utiltydll.h

此为本书的配套光盘.本书不但由浅入深地讲解了软件保护技术

// 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 UTILTYDLL_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 
// UTILTYDLL_API functions as being imported from a DLL, wheras this DLL sees symbols
// defined with this macro as being exported.
#ifdef UTILTYDLL_EXPORTS
#define UTILTYDLL_API __declspec(dllexport)
#else
#define UTILTYDLL_API __declspec(dllimport)
#endif

//export the dll window handle to "sendmessage()"
extern UTILTYDLL_API HWND hDll;

//Message interface declaration
#define WM_SHOWMSGBOX WM_USER + 100

//Parameter declare
struct sShowMsgBoxParam{
	LPCTSTR sText;
	LPCTSTR sTitle;
	UINT	nStyle;
};
//Macro interface to programmer, it is invisible to enduser.
#define ShowMsgBox(_sText, _sTitle, _nStyle) \
{\
	sShowMsgBoxParam MsgBoxParam;\
	MsgBoxParam.sText  = (_sText);\
	MsgBoxParam.sTitle = (_sTitle);\
	MsgBoxParam.nStyle = (_nStyle);\
	::SendMessage(hDll,WM_SHOWMSGBOX,(WPARAM)&MsgBoxParam,0);\
}\
	 
UTILTYDLL_API void InternalShowMsgBox(WPARAM wParam, LPARAM);