// AsyncFile
//
// asynchronous file loading

// InitAsyncFile
//
// initialize

void	InitAsyncFile(void);

// TermAsyncFile
//
// terminate

void	TermAsyncFile(void);

// LoadAsyncFile
//
// load <filename> into buffer

bool	LoadAsyncFile(char* filename, void* buffer, DWORD blen, void* key);

// GetNextCompletedAsyncFile
//
// return key of next completed file, else NULL

void*	GetNextCompletedAsyncFile(void);

// CancelAsyncFile
//
// cancel async file loading - if NULL, cancels all files

void	CancelAsyncFile(void* key);

// AsyncFile
//
// control block

struct AsyncFile
{
	HANDLE		hFile;		// file handle
	OVERLAPPED	Control;	// control block
	void*		hKey;		// user key
	AsyncFile*	prev;		// previous in chain
	AsyncFile*	next;		// next in chain
};

#define	MAX_ASYNC_FILES		16