what is message loop how mfc does it internally?
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Answer Posted / mvs ravi kumar
Generally Windows programming is an event driven
programming. As and when something happens the some
message will be posted into message loop.
First of all, WinMain is the function which is being called
in windows application. This WinMain calls Initinstance of
that application and then enters the message loop.
Suppose take the case of SDI/MDI Application:
In SDI application messages are first sent it MainFrame
class, if there is no message handle in MainFrame then the
same message will be directed to CView. In the same way if
there is a handle for the message in View then the message
will be handled in the view other wise it will be directed
to CDocument. If there is message handle for the message
in Document then that handler function will be called
otherwise the message will be sent to CDocTemplate Class.
Then the message will be posed to another view if another
view exists otherwize the message will be sent to
DefWindowProc.
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