static void ReadManifest(FILE *, DiskSet *);
static bool CheckManifest(const char *, DiskSet *);
static bool HasLegalExtension(const char *);
static void ReadManifest(FILE *, DiskSet *);
static bool CheckManifest(const char *, DiskSet *);
static bool HasLegalExtension(const char *);
static void DrawFilenames(SDL_Renderer *);
static void ShowWindow(int);
static void HideWindow(void);
static void DrawFilenames(SDL_Renderer *);
static void ShowWindow(int);
static void HideWindow(void);