How To Get Path of other Exe file in my MFC Code

[ovidiucucu]

Dont we have any Library Function to get the Path.

AFAIK there is no Windows API function to directly retrieve the full path given the executable/process (other than caller process) name.

Here is another example using PSAPI (Process Status API) functions EnumProcesses, GetModuleBaseName, and GetModuleFileNameEx:

#include <Psapi.h> 
#pragma comment(lib, "Psapi.lib")

BOOL GetProcessPath(LPCTSTR pszExeFile, CString& strPath)
{
   BOOL bFound = FALSE;
    const DWORD cb = 1024; // assume enough
    DWORD dwBytesReturned = 0;
    DWORD dwIDs[cb];
    if(::EnumProcesses(dwIDs, cb, &dwBytesReturned))
    {
      size_t size = dwBytesReturned / sizeof(DWORD);
      CString strBaseName;
      const DWORD dwSize = MAX_PATH + 1;
        for(size_t index = 0; index < size; index++)
        {
         HANDLE hProcess = ::OpenProcess(PROCESS_QUERY_INFORMATION|PROCESS_VM_READ, 
            FALSE, dwIDs[index]);
         ::GetModuleBaseName(hProcess, NULL, 
            strBaseName.GetBufferSetLength(dwSize), dwSize);
         strBaseName.ReleaseBuffer();
         if(!strBaseName.CompareNoCase(pszExeFile))
         {
            ::GetModuleFileNameEx(hProcess, NULL, 
               strPath.GetBufferSetLength(dwSize), dwSize);
            bFound = TRUE;
         }
         ::CloseHandle(hProcess);
        }
    }
   return bFound;
}

Not so much sweat like in case of using WMI, but sweat a little...