nsIButton *toolTipButton = createSimpleButton(toolTipWidget, "tooltip",5, 5, 80, 0);
createSimpleButton(toolTipWidget, "tooltip",5, 5, 80, 0);
nsITooltipWidget* createTooltipWindow(nsIWidget * aWin,                      char * aTitle,                      int aX,                      int aY,                      int aWidth,                      EVENT_CALLBACK aHandleEventFunction) {  nsITooltipWidget *tooltip;  nsRect rect(aX, aY, aWidth, 40);    nsComponentManager::CreateInstance(kCTooltipWidgetCID, nsnull, kITooltipWidgetIID, (void**)&tooltip);  NS_CreateTooltipWidget((nsISupports*)nsnull,tooltip,rect,aHandleEventFunction);    nsIWidget* toolTipWidget;  if (NS_OK == tooltip->QueryInterface(kIWidgetIID,(void**)&toolTipWidget))  {    nsIButton *toolTipButton = createSimpleButton(toolTipWidget, "tooltip",5, 5, 80, 0);    NS_RELEASE(toolTipWidget);  }  return tooltip;}