Custom Window Class for View Window

#define CUSTOM_CLASSNAME _T("YourCustomClassName")

BOOL CMyView::PreCreateWindow(CREATESTRUCT& cs)
{

   // modify window styles and such here
   cs.style |= (WS_CLIPCHILDREN | WS_CLIPSIBLINGS);          
 
   // call base class PreCreateWindow to get the cs.lpszClass filled in with the MFC default class name
   if( !CView::PreCreateWindow(cs) )
     return 0;

   // Register the window class if it has not already been registered.
   
   WNDCLASS wndcls;
   HINSTANCE hInst = AfxGetInstanceHandle();

   if(!(::GetClassInfo(hInst, CUSTOM_CLASSNAME, &wndcls)))      // check if our class is registered
   {
     if(::GetClassInfo(hInst, cs.lpszClass, &wndcls))           // get default MFC class settings 
     {
	wndcls.lpszClassName = CUSTOM_CLASSNAME;                // set our class name

	wndcls.style |= CS_OWNDC;			        // change settings for your custom class
        wndcls.hbrBackground = NULL;

        if (!AfxRegisterClass(&wndcls))                         // register class
          AfxThrowResourceException();				// could not register class
     }
     else
       AfxThrowResourceException();				// default MFC class not registered
    }

    cs.lpszClass = CUSTOMVIEWCLASSNAME;                         // set our class name in CREATESTRUCT

    return 1;                                                   // we're all set
}