This is pretty difficult question to describe shortly. Anyway, apartments were introduced by Microsoft in NT 3.51 and late Windows 95 to isolate the problem of running legacy non-thread safe code into multithreaded environment. Each thread was “encapsulated” into so called single-threaded apartment. The reason to create an object in apartment is thread-safety. COM is responsible synchronize access to the object even if the object inside of the apartment is not thread-safe. Multithreaded apartments (MTA, or free threading apartment) were introduced in NT 4.0. Idea behind MTA is that COM is not responsible to synchronize object calls between threads. In MTA the developer is responsible for that. See “Professional DCOM Programming” of Dr. Grimes et al. or “Essential COM” of Don Box for the further discussion on this topic.
1 Introduction This paper describes the use of object-oriented software design patterns, as presented in Design Patterns: Elements of Reusable Object-Oriented Software by Gamma et al., within the Microsoft Foundation Class Library (MFC). MFC is used for implementing applications for Microsoft Windows operating systems. Because of the size of the MFC library, a complete analysis would have been beyond the scope of this assignment. Instead, we identified various possible locations for design patterns, using the class hierachy diagram of MFC, and studied the source carefully at these locations. When we did not find a pattern where we expected one, we have documented it anyway, with examples of how the particular problem could have been solved differently, perhaps more elegantly, using design patterns. We have included a brief introduction to MFC in Section 2 , as background information. The analysis has been split into three parts, with one section for each major design pattern ca...
Comments
might , probably very interested to know how one can manage to receive high yields .
There is no initial capital needed You may begin earning with as small sum of money as 20-100 dollars.
AimTrust is what you haven`t ever dreamt of such a chance to become rich
The firm incorporates an offshore structure with advanced asset management technologies in production and delivery of pipes for oil and gas.
Its head office is in Panama with affiliates around the world.
Do you want to become an affluent person?
That`s your chance That`s what you desire!
I feel good, I started to get real money with the help of this company,
and I invite you to do the same. If it gets down to select a correct companion utilizes your savings in a right way - that`s it!.
I make 2G daily, and my first deposit was 1 grand only!
It`s easy to start , just click this link http://wunomamy.arcadepages.com/iqijes.html
and lucky you`re! Let`s take this option together to become rich
I would like to burn a theme at here. There is such a thing, called HYIP, or High Yield Investment Program. It reminds of financial piramyde, but in rare cases one may happen to meet a company that really pays up to 2% daily not on invested money, but from real profits.
For quite a long time, I earn money with the help of these programs.
I don't have problems with money now, but there are heights that must be conquered . I get now up to 2G a day , and my first investment was 500 dollars only.
Right now, I managed to catch a guaranteed variant to make a sharp rise . Turn to my blog to get additional info.
[url=http://theblogmoney.com] Online investment blog[/url]
You may probably be very interested to know how one can manage to receive high yields on investments.
There is no need to invest much at first.
You may begin earning with a money that usually goes
for daily food, that's 20-100 dollars.
I have been participating in one project for several years,
and I'm ready to share my secrets at my blog.
Please visit my pages and send me private message to get the info.
P.S. I earn 1000-2000 per day now.
[url=http://theinvestblog.com] Online investment blog[/url]