Question

我使用带有参数lpCurrentDirectory的createprocess（）从我的应用程序创建一个进程，但它不起作用。它给出错误'系统找不到指定的路径'。我的代码是 CreateProcess( "XYZ\\bin\\run.bat", NULL, NULL, NULL, TRUE, CREATE_NEW_CONSOLE, NULL, "XYZ\\bin", &siStartupInfo, &piProcessInfo ) ; 我还通过使用GetCurrentDir（）获取curent目录并将XYZ\\bin添加到当前目录，给出了lpCurrentDirectory的完整路径，但它仍然不起作用。我希望我的批处理文件从lpCurrentDirectory运行。我不明白createProcess（）如何使用lpCurrentDirectory参数。是期望完整路径还是相对路径？

我也尝试使用硬编码完整路径但是，它显示相同的错误。其实我原来的代码是， `

char cCurrentPath[FILENAME_MAX];

if (!GetCurrentDir(cCurrentPath, sizeof(cCurrentPath)))
 {
    printf("\n error...");
 }

string path(cCurrentPath);
path += "\\XYZ\\bin";

wstring_convert<std::codecvt_utf8<wchar_t>> converter;          

wstring wstringData = converter.from_bytes(path); 

TCHAR lpszClientPath[500]= TEXT("XYZ\\bin\\run.bat /y");

if(::CreateProcess(NULL, lpszClientPath, NULL, NULL, TRUE,  CREATE_NEW_CONSOLE,NULL, wstringData.c_str(), &si, &pi) > 0)

`。

Answer 1

请查看this。您应该阅读整个帖子，因为它重申了在先前帖子中给出的答案。

Answer 2

此代码适用于Windows 7和Windows XP。

#include <Windows.h>

void showcd(wchar_t * caption)
{
    wchar_t buffer[512];

    if (GetCurrentDirectory(512, buffer) == 0)
    {
        DWORD err = GetLastError();
        MessageBox(NULL, L"GetCurrentDirectory failed", caption, MB_OK);
        ExitProcess(err);
    }

    buffer[511] = L'\0';
    MessageBox(NULL, buffer, caption, MB_OK);
}

void parent(wchar_t * cd)
{
    wchar_t cmd[512];
    wchar_t buffer[512];

    STARTUPINFO sinfo;
    PROCESS_INFORMATION pinfo;

    GetStartupInfo(&sinfo);

    showcd(L"Parent Process");

    if (GetCurrentDirectory(512, buffer) == 0)
    {
        DWORD err = GetLastError();
        MessageBox(NULL, L"GetCurrentDirectory failed", L"Parent Process", MB_OK);
        ExitProcess(err);
    }

    buffer[511] = L'\0';

    wcscat_s(buffer, 512, L"\\");
    wcscat_s(buffer, 512, cd);

    if (GetModuleFileName(NULL, cmd, 512) == 0)
    {
        MessageBox(NULL, L"GetModuleFileName failed", L"Parent Process", MB_OK);
        ExitProcess(GetLastError());
    }

    cmd[511] = L'\0';

    if (!CreateProcess(
        cmd, NULL, NULL, NULL, FALSE, 0, NULL, buffer, &sinfo, &pinfo
        ))
    {
        DWORD err = GetLastError();
        MessageBox(NULL, L"CreateProcess failed", L"Oops", MB_OK);
        ExitProcess(err);
    }
}

int CALLBACK WinMain( 
  _In_  HINSTANCE hInstance,
  _In_  HINSTANCE hPrevInstance,
  _In_  LPSTR lpCmdLine,
  _In_  int nCmdShow
) 
{
    wchar_t * cmdline;
    for (cmdline = GetCommandLine(); *cmdline; cmdline++)
    {
        if (*cmdline == L'*') 
        {
            parent(cmdline + 1);
            return 0;
        }
    }

    showcd(L"Child Process");
    return 0;
}

你可以这样测试：

C:\Documents and Settings\Administrator>dir
 Volume in drive C has no label.
 Volume Serial Number is 6080-CDD5

 Directory of C:\Documents and Settings\Administrator

13/12/2012  09:56 a.m.    <DIR>          .
13/12/2012  09:56 a.m.    <DIR>          ..
18/05/2012  03:10 p.m.    <DIR>          Desktop
20/06/2008  11:45 a.m.    <DIR>          Favorites
19/10/2010  02:54 p.m.    <DIR>          My Documents
20/06/2008  04:15 a.m.    <DIR>          Start Menu
               1 File(s)             43 bytes
               6 Dir(s)  29,912,666,112 bytes free

C:\Documents and Settings\Administrator>\appendtocurrentdirectory.exe *My Documents

Answer 3

CreateProcess用于启动进程，您必须传递可执行文件。你不能传递.bat。相反，您需要使用/ C选项启动cmd.exe并将批处理文件作为参数传递。

CreateProcess（）不使用lpCurrentDirectory

3 个答案: