Answer / sonali dongare

Subclassing is a technique that allows an application to
intercept and process messages sent or posted to a
particular window before the window has a chance to process
them. This is typically done by replacing the Window
Procedure for a window with application-defined window
procedure. I will devide this article into 3:

Subclassing in SDK programs,
Subclassing in MFC programs,
Reflected messages

Answer / somu

Subclassing is a standard technique in Windows programming
for customizing the behavior of a window. MFC wrap
subclassing into virtual function overriding.

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