#pragma once

#ifndef	_INC_SHLWAPI
	#include < Shlwapi.h >
#endif
#pragma comment (lib, "shlwapi.lib")

#ifndef VER_H
	#include < WinVer.h >
#endif
#pragma comment (lib, "Version.lib ")



//-----------------------------------------------------------------------------
//		FileVersion
//-----------------------------------------------------------------------------

class FileVersion
{
	using XPCTSTR = const char *;

public:
	FileVersion ();
	FileVersion (XPCTSTR lpszFileName);
	virtual ~FileVersion ();

public:
	bool Open (IN XPCTSTR lpszFileName);
	void Close (void);

public:
	inline bool	IsValid () const;

	inline WORD	GetVersionMajor () const;
	inline WORD	GetVersionMinor () const;
	inline WORD	GetVersionBuild () const;
	inline WORD	GetVersionRevision () const;

	std::string GetVersionString () const;		//	return a string like 7.3.1.6

protected:
	bool GetVersionInfo (IN XPCTSTR lpszFileName);

protected:
	bool m_bValid;		// Version info is loaded	
	VS_FIXEDFILEINFO m_vsffi;	// Fixed File Info (FFI)
};


//	The format of the version number is as follows (optional components are shown in square brackets ([and]) :
//	major.minor [.build [.revision]]
// HIWORD (ffi.dwFileVersionMS) - major
// LOWORD (ffi.dwFileVersionMS) - minor
// HIWORD (ffi.dwFileVersionLS) - build
// LOWORD (ffi.dwFileVersionLS) - revision

inline bool FileVersion::IsValid (void) const
	{ return m_bValid; }

inline WORD FileVersion::GetVersionMajor (void) const
	{ ASSERT (m_bValid); return HIWORD (m_vsffi.dwFileVersionMS); }

inline WORD FileVersion::GetVersionMinor (void) const
	{ ASSERT (m_bValid); return LOWORD (m_vsffi.dwFileVersionMS); }

inline WORD FileVersion::GetVersionBuild (void) const
	{ ASSERT (m_bValid); return HIWORD (m_vsffi.dwFileVersionLS); }

inline WORD FileVersion::GetVersionRevision (void) const
	{ ASSERT (m_bValid); return LOWORD (m_vsffi.dwFileVersionLS); }