read text file problem

Dear all,



i ;m writing smart device c++ applcation, and here is the code:

Code:

HANDLE hFile = CreateFile (L"\\Temp\\text.txt", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0,NULL);



if (hFile == INVALID_HANDLE_VALUE)

{

DWORD dw = GetLastError ();

}

else

{

DWORD dwRead = 0;

DWORD dwSize = GetFileSize (hFile, NULL);

 

if (dwSize == -1)
//;//Protokoll(LOG_ERROR, 0, "GetFileSize () fehlgeschlagen");

else if (dwSize == 0)

//;//Protokoll(LOG_ERROR, 0, "Die Datei ist leer");
else

{

 
dwSize = MAX_PATH;

char szFile[MAX_PATH] = "\0";


::ReadFile (hFile, szFile, dwSize, &dwRead, NULL);


wchar_t szFile2[MAX_PATH] = L"\0";

mbstowcs(szFile2,szFile,strlen(szFile)+1);

detailvalue.AddString(szFile2);

CloseHandle(hFile);

}

however the line added in the detailvalue listbox is empty line, does anyone can point out what's wrong with that?

thanks

Indent properly please. That looks like tomato juice to me.

I believe you need a drive letter for CreateFile. Also, there are a few other changes as indicated below:

Code:

HANDLE hFile = CreateFile (L"C:\\Temp\\text.txt", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0,NULL);
    if (hFile == INVALID_HANDLE_VALUE)
    {
        DWORD dw = GetLastError ();
        printf("CreateFile failed, error %d\n", dw);
    }
    else
    {
        DWORD dwRead = 0;
        DWORD dwSize = GetFileSize (hFile, NULL);
        if (dwSize == -1)
            printf("dwSize = -1\n"); //;//Protokoll(LOG_ERROR, 0, "GetFileSize () fehlgeschlagen");
        else if (dwSize == 0)
            printf("dwSize = 0\n");  //;//Protokoll(LOG_ERROR, 0, "Die Datei ist leer");
        else
        {
            dwSize = MAX_PATH;
            char szFile[MAX_PATH+1] = {0};            
            ::ReadFile (hFile, szFile, dwSize, &dwRead, NULL);
            wchar_t szFile2[MAX_PATH+1] = {0};
            mbstowcs(szFile2,szFile,strlen(szFile)+1);
            szFile2[MAX_PATH+1] = 0;            
            detailvalue.AddString(szFile2);
            CloseHandle(hFile);
        }
    }