C++ (Cpp) MCStack::findstackd示例

MCStack *MCDispatch::findstackd(Window w)
{
	if (w == DNULL)
		return NULL;
	
	if (stacks != NULL)
	{
		MCStack *tstk = stacks;
		do
		{
			MCStack *foundstk;
			if ((foundstk = tstk->findstackd(w)) != NULL)
				return foundstk;
			tstk = (MCStack *)tstk->next();
		}
		while (tstk != stacks);
	}
	if (panels != NULL)
	{
		MCStack *tstk = panels;
		do
		{
			MCStack *foundstk;
			if ((foundstk = tstk->findstackd(w)) != NULL)
				return foundstk;
			tstk = (MCStack *)tstk->next();
		}
		while (tstk != panels);
	}

	// MW-2006-04-24: [[ Purify ]] It is possible to get here after MCtooltip has been
	//   deleted. So MCtooltip is now NULL in this situation and we test for it here.
	if (MCtooltip != NULL && MCtooltip->findstackd(w))
		return MCtooltip;
	return NULL;
}