add: sPtr->subviewsBag = WMCreateBag(8);
context: WMCreateSplitView(WMWidget *parent){    SplitView *sPtr;    sPtr = wmalloc(sizeof(SplitView));    memset(sPtr, 0, sizeof(SplitView));    sPtr->widgetClass = WC_SplitView;        sPtr->view = W_CreateView(W_VIEW(parent));    if (!sPtr->view) {	wfree(sPtr);	return NULL;    }    sPtr->view->self = sPtr;    WMSetViewNotifySizeChanges(sPtr->view, True);    WMCreateEventHandler(sPtr->view, ExposureMask|StructureNotifyMask			 |ClientMessageMask, handleEvents, sPtr);    WMCreateEventHandler(sPtr->view, ButtonPressMask|ButtonReleaseMask			 |EnterWindowMask|LeaveWindowMask, 			 handleActionEvents, sPtr);        WMAddNotificationObserver(handleViewResized, sPtr, 			      WMViewSizeDidChangeNotification, sPtr->view);        return sPtr;}