add: if (W_VIEW_REALIZED(sPtr->view)) { WMRealizeWidget(sPtr->vScroller); }
context: WMSetScrollViewHasVerticalScroller(WMScrollView *sPtr, Bool flag){    if (flag) {	if (sPtr->flags.hasVScroller)	    return;	sPtr->flags.hasVScroller = 1;		sPtr->vScroller = WMCreateScroller(sPtr);	WMSetScrollerAction(sPtr->vScroller, doScrolling, sPtr);	WMSetScrollerArrowsPosition(sPtr->vScroller, WSAMaxEnd);	/* make it a vert. scroller */	WMResizeWidget(sPtr->vScroller, 1, 2);	reorganizeInterior(sPtr);		WMMapWidget(sPtr->vScroller);    } else {	if (!sPtr->flags.hasVScroller)	    return;	sPtr->flags.hasVScroller = 0;		WMUnmapWidget(sPtr->vScroller);	WMDestroyWidget(sPtr->vScroller);	sPtr->vScroller = NULL;	reorganizeInterior(sPtr);    }}