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