how to use DDV_MinMaxInt?

I'm doing a C++ MFC, I try to use DDV_MinMax but when I compile, I got the error message:
D:\codes\Dialog1\Dialog1Dlg.cpp(101) : error C2065: 'DDV_MinMax' : undeclared identifier

But I thought DDV_MinMax is a standard function? Can anyone help me out? THanks! Below is my code

Code:

void CDialog1Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);

	//{{AFX_DATA_MAP(CDialog1Dlg)
	DDX_Control(pDX, IDC_LIST_CTRL, m_cListCtrl);
	DDX_Control(pDX, IDC_NAMELIST, m_NameList);
	DDX_Text(pDX, IDC_FIRSTNAME, m_strFirstName);
	DDX_Text(pDX, IDC_LASTNAME, m_strLastName);
	DDX_CBIndex(pDX, IDC_TITLE, m_strTitle);
	DDX_Text(pDX, IDC_nocluster, m_nocluster);
	DDX_Control(pDX, IDC_CHARTCTRL, m_ChartCtrl);
	//}}AFX_DATA_MAP
	
	DDV_MinMax(pDX, m_strLastName, 0, 1);
}

A quick search on MSDN shows that there is a DDV_MinMaxInt and other DDV_MinMaxXXX functions. Perhaps you wanted one of those.

http://msdn.microsoft.com/library/de..._MinMaxInt.asp

Originally Posted by franziss

[...] Below is my code

Code:

void CDialog1Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);

	. . .
	
	DDV_MinMax(pDX, m_strLastName, 0, 1);
}

There is no such function DDV_MinMax, your probably mean DDV_MinMaxInt.

It seems your m_strLastName variable is of type CString, therefore I think you will not be able to use any of DDV_MinMaxXXX functions.

I think you should give us more details about your intention in case of string values.