Opening and reading files

[ChimpFace9000]

Could someone show me how to open and read files using the standerd win32 api? From what i know your supposed to use CreateFile to open a file, but i just couldnt figure out how to use it.

[Vlatko]

As parksie said, i really love these functions:

BOOL SaveFile(HWND hEdit, LPSTR pszFileName)
{
   HANDLE hFile;
   BOOL bSuccess = FALSE;

   hFile = CreateFile(pszFileName, GENERIC_WRITE, NULL, NULL,
      CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
   if(hFile != INVALID_HANDLE_VALUE)
   {
      DWORD dwTextLength;
      dwTextLength = GetWindowTextLength(hEdit);
      if(dwTextLength > 0)// No need to bother if there's no text.
      {
         LPSTR pszText;
         pszText = (char*)GlobalAlloc(GPTR, dwTextLength + 1);
         if(pszText != NULL)
         {
            if(GetWindowText(hEdit, pszText, dwTextLength + 1))
            {
               DWORD dwWritten;
               if(WriteFile(hFile, pszText, dwTextLength, &dwWritten, NULL))
                  bSuccess = TRUE;
            }
            GlobalFree(pszText);
         }
      }
      CloseHandle(hFile);
   }
   return bSuccess;
}

BOOL LoadFile(HWND hEdit, LPSTR pszFileName)
{
   HANDLE hFile;
   BOOL bSuccess = FALSE;

   hFile = CreateFile(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL,
      OPEN_EXISTING, NULL, NULL);
   if(hFile != INVALID_HANDLE_VALUE)
   {
      DWORD dwFileSize;
      dwFileSize = GetFileSize(hFile, NULL);
      if(dwFileSize != 0xFFFFFFFF)
      {
         LPSTR pszFileText;
         pszFileText = (char*)GlobalAlloc(GPTR, dwFileSize + 1);
         if(pszFileText != NULL)
         {
            DWORD dwRead;
            if(ReadFile(hFile, pszFileText, dwFileSize, &dwRead, NULL))
            {
               pszFileText[dwFileSize] = 0; // Null terminator
               if(SetWindowText(hEdit, pszFileText))
                  bSuccess = TRUE; // It worked!
            }
            GlobalFree(pszFileText);
         }
      }
      CloseHandle(hFile);
   }
   return bSuccess;
}

Ya, theForger wrote them, but i want to learn to use the two functions mentioned earlier.

[parksie]

http://msdn.microsoft.com/library/de...lesio_7wmd.htm