unix_library.h

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: unix_library.h,v 1.2.28.3 2004/07/09 01:47:54 hubbe Exp $
 * 
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 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
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 * ***** END LICENSE BLOCK ***** */

#ifndef __UNIX_LIBRARY_H
#define __UNIX_LIBRARY_H

#include "hxtypes.h"

#define HMODULE ULONG32
#define HINSTANCE ULONG32

// just a large number used to identify bad handles
#define DL_MAX_NUM_LIBS 9000000L
#define DL_BAD_LIB_ID DL_MAX_NUM_LIBS + 1


/* Functions to load & release Shared Libraries */

/////////////////////////////////////////////////////////////////////////////
//
//	Function:
//
//		LoadLibrary()
//
//	Purpose:
//
//		Called to load a Unix Shared Library given the library's name
//
//	Parameters:
//
//		char* dllname
//
//	Return:
//
//		ULONG32
//		Returns a handle to the library which is used to identify which 
//		library is being accessed in subsequent calls to these functions.
//
ULONG32 LoadLibrary(const char* dllname);

/////////////////////////////////////////////////////////////////////////////
//
//	Function:
//
//		FreeLibrary()
//
//	Purpose:
//
//		Called to free a Shared Library. If this is not called the library
//		will be freed when the application quits.
//
//	Parameters:
//
//		HMODULE lib
//		This is an opaque handle identifying the library.
//
//	Return:
//
//		none
//
void FreeLibrary(HMODULE lib);

/////////////////////////////////////////////////////////////////////////////
//
//	Function:
//
//		GetProcAddress()
//
//	Purpose:
//
//		Called to get a function pointer in a Shared Library.
//
//	Parameters:
//
//		HMODULE lib
//
//		char* function
//		The function name
//
//	Return:
//
//		void*
//		The address of the function.
//

void* GetProcAddress(HMODULE lib, char* function);

#if defined RAFreeLibrary
#undef RAFreeLibrary
#endif
#define RAFreeLibrary(x) FreeLibrary(x)

#endif // ifndef