if (info->tip_string_installed)
assert( info->tip_string_installed == False );   info->tip_string_installed = True;   if (info->doc_string_installed)
WidgetAddTipString(Widget w){	_XfeTipItemInfo		info = NULL;	assert( _XfeIsAlive(w) );	assert( XtIsWidget(w) );	/* Try to find the info */	info = WidgetGetInfo(w);		/* If the info is not found, allocate it and add it to the item */	if (info == NULL)	{		info = ItemAllocateInfo(w);		WidgetAddInfo(w,info);	}	assert( info != NULL );	/* If the tip string info was already installed, we are done */	if (info->tip_string_installed)	{		return info;	}	/* Mark the tip string info as installed */	info->tip_string_installed = True;	/* Add the stage one event handler */	WidgetAddStageOneEH(w);	return info;}