
	//	Creating pipe for child's input<br />
	CreatePipe(&hInRead,&hInWrite,&sa,0);<br />
	//	Creating pipe for child's output<br />
	CreatePipe(&hOutRead,&hOutWrite,&sa,0);<br />
<br />
	//Duplicate the Write handle so that it is not inheritable<br />
	DuplicateHandle(GetCurrentProcess(),hInWrite,GetCurrentProcess(),&hInWriteDup, 0,<br />
		FALSE,DUPLICATE_SAME_ACCESS);<br />
	//Duplicate the Read handle so that it is not inheritable<br />
	DuplicateHandle(GetCurrentProcess(),hOutRead,GetCurrentProcess(),&hOutReadDup, 0,<br />
		FALSE,DUPLICATE_SAME_ACCESS);<br />
	//Close the unnecessary handles<br />
	CloseHandle(hInWrite);<br />
	CloseHandle(hOutRead);<br />
	hInWrite=INVALID_HANDLE_VALUE;<br />
	hOutRead=INVALID_HANDLE_VALUE;<br />
<br />
	ZeroMemory( &si, sizeof(si) );<br />
    si.cb = sizeof(si);<br />
	si.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE);<br />
	si.hStdInput = hInRead;//GetStdHandle(STD_INPUT_HANDLE); <br />
	si.hStdError = GetStdHandle(STD_ERROR_HANDLE);<br />
	si.wShowWindow = SW_SHOW;<br />
	si.dwFlags = STARTF_USESTDHANDLES| STARTF_USESHOWWINDOW;// ;<br />
<br />
    ZeroMemory( &pi, sizeof(pi) );<br />
<br />
	<br />
	if(!::CreateProcess(NULL,"cmd",<br />
		NULL,NULL,FALSE,CREATE_NEW_PROCESS_GROUP,//CREATE_NEW_PROCESS_GROUP|<br />
		NULL,<br />
		NULL,&si,&pi))<br />
		AfxMessageBox("Process Error",MB_ICONERROR,0);<br />
	//SetConsoleMode(hInRead,ENABLE_LINE_INPUT|ENABLE_ECHO_INPUT);<br />
	//SetStdHandle(STD_INPUT_HANDLE,hInRead);<br />
	DWORD num;<br />
	if(!WriteFile(hInWriteDup,"Hi",3,&num,NULL))<br />
		AfxMessageBox("Write to pipe failed",MB_ICONERROR,0);