C / C++ / MFC

George_George wrote:

But when overriding only in one class, there is no compile error regarding the ambiguity issue, why??

George_George wrote:

"In that case i think preference is given to overridden method." -- you mean when calling D.Display, there are two choices,

1. D::B::Display;
2. D::C::A::Display.

But since (1) is "more" overridden than (2), (1) is preferred,

SRKSHOME wrote:

void Set(const char* name)
{

if(name!=NULL && strlen(name))
{
m_name = new char[strlen(name)+1];
strcpy(m_name,name);
}
else
delete [] m_name;
}

class test
{
	char* m_name;
public:
	test():m_name(NULL)
	{}
	void Set(const char* name)
	{
		// Leave the data untouched on invalid input
		if( name == NULL || 0 == strlen(name))
			return;

		if( m_name )
			delete []m_name;

		// Validate the pointer after allocating if necessary or put try/catch if exception enabled
		m_name = new char[strlen(name)+1]; 
		strcpy(m_name,name);
	}
	~test()
	{
		if( m_name ) 
                     delete [] m_name;
	}
	void display()
	{
		cout<<m_name<<endl;
	}
};

vcprog wrote:

if ( CopyFile(strFileName, cs, TRUE) != TRUE)

vcprog wrote:

else
{
AfxMessageBox("Success");
}
CopyFile(strFileName, cs,TRUE);

}

Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_

CopyFile(strFileName, cs,TRUE);

TCHAR m_Files[256];
    sfo.wFunc = FO_COPY;
    sfo.hwnd = NULL;
    sfo.pFrom = m_Files;
    sfo.pTo = "c:\\Pics";
    sfo.fFlags = FOF_SILENT | FOF_NOCONFIRMATION | FOF_NOCONFIRMMKDIR;

    hr = SHFileOperation(&sfo);

vcprog wrote:

The process cannot access the file because it is being used by another process.