Re: Inheritance and MFC

"Tom Serface" <>
Tue, 3 Jul 2007 21:55:31 -0700
Hi Joe,

I didn't see where OP was trying to not use MFC. Looks like MFC is used all
over the place in his example.


"Joseph M. Newcomer" <> wrote in message

Well, if you made it a CObject, it is most definitely *not* independent of
MFC! And the
concept of including it in an MFC class seems more than a little strange.

In fact, the "using ... a few other MFC functions" means you are already
committed to MFC.

On Tue, 3 Jul 2007 17:30:28 -0700, "Nobody" <> wrote:

Hi Joe,

Why is a grid object not derived from CWnd in the first place?

I wanted to make the grid object independent of MFC.
The only reason I am using CObject is for Serialization.
I am using the registry and a few other MFC functions, OnDraw(),
OnMouseMove(), etc.
I should actually make several layers, but it is what it is for now.

I noticed that the more I use the grid object, the more I have to keep
adding scroll bars for pan, zoom, etc.
So, my idea was to make a CWnd GridSB Class that implements Scrollbars.
That class inherits from the Grid CObject class.
Then, I can leave the scroll bars inside of the CGrid Object, instead of
Creating scroll bars each time.

This is basically what I have.

CGrid : public CObject

CGridSB: public CGrid, public CWnd
   CScrollbar sb;
   SetScreenRect(){ Position Scrollbars(); }

   CGridSB sb;

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