www.pudn.com > windows2000XP_WDM_DeviceDriverDevelopment_WuAnHe_C > CharFilterDll.h

 
// The following ifdef block is the standard way of creating macros which make exporting  
// from a DLL simpler. All files within this DLL are compiled with the FILTERDLL_EXPORTS 
// symbol defined on the command line. this symbol should not be defined on any project 
// that uses this DLL. This way any other project whose source files include this file see  
// FILTERDLL_API functions as being imported from a DLL, wheras this DLL sees symbols 
// defined with this macro as being exported. 
#ifdef FILTERDLL_EXPORTS 
#define FILTERDLL_API __declspec(dllexport) 
#else 
#define FILTERDLL_API __declspec(dllimport) 
#endif 
 
 
extern "C" { 
 
FILTERDLL_API DWORD Install(void); 
 
FILTERDLL_API DWORD Uninstall(void); 
 
}