check box

i have a code that ask a person what year they were born

i want to add a check box that says BC

when checked when the person hit submit
i want it to add 2001 to the year they put in

How is your dialogbox look like?

Want more code...

But if you only want to know how to use a Checkbox:

Insert one, adda member Variable and add this code into the OnCheck1 function:

{
if( n_boolBC == TRUE)
n_boolBC = FALSE;
else
n_boolBC = TRUE;
}

void CAgeDlg::OnBc()
{
// TODO: Add your control notification handler code here
if(m_Bc = true)
{
m_Say.SetWindowText("you are years old");
}
}

i want to make it say
void CAgeDlg::OnBc()
{
// TODO: Add your control notification handler code here
if(m_Bc = true)
{
m_Say.SetWindowText("you are %.0f years old",m_Bc1);
}
}

the m_Bc1 = m_Age + m_Year
m_Age = 2001
m_Year is user inputted