Thread: UpdateData()

I saw today how to use UpdateData() to grab some text in an EditBox and put it in a MessageBox, when I click a button. But I don’t think I understand UpdateData() right.

I’ve defined a CString for the Edit Box in OnInitDialog() like this:

Code:

m_strread = "the last supper";
UpdateData(FALSE);

I don’t get what UpdateData() do here- could you please explain?

The lines for displaying that string in the MessageBox are:

Code:

UpdateData(TRUE);
AfxMessageBox(m_strread);

As I understand UpdateData() above tells to update the MessageBox’s data to EditBox’s data. Am I right?

Thanks.

DDX and DDV Routines.

If you really want to learn MFC, get a good book.

gg

UpdateData(TRUE) updates the corresponding member variable with the data in the control.
UpdateData(FALSE) does the opposite.

Kuphryn