CreateProcess 创建cmd窗口的问题

呃。。不能修改了。。再度PS:

　　编译环境，VS2008
　　运行环境，Win7

STARTUPINFO si = {sizeof(si)};
PROCESS_INFORMATION pi = {0};

    TCHAR szApp[MAX_PATH] = _T("cmd");
    if(::CreateProcess(NULL, szApp, NULL,NULL,FALSE,NULL,NULL,NULL,&si,&pi))
    {
CloseHandle(pi.hThread);
CloseHandle(pi.hProcess);
    }

我根据楼上的代码试了试，竟然是可行的。
尔后，逐行试了下，发现问题发生在这里
si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
不解。。不知道这里应该是如何？
不应该是STARTF_USESHOWWINDOW 吗？

呃。。又发现是STARTF_USESTDHANDLES　这个属性的影响。
哪位大大能解释一下。偶对进程是小白。

SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE; HANDLE hInRead;
HANDLE hOutWrite;
HANDLE hInWrite;
HANDLE hOutRead;
if (!::CreatePipe(&hInRead, &hInWrite, &sa, 0))
{
return;
} if (!::CreatePipe(&hOutRead, &hOutWrite, &sa, 0))
{
return;
}// ::CloseHandle(hInRead);
// ::CloseHandle(hOutWrite); PROCESS_INFORMATION pi;
STARTUPINFO si; si.cb = sizeof(STARTUPINFO);
::GetStartupInfo(&si);
si.hStdInput = hOutRead;
si.hStdError = hInWrite;
si.hStdOutput = hInWrite;
si.wShowWindow = SW_SHOW;
si.dwFlags = STARTF_USESHOWWINDOW| STARTF_USESTDHANDLES; TCHAR sz[] = _T("cmd");
if (!::CreateProcess(NULL, sz
,NULL,NULL,TRUE,NULL,NULL,NULL,&si,&pi))
{
return;
} if (!pi.hProcess)
{
return;
}
试试这段代码

回复楼上，不行，只有把STARTF_USESTDHANDLES去掉才行。

怎么可能，你是把我的代码复制过去的吗？我已经调试通过了，你的程序没有停下来，是因为你没有Waitif (!::CreateProcess(NULL, sz
,NULL,NULL,TRUE,NULL,NULL,NULL,&si,&pi))
{
return;
}
else
{
WaitForSingleObject(pi.hProcess, INFINITE);
}

void test()
{
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE; HANDLE hInRead;
HANDLE hOutWrite;
HANDLE hInWrite;
HANDLE hOutRead;
if (!::CreatePipe(&hInRead, &hInWrite, &sa, 0))
{
return;
} if (!::CreatePipe(&hOutRead, &hOutWrite, &sa, 0))
{
return;
}// ::CloseHandle(hInRead);
// ::CloseHandle(hOutWrite); PROCESS_INFORMATION pi;
STARTUPINFO si; si.cb = sizeof(STARTUPINFO);
::GetStartupInfo(&si);
si.hStdInput = hOutRead;
si.hStdError = hInWrite;
si.hStdOutput = hInWrite;
si.wShowWindow = SW_SHOW;
si.dwFlags = STARTF_USESHOWWINDOW| STARTF_USESTDHANDLES; TCHAR sz[] = _T("cmd");
if (!::CreateProcess(NULL, sz
,NULL,NULL,TRUE,NULL,NULL,NULL,&si,&pi))
{
return;
}
else
{
WaitForSingleObject(pi.hProcess, INFINITE);
} if (!pi.hProcess)
{
return;
}}
这个是我的测试函数

呃。。我看错了。是可以。但是请指点一下原因。。
输入不是应该是写的么？输出不是应该是读的么？
为啥要反过来？si.hStdInput =  hOutRead;
    si.hStdError = hInWrite;
    si.hStdOutput = hInWrite;

hStdOutput这个Output是要告诉控制台，它的输出消息应该写到哪里，相当于一个重定向，当然是要写到你的写句柄里面

哦。。那如果我要给控制台发命令，是应该::WriteFile(hOutRead,...)
这样么？读的话是
::ReadFile(hInWrite, ...)这样对么？

si.hStdInput = hOutRead;
si.hStdError = hInWrite;
si.hStdOutput = hInWrite;读写很简单，既然控制台从houtread读内容，你就往houtwrite里写
控制台把内容写到了hInWrite，当然就要从hinread里读这才是管道，从一端进就从另一端出，从另一端出就要往一端放

哦。。我就是想通过传入命令可以得到cmd的执行结果，在网上查的有说应该这么做的。有问题么？

msdn里有个例子，可以参考下。#include <windows.h>
#include <stdio.h>

VOID main(void)
{
    HANDLE hStdout, hNewScreenBuffer;
    SMALL_RECT srctReadRect;
    SMALL_RECT srctWriteRect;
    CHAR_INFO chiBuffer[160]; // [2][80];
    COORD coordBufSize;
    COORD coordBufCoord;
    BOOL fSuccess;

    // Get a handle to the STDOUT screen buffer to copy from and
    // create a new screen buffer to copy to.

    hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
    hNewScreenBuffer = CreateConsoleScreenBuffer(
       GENERIC_READ |           // read/write access
       GENERIC_WRITE,
       0,                       // not shared
       NULL,                    // default security attributes
       CONSOLE_TEXTMODE_BUFFER, // must be TEXTMODE
       NULL);                   // reserved; must be NULL
    if (hStdout == INVALID_HANDLE_VALUE ||
            hNewScreenBuffer == INVALID_HANDLE_VALUE)
    {
        printf("CreateConsoleScreenBuffer (%d)\n", GetLastError());
        return;
    }

    // Make the new screen buffer the active screen buffer.

    if (! SetConsoleActiveScreenBuffer(hNewScreenBuffer) )
    {
        printf("SetConsoleActiveScreenBuffer (%d)\n", GetLastError());
        return;
    }

    // Set the source rectangle.

    srctReadRect.Top = 0;    // top left: row 0, col 0
    srctReadRect.Left = 0;
    srctReadRect.Bottom = 1; // bot. right: row 1, col 79
    srctReadRect.Right = 79;

    // The temporary buffer size is 2 rows x 80 columns.

    coordBufSize.Y = 2;
    coordBufSize.X = 80;

    // The top left destination cell of the temporary buffer is
    // row 0, col 0.

    coordBufCoord.X = 0;
    coordBufCoord.Y = 0;

    // Copy the block from the screen buffer to the temp. buffer.

    fSuccess = ReadConsoleOutput(
       hStdout,        // screen buffer to read from
       chiBuffer,      // buffer to copy into
       coordBufSize,   // col-row size of chiBuffer
       coordBufCoord,  // top left dest. cell in chiBuffer
       &srctReadRect); // screen buffer source rectangle
    if (! fSuccess)
    {
        printf("ReadConsoleOutput (%d)\n", GetLastError());
        return;
    }

    // Set the destination rectangle.

    srctWriteRect.Top = 10;    // top lt: row 10, col 0
    srctWriteRect.Left = 0;
    srctWriteRect.Bottom = 11; // bot. rt: row 11, col 79
    srctWriteRect.Right = 79;

    // Copy from the temporary buffer to the new screen buffer.

    fSuccess = WriteConsoleOutput(
        hNewScreenBuffer, // screen buffer to write to
        chiBuffer,        // buffer to copy from
        coordBufSize,     // col-row size of chiBuffer
        coordBufCoord,    // top left src cell in chiBuffer
        &srctWriteRect);  // dest. screen buffer rectangle
    if (! fSuccess)
    {
        printf("WriteConsoleOutput (%d)\n", GetLastError());
        return;
    }
    Sleep(10000);

    // Restore the original active screen buffer.

    if (! SetConsoleActiveScreenBuffer(hStdout))
    {
        printf("SetConsoleActiveScreenBuffer (%d)\n", GetLastError());
        return;
    }
}

楼上的我看的不是很明白。这些东西以前没接触过，不过我试过GetStdHandle(STD_OUTPUT_HANDLE); 得到的是空。
我的程序是MFC应用程序

终于搞定了。。
CCmdProessDlg::CCmdProessDlg(CWnd* pParent /*=NULL*/)
: CDialog(CCmdProessDlg::IDD, pParent)
, m_strIn(_T(""))
, m_strOut(_T(""))
{
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE; HANDLE hInWrite;
HANDLE hOutRead;
if (!::CreatePipe(&m_hIn, &hInWrite, &sa, 0))
{
return;
} if (!::CreatePipe(&hOutRead, &m_hOut, &sa, 0))
{
return;
}
// ::CloseHandle(hInRead);
// ::CloseHandle(hOutWrite); PROCESS_INFORMATION pi = {0};
STARTUPINFO si = {sizeof(STARTUPINFO)};
::GetStartupInfo(&si);
si.hStdInput =  hOutRead;
si.hStdError = hInWrite;
si.hStdOutput = hInWrite;
si.wShowWindow = SW_HIDE;
si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES; TCHAR sz[MAX_PATH] = _T("cmd");
if (!::CreateProcess(NULL, sz
,NULL,NULL,TRUE,NULL,NULL,NULL,&si,&pi))
{
return;
} m_hProcess = pi.hProcess; ::CloseHandle(hOutRead);
::CloseHandle(hInWrite); ::CloseHandle(pi.hProcess);
::CloseHandle(pi.hThread);}
CCmdProessDlg::~CCmdProessDlg()
{
WriteCmd(_T("exit"));
CloseHandle(m_hIn);
CloseHandle(m_hOut);}
BOOL CCmdProessDlg::OnInitDialog()
{
CDialog::OnInitDialog(); // 将“关于...”菜单项添加到系统菜单中。 // IDM_ABOUTBOX 必须在系统命令范围内。
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
BOOL bNameValid;
CString strAboutMenu;
bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
ASSERT(bNameValid);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
} // 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
//  执行此操作
SetIcon(m_hIcon, TRUE); // 设置大图标
SetIcon(m_hIcon, FALSE); // 设置小图标 // TODO: 在此添加额外的初始化代码 UpdateIn(); return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE
}
void CCmdProessDlg::OnOK()
{ WriteCmd(m_strIn); UpdateIn();
}
void CCmdProessDlg::UpdateIn()
{
UpdateData();
Sleep(200); USES_CONVERSION;
DWORD dwData;
char sz[1024] = {0};
while (PeekNamedPipe(m_hIn, sz, 1024, &dwData, NULL, 0) && dwData > 0)
{
ReadFile(m_hIn, sz, dwData, &dwData, NULL); m_strOut += A2T(sz);
} dwData = GetLastError(); UpdateData(FALSE);
}void CCmdProessDlg::WriteCmd( LPCTSTR sCmd )
{
USES_CONVERSION; char sz[1024] = "";
strcpy(sz, T2A(sCmd));
strcat(sz, "\n"); DWORD dwBytes;
::WriteFile(m_hOut, sz, strlen(sz), &dwBytes, NULL); Sleep(200);
}
万岁。。感谢各位支持。

调试易

CreateProcess 创建cmd窗口的问题

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