members and constructors/destructors

The class CHertzEdit is derived from CEdit. It contains three member variables. The variable bNegativAllowed is a status flag that signals that the control allows negative values or not. It can only be set during the construction. The variable m_dValue saves the value of the control as number while the variable m_strValue contains the value as formatted string including the unit.

CHertzEdit::CHertzEdit()
{
        m_dValue=0.0;
        m_bNegativAllowed=TRUE;
        m_strValue= _T("");
}

CHertzEdit::CHertzEdit(BOOL bNegativAllowed)
{
        m_bNegativAllowed=bNegativAllowed;
        m_dValue=0.0;
        m_strValue= _T("");
}

CHertzEdit::CHertzEdit(const CHertzEdit& he)
{
        m_bNegativAllowed=he.m_bNegativAllowed;
        m_dValue=he.m_dValue;
        m_strValue=he.m_strValue;
}

CHertzEdit::~CHertzEdit()
{
}

BEGIN_MESSAGE_MAP(CHertzEdit, CEdit)
        //{{AFX_MSG_MAP(CHertzEdit)
        ON_WM_CHAR()
        ON_WM_KILLFOCUS()
        //}}AFX_MSG_MAP
END_MESSAGE_MAP()