We (Qt users) being widely used IRC to communicate. I hung out at the Freenode website #qt label to help you answer questions. One problem I often see (it makes me trouble), is about understanding Air Jordans Men's Qt thread mechanism and how to make them work properly write the relevant code. People posted their code, or code examples written, and I always end up feeling like this: You have the wrong! I think there are important things have to clarify, perhaps a little abrupt, but I have to point out that following this (hypothetical) class is an object-oriented application of the principle of error, it is also wrong for the Qt application. class MyThread: public QThread {public: MyThread () {moveToThread (this);} void run (); signals: void progress (int); void dataReady (QByteArray); public Nike Shoes slots: void doWork (); void timeoutHandler (); }; I questioned this code is the biggest lie in moveToThread (this); I've seen so many people use, and do not understand it done. So you might ask, what is it actually done? moveToThread () function notifies the Qt event handler is ready to make the extended signal (signal) and the groove (slot) call to action in the domain specified Air Jordan 10 thread. QThread is threaded interface, so we're telling this thread in 'inside it' to execute code. We should run before the thread to do these things. The code looks can even run, but it is very confusing, not QThread design usage (QThread all functions are written in the thread that created it should be called, rather Air Max for Men than QThread open thread). In my mind, moveToThread (this); because people see in some articles and use to spread. A quick Internet search can find such articles, all of these articles have similar situations following paragraph: Inheritance QThread working class adds to test code signals and slots, slot function and did not find the 'right thread' perform Google and found a moveToThread (this); then write 'looks really useful, so I added this line of code,' I think that these are derived from the first step. QThread is designed as an operating system interface and control point of the thread, rather than to write the code you want to execute threads in place. We (object-oriented programmer) write subclasses, because we want to expand or special features of the base class. I think the only reasonable cause inherited QThread class, add functionality QThread is not contained, for 2012 Cheap Nike Air Jordan 1 High Heels For Sale Beige Pink example, may be able to provide 2013 Air Jordan 4 (IV) Retro a memory pointer as the thread's stack, or you can add real-time interfaces Nike shoes online Lebron James Shoes and support. Download files, query the database, or do any code other operations should not be added to QThread subclass; it should be encapsulated in its own object. Generally, you can simply change the class inherits from QObject inherited QThread, and, under the name of the class may have to Air Jordan 13 modify. QThread class provides the start () signal, you can connect it to the place you need to perform initialization. To make your code actually run in the new thread scope, you need to instantiate an QThread object, and use moveToThread () function to allocate your object to it. You had the same moveToThread () to tell Qt Air Jordan 11 to your code to run a particular thread scope, so that the thread interfaces and code objects separated. If desired, you can now assign multiple objects of a class to a thread, or assign multiple objects from multiple classes into one thread. In other words, an instance with a thread-bound not necessary. I've heard many complaints about overly complicated to write multithreaded Nike Shoes Global code Qt. The original QThread class is abstract, it must Air Jordan 12 be inherited. But the Qt4.4 no longer the case, because QThread :: run () has a default implementation. Before, the only way is to use QThread inheritance. With the support of thread affinity, and extended signal slot connection mechanism, we have a more convenient way to use threads. We like the convenience, we want to use it. Unfortunately, the force was too late before I realized that people inherit QThread practices make it harder for new ways to spread. I have heard some complaints about the no synchronized sample programs and documentation to show people Air Jordan 1 how to use the least troublesome way of development conveniently. Today, the best resource I can cite is that I wrote a blog a few years ago. Disclaimer: you can see above all, of course, just a personal opinion. I spend a lot of energy in these classes above, and therefore on how to use and how not to use them, I have a very clear idea. Translator's Note: The latest Qt help document also provides examples and inherit QThread establish QThread two multithreaded implementations. According to the documentation and example code description of view, if you want to use the signal slots mechanism in sub-thread should be used are established ways QThread and object instances; if simply want to 180-159220 Nike LeBron 7 VII Soldier White Black Running Shoes use the child thread running blocking function, you can inherit and override QThread QThread :: run () function. Because after inheriting QThread, must () function call is displayed in QThread :: run QThread :: exec () to provide support for the news cycle mechanism, while QThread :: exec () itself will block the caller thread, so the need for the in the case of sub-thread signal slot mechanism, in the form of inheritance QThread not recommended, otherwise it would be more complicated programming. Further reading: QObject the Thread Affinity NOTE: Air Max for Women Thread Affinity: Thread relevance 'before deleting QThread objects, ensure that all of the objects within the thread did not destroy,' one is wrong, should be 'destroyed', Qt documentation related records as 'You must ensure that all objects created in a thread are deleted before you delete the QThread. 'Qt Developer About QThread roar - you are using the wrong