What is the use of DDV and DDX routines ?

Answer Posted / dharani

1)dialog data exchange (DDX)

All dialog data functions are done with C++ code. There are
no special resources or magic macros. The heart of the
mechanism is a virtual function that is overridden in every
dialog class that does dialog data exchange and validation.
It is always found in this form:

Copy Code
void CMyDialog::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX); // call base class

//{{AFX_DATA_MAP(CMyDialog)
<data_exchange_function_call>
<data_validation_function_call>
//}}AFX_DATA_MAP
}


2)dialog data validation (DDV)


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