Alternative way to create a custom control

This takes more code to produce than the CStatic-derived custom control.
So far, no advantages have yet been noticed with this approach.

1. Add a new class derived from generic CWnd. For base class, scroll to
  the very bottom to find generic CWnd. This will be our custom control
  class.

2. Add a member function called RegisterMe() to your custom control.
  Replace YourCustomCtrl with the name of your custom control.

    BOOL YourCustomCtrl::RegisterMe()
    {
        WNDCLASS wc;
        wc.style = 0;
        wc.lpfnWndProc = ::DefWindowProc; // must be this value
        wc.cbClsExtra = 0;
        wc.cbWndExtra = 0;
        wc.hInstance = (HINSTANCE)::GetModuleHandle(NULL);
        wc.hIcon = NULL;     // child window has no icon
        wc.hCursor = NULL;   // we use OnSetCursor
        wc.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
        wc.lpszMenuName = NULL;  // no menu
        wc.lpszClassName = "YourCustomCtrl";
        return AfxRegisterClass(&wc);
    }

3. Call RegisterMe() once and only once.

  Hint: make RegisterMe() a static function. Then create a static BOOL
    variable and then call RegisterMe() like so.

      BOOL MyCustom2::hasClass = MyCustom2::RegisterMe();

4. Add message map for WM_PAINT.

5. Add message map for WM_ERASEBKGND.

6. In OnPaint() paint your custom control a solid color.