I didn't realize that string variable was destroyed after the function creating the thread returns. Now my DLL works great. Frankie, thank you so much.

no compiler error. when I calling the DLL from VBA, the function just cannot pass a file path to the thread. File path in thread displayed as "s", "c", etc.

"flt" is the file path from VBA. it's "C:\Downloads\HornSound.wav." Sorry, it's my mistake. the "loct" in MessageBox should be replaced with "flt". I spent some time try to figure it out. So as I said, I added " MessageBox(NULL, flt, "Message1", NULL); " before "CloseHandle(hThread);". both messagebox can correctly display my file path "C:\Downloads\HornSound.wav." I also found if I replaced "MessageBox" with "Sleep(3000)" before "CloseHandle(hThread);" MessageBox in thread can correctly display my file path "C:\Downloads\HornSound.wav." if I add nothing and just removed "CloseHandle(hThread);", MessageBox in thread can also correctly display my file path "C:\Downloads\HornSound.wav." It seems I cannot close handle right after CreateThread. but that can cause memory leak?

No, my function is not a Unicode function. my file path is C:\Downloads\HornSound.wav. I found if I added the following " MessageBox(NULL, loct, "Message1", NULL); " before "CloseHandle(hThread);". Both MessageBoxes (both in the function and in the thread) can correctly display the file path. But if I removed "MessageBox" in the function, then the MessageBox in the thread cannot correctly display the file path. What is the problem?

MessageBox display is not file path, instead it showed something "s" or "c", "7". this is what I don't understand.

I wrote a DLL with VC6.0. I want to pass a LPCSTR type parameter (file path) to a thread. Here is the code: DWORD WINAPI ThreadFunc(LPVOID lpParam) { char* fileLoct = (char*)lpParam; MessageBox(NULL, fileLoct, "Message", MB_OK | MB_ICONINFORMATION); return 0; } void __stdcall StartThread(LPCSTR flt) { HANDLE hThread; hThread = CreateThread(NULL, 0, ThreadFunc, (void *)flt, 0, NULL); CloseHandle(hThread); } I tested it with MessageBox and found the path was not correct at all. How to correctly pass a LPCSTR type parameter to a thread in DLL? Thank you.

Thanks. I used GetFileTime. But I got another problem.Following is my code: TCHAR FilePath[MAX_PATH]; TCHAR NewPath[MAX_PATH]; WIN32_FIND_DATA fd; FILETIME mtime, local; SYSTEMTIME st; sprintf(FilePath, "%s\\*.*", strpath); HANDLE hFind = FindFirstFile(FilePath, &fd); if (hFind == INVALID_HANDLE_VALUE) return; do { if (fd.cFileName[0] != '.') { if (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { sprintf(NewPath, "%s\\%s", strpath, fd.cFileName); Findfiles(NewPath); } else { GetFileTime(hFind, NULL, NULL, &mtime); FileTimeToLocalFileTime( &mtime, &local ); FileTimeToSystemTime(&local, &st); CString time; time.Format("%02d/%02d/%04d", st.wMonth, st.wDay, st.wYear); AfxMessageBox(time); } } } while (FindNextFile(hFind, &fd)); FindClose(hFind); But my file last modofied time is 9/5/2006. The Time always dispalyed as 12/24/18186. what is wrong? Thanks a lot.

I used the following code to get file date time stamp. CFileFind ff; CFileStatus status; xxxxxx; xxxxxx; CString strFilePath = ff.GetFilePath(); CFile::GetStatus(strFilePath, status); CTime Ftime = status.m_mtime; Ftime is CTime object. But CTime has limit (Year <=2037 or so) is there another ways to get file date time stamp except CFile::GetStatus? Thanks