C / C++ / MFC

// Assigment operators
CEdit& operator=(const CString& strText);
CEdit& operator=(int nText);
CEdit& operator=(double dText);
 
// Conversion operators
operator CString() const;
operator int() const;
operator double() const;

m_editCtrl = "This value";
m_editCtrl = 123;
 
functionWhichTakesACStringParam(m_editCtrl);
int nValue = m_editCtrl + 10;

CEditEx& CEditEx::operator =(const CString& str)
{
    SetWindowText(str);
    return *this;
}

CEditEx& CEditEx::operator =(int nText)
{
    CString str;
    str.Format(_T("%d"), nText);
    SetWindowText(str);
    return *this;
}

CEditEx& CEditEx::operator =(double dText)
{
    CString str;
    str.Format(_T("%0.6f"), dText);
    SetWindowText(str);
    return *this;
}

CEditEx::operator int() const
{
    CString str;
    GetWindowText(str);
    TCHAR *temp;
    return (_tcstol(str, &temp, 10));
}

CEditEx::operator double() const
{
    CString str;
    GetWindowText(str);
    TCHAR *temp;
    return (_tcstod(str, &temp));
}

CEditEx::operator CString() const
{
    CString str;
    GetWindowText(str);
    return str;
}

what you are refering to is actually code an explorer band. There are is now an extensive amount of literature published about them, including a couple of articles on this very web site.

C# examples:
Extending Explorer with Band Objects using .NET and Windows Forms

Command Prompt Explorer Bar

VC++ examples:
the mother of all C++ examples
Creating DeskBands with an ATL Object Wizard

Internet Explorer Toolbar (Deskband) Tutorial

Hope this helps...


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it is not that they cannot find the answer, it is that they do not understand the question

unknown

#include <fstream>

using std::ifstream;

ifstream a("c:\file.txt");

int i;

a >> i;

#include <fstream>

using std::ofstream;

ofstream a("c:\file.txt");

int i = 7;

a << i;