File names

I have a list box in a dialog that runs before my game runs and the list box displays all the bitmaps in the directory. It works, I''m happy, but there is one slight problem. When a file name is more than about 8 characters, it converts something like this "T_Mud_001.bmp" into "t_mud_~5.bmp". Is there something that i can change to make it display the full file name? Here is the code: //The sttributes of the files to find UINT uAttrs; //The thing that lets me specify which type of file LPCTSTR lpszFileSpec; //Include archived files uAttrs = DDL_ARCHIVE; //All files of type .bmp lpszFileSpec = "*.bmp*"; //This automatically searches and loads all files matching the //requirements SendDlgItemMessage( hWnd, ID_TILE_AVAILABLE, LB_DIR, //Adds filenames to the list box (WPARAM) (UINT) uAttrs, (LPARAM) (LPCTSTR) lpszFileSpec );