file size

[KVR1]

For Opening the File:

HANDLE hFile; 
 
hFile = CreateFile("MYFILE.TXT",           // create MYFILE.TXT 
             GENERIC_WRITE,                // open for writing 
             0,                            // do not share 
             NULL,                         // no security 
             CREATE_ALWAYS,                // overwrite existing 
             FILE_ATTRIBUTE_NORMAL |       // normal file 
             FILE_FLAG_OVERLAPPED,         // asynchronous I/O 
             NULL);                        // no attr. template 

if (hFile == INVALID_HANDLE_VALUE) 
{ 
    ErrorHandler("Could not open file.");  // process error 
}

For Getting the file size:

DWORD dwSize = GetFileSize(
  hFile,          //Handle to the file whose size is to be returned. 
  NULL          //Pointer to the variable where the high-order word of the file size is returned. 
);
if (dwSize != INVALID_FILE_SIZE) 
    <here display ur requested file's size ( dwSize ) >

For Closing the File:
CloseHandle(hFile);

I think it gives better info. on ur problem!