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Message Handling

Posted on 2003-11-23
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Last Modified: 2012-05-04
Hi All!

I am trying to convert a custom control written in C++ to Delphi. I do not have much C++ background. Can anybody tell me how to convert the below code to Delphi:

BEGIN_MESSAGE_MAP(CSomeClassEx, CSomeClass)
  ON_NOTIFY_REFLECT(A Notification, A Handler)
END_MESSAGE_MAP()

To handle messages received by the control I normally override WndProc method, but this notification is received by the Parent window of the control through WM_NOTIFY message. What is the best way to convert this code?

Thanks in advance...
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Question by:hacibumbala
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2 Comments
 

Accepted Solution

by:
hzg115 earned 375 total points
ID: 9808761
see the VCL source code

WMNotify(var Message: TWMNotify); message WM_NOTIFY;

procedure TWinControl.WMNotify(var Message: TWMNotify);
begin
  if not DoControlMsg(Message.NMHdr^.hWndFrom, Message) then inherited;
end;
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Author Comment

by:hacibumbala
ID: 9820206
I checked the VCL code and realized that correct declaration should be:

procedure CNNotify(var Message: TWMNotify); message CN_NOTIFY;

However, your information helped a lot. Thank you for the answer!
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