=====> 怎样比较两个文件的版本???

[cd7809]

我在copy文件之前想比较一下两个文件的版本, 只有源文件版本高的时候才copy, 不知怎么处理, 非常感谢!!

[zhangyilan]

不知道一般的文件属性中是否有版本一项
关注

[cbc]

CString strPath="C:\\hello.txt";
CFile file;
file.Open(strPath,CFile::modeRead);
CFileStatus fstatus;
file.GetStatus(strPath,fstatus)


CFile::GetStatus
BOOL GetStatus( CFileStatus& rStatus ) const;

static BOOL PASCAL GetStatus( LPCTSTR lpszFileName, CFileStatus& rStatus );

Return Value

TRUE if the status information for the specified file is successfully obtained; otherwise, FALSE.

Parameters

rStatus

A reference to a user-supplied CFileStatus structure that will receive the status information. The CFileStatus structure has the following fields:

CTime m_ctime The date and time the file was created.


CTime m_mtime The date and time the file was last modified.


CTime m_atime The date and time the file was last accessed for reading.


LONG m_size The logical size of the file in bytes, as reported by the DIR command.


BYTE m_attribute The attribute byte of the file.


char m_szFullName[_MAX_PATH] The absolute filename in the Windows character set.
lpszFileName

A string in the Windows character set that is the path to the desired file. The path can be relative or absolute, but cannot contain a network name.

Remarks

The virtual version of GetStatus retrieves the status of the open file associated with this CFile object. It does not insert a value into the m_szFullName structure member.

The static version gets the status of the named file and copies the filename to m_szFullName. This function obtains the file status from the directory entry without actually opening the file. It is useful for testing the existence and access rights of a file.

The m_attribute is the file attribute. The Microsoft Foundation classes provide an enum type attribute so that you can specify attributes symbolically:

enum Attribute {
normal = 0x00,
readOnly = 0x01,
hidden = 0x02,
system = 0x04,
volume = 0x08,
directory = 0x10,
archive = 0x20
};

Example

//example for CFile::GetStatus
CFileStatus status;
extern CFile cfile;
if( cfile.GetStatus( status ) ) // virtual member function
{
#ifdef _DEBUG
afxDump << "File size = " << status.m_size << "\n";
#endif
}
char* pFileName = "test.dat";
if( CFile::GetStatus( pFileName, status ) ) // static function
{
#ifdef _DEBUG
afxDump << "Full file name = " << status.m_szFullName << "\n";
#endif
}

[TrueDexter]

如果是DLL的话可以用API:
是 GetDllVersion 或 GetFileVersion 之类的名字,你查一查吧.

[Rigel]

BOOL GetFileInformationByHandle(
HANDLE hFile, // handle to file
LPBY_HANDLE_FILE_INFORMATION lpFileInformation // buffer
);