如何++調用CreateProcess的::在C推出Windows可執行文件？

47

事情是這樣的：

STARTUPINFO info={sizeof(info)}; 
PROCESS_INFORMATION processInfo; 
if (CreateProcess(path, cmd, NULL, NULL, TRUE, 0, NULL, NULL, &info, &processInfo)) 
{ 
    WaitForSingleObject(processInfo.hProcess, INFINITE); 
    CloseHandle(processInfo.hProcess); 
    CloseHandle(processInfo.hThread); 
}

來源

2008-09-03 20:45:53

+0

的WaitForSingleObject的行應該是:: WaitForSingleObject的（processInfo.hProcess，INFINITE）（沒有 '＆'） – wimh 2008-11-27 21:32:29

+2

爲什麼要用::對WaitForSingleObject的，但不是在其他API調用指定的全局命名空間？ – 2008-11-30 13:30:49

16

有一個在 http://msdn.microsoft.com/en-us/library/ms682512(VS.85).aspx

一例只需更換argv[1]與恆定或包含程序變量。

#include <windows.h> 
#include <stdio.h> 
#include <tchar.h> 

void _tmain(int argc, TCHAR *argv[]) 
{ 
    STARTUPINFO si; 
    PROCESS_INFORMATION pi; 

    ZeroMemory(&si, sizeof(si)); 
    si.cb = sizeof(si); 
    ZeroMemory(&pi, sizeof(pi)); 

    if(argc != 2) 
    { 
     printf("Usage: %s [cmdline]\n", argv[0]); 
     return; 
    } 

    // Start the child process. 
    if(!CreateProcess(NULL, // No module name (use command line) 
     argv[1],  // Command line 
     NULL,   // Process handle not inheritable 
     NULL,   // Thread handle not inheritable 
     FALSE,   // Set handle inheritance to FALSE 
     0,    // No creation flags 
     NULL,   // Use parent's environment block 
     NULL,   // Use parent's starting directory 
     &si,   // Pointer to STARTUPINFO structure 
     &pi)   // Pointer to PROCESS_INFORMATION structure 
    ) 
    { 
     printf("CreateProcess failed (%d).\n", GetLastError()); 
     return; 
    } 

    // Wait until child process exits. 
    WaitForSingleObject(pi.hProcess, INFINITE); 

    // Close process and thread handles. 
    CloseHandle(pi.hProcess); 
    CloseHandle(pi.hThread); 
}

來源

2008-09-03 20:45:11 crashmstr

7

如果你的EXE恰好是一個控制檯應用程序，你可能有興趣在閱讀輸出和錯誤 - 對於這一點，我會虛心向您推薦下面這個例子：

http://support.microsoft.com/default.aspx?scid=kb;EN-US;q190351

這是一個有點代碼拗口，但我用這個代碼的變化產卵和閱讀。

來源

2008-09-03 21:02:11

7

在一個半相關的注意，如果你想開始有比你的當前進程更權限的進程（比如，啓動一個管理應用程序，這需要管理員權限，從運行作爲一個普通用戶的主要應用）你不能這樣做，使用在Vista上的CreateProcess（），因爲它不會觸發UAC對話框（假設已啓用）。不過，使用ShellExecute（）時會觸發UAC對話框。

來源

2008-09-03 22:13:45 Andy

9

如果你的應用是那麼的Windows GUI應用程序使用下面的代碼做的等待並不理想，因爲您的應用程序的消息將不會得到處理。對用戶來說，它看起來像你的應用程序已掛起。下面

WaitForSingleObject(&processInfo.hProcess, INFINITE)

有點像未經測試代碼可能會更好，因爲它會繼續處理Windows消息隊列和應用程序將保持響應：記住

//-- wait for the process to finish 
while (true) 
{ 
    //-- see if the task has terminated 
    DWORD dwExitCode = WaitForSingleObject(ProcessInfo.hProcess, 0); 

    if ( (dwExitCode == WAIT_FAILED ) 
     || (dwExitCode == WAIT_OBJECT_0) 
     || (dwExitCode == WAIT_ABANDONED)) 
    { 
    DWORD dwExitCode; 

    //-- get the process exit code 
    GetExitCodeProcess(ProcessInfo.hProcess, &dwExitCode); 

    //-- the task has ended so close the handle 
    CloseHandle(ProcessInfo.hThread); 
    CloseHandle(ProcessInfo.hProcess); 

    //-- save the exit code 
    lExitCode = dwExitCode; 

    return; 
    } 
    else 
    { 
    //-- see if there are any message that need to be processed 
    while (PeekMessage(&message.msg, 0, 0, 0, PM_NOREMOVE)) 
    { 
     if (message.msg.message == WM_QUIT) 
     { 
     return; 
     } 

     //-- process the message queue 
     if (GetMessage(&message.msg, 0, 0, 0)) 
     { 
     //-- process the message 
     TranslateMessage(&pMessage->msg); 
     DispatchMessage(&pMessage->msg); 
     } 
    } 
    } 
}

來源

2008-09-19 04:30:10 jussij

3

熊，使用WaitForSingleObject可以在這種情況下讓你陷入麻煩。以下是從我的網站上的一個提示中刪除：

問題出現是因爲您的應用程序有一個窗口，但不是泵送消息。如果生成的應用程序調用其中一個廣播目標（HWND_BROADCAST或HWND_TOPMOST）的SendMessage，則在所有應用程序都處理完消息之前，SendMessage將不會返回到新應用程序 - 但是您的應用程序無法處理消息因爲它是不抽的消息....所以新的應用程序鎖定，所以你的等待永遠不會成功....僵局。

如果你有過催生了應用程序的絕對控制權，那麼您可以採取的措施，如使用SendMessageTimeout，而不是SendMessage函數（例如，用於DDE灌頂，如果有人還在使用）。但有些情況會導致您無法控制的隱式SendMessage廣播，例如使用SetSysColors API。

唯一安全的方式這一輪是：

分裂出去的等待到一個單獨的線程，或
使用上等待超時和使用的PeekMessage在等待循環，以確保您抽取消息，或
使用MsgWaitForMultipleObjects API。

來源

2008-12-04 09:38:26

5

也許這是最完整的？ http://goffconcepts.com/techarticles/development/cpp/createprocess.html

來源

2011-05-02 20:55:40 pcunite

2

這是一個在Windows 10上工作的新例子。使用windows10 sdk時，您必須改用CreateProcessW。這個例子被評論，希望能夠自我解釋。

#ifdef _WIN32 
#include <windows.h> 
#include <stdio.h> 
#include <tchar.h> 
#include <cstdlib> 
#include <string> 
#include <algorithm> 

class process 
{ 
public: 

    static PROCESS_INFORMATION launchProcess(std::string app, std::string arg) 
    { 

     // Prepare handles. 
     STARTUPINFO si; 
     PROCESS_INFORMATION pi; // The function returns this 
     ZeroMemory(&si, sizeof(si)); 
     si.cb = sizeof(si); 
     ZeroMemory(&pi, sizeof(pi)); 

     //Prepare CreateProcess args 
     std::wstring app_w(app.length(), L' '); // Make room for characters 
     std::copy(app.begin(), app.end(), app_w.begin()); // Copy string to wstring. 

     std::wstring arg_w(arg.length(), L' '); // Make room for characters 
     std::copy(arg.begin(), arg.end(), arg_w.begin()); // Copy string to wstring. 

     std::wstring input = app_w + L" " + arg_w; 
     wchar_t* arg_concat = const_cast<wchar_t*>(input.c_str()); 
     const wchar_t* app_const = app_w.c_str(); 

     // Start the child process. 
     if(!CreateProcessW(
      app_const,  // app path 
      arg_concat,  // Command line (needs to include app path as first argument. args seperated by whitepace) 
      NULL,   // Process handle not inheritable 
      NULL,   // Thread handle not inheritable 
      FALSE,   // Set handle inheritance to FALSE 
      0,    // No creation flags 
      NULL,   // Use parent's environment block 
      NULL,   // Use parent's starting directory 
      &si,   // Pointer to STARTUPINFO structure 
      &pi)   // Pointer to PROCESS_INFORMATION structure 
     ) 
     { 
      printf("CreateProcess failed (%d).\n", GetLastError()); 
      throw std::exception("Could not create child process"); 
     } 
     else 
     { 
      std::cout << "[   ] Successfully launched child process" << std::endl; 
     } 

     // Return process handle 
     return pi; 
    } 

    static bool checkIfProcessIsActive(PROCESS_INFORMATION pi) 
    { 
     // Check if handle is closed 
      if (pi.hProcess == NULL) 
      { 
       printf("Process handle is closed or invalid (%d).\n"); 
       return FALSE; 
      } 

     // If handle open, check if process is active 
     DWORD lpExitCode = 0; 
     if(GetExitCodeProcess(pi.hProcess, &lpExitCode) == 0) 
     { 
      printf("Cannot return exit code (%d).\n", GetLastError()); 
      throw std::exception("Cannot return exit code"); 
     } 
     else 
     { 
      if (lpExitCode == STILL_ACTIVE) 
      { 
       return TRUE; 
      } 
      else 
      { 
       return FALSE; 
      } 
     } 
    } 

    static bool stopProcess(PROCESS_INFORMATION &pi) 
    { 
     // Check if handle is invalid or has allready been closed 
      if (pi.hProcess == NULL) 
      { 
       printf("Process handle invalid. Possibly allready been closed (%d).\n"); 
       return 0; 
      } 

     // Terminate Process 
      if(!TerminateProcess(pi.hProcess,1)) 
      { 
       printf("ExitProcess failed (%d).\n", GetLastError()); 
       return 0; 
      } 

     // Wait until child process exits. 
      if(WaitForSingleObject(pi.hProcess, INFINITE) == WAIT_FAILED) 
      { 
       printf("Wait for exit process failed(%d).\n", GetLastError()); 
       return 0; 
      } 

     // Close process and thread handles. 
      if(!CloseHandle(pi.hProcess)) 
      { 
       printf("Cannot close process handle(%d).\n", GetLastError()); 
       return 0; 
      } 
      else 
      { 
       pi.hProcess = NULL; 
      } 

      if(!CloseHandle(pi.hThread)) 
      { 
       printf("Cannot close thread handle (%d).\n", GetLastError()); 
       return 0; 
      } 
      else 
      { 
       pi.hProcess = NULL; 
      } 
      return 1; 
    } 
};//class process 
#endif //win32

來源

2017-10-19 13:56:11 Blue7

如何++調用CreateProcess的::在C推出Windows可執行文件？

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