GetDlgItemText(hWnd, IDC_FILENAME, szBitmapFilename, sizeof(szBitmapFilename)/sizeof(TCHAR));
I don't know what the last parameters means. (sizeof(szBitmapFilename)/sizeof(TCHAR))
what will be return after that operation ? (sizeof(szBitmapFilename)/sizeof(TCHAR))
I always meet this but I dont know understand.