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Today, I got the 3G test experience card from China Telecom. I went home and tried it. On an FTP server that is frequently downloaded, the speed is almost the same as that of China Telecom ADSL. 175 KB/s is caused by the server speed limit, I

select_read; fd_set select_write; fd_set select_ error; fd_set select_set_read; fd_set select_set_write; fd_set select_set_error; int Select _max_fd; #endif #ifdef use_solaris_devpoll int devpoll_fd; struct POLLFD *devpollfds; #endif #ifdef use_freebsd_kqueue int kq_fd; struct kevent *kq_results; bitset *kq_bevents; #endif #ifdef use_solaris_port int port_fd; #endif int (*reset) (struct fdevents *ev); Void (*free) (struct f

to return the events to be processed; Maxevents: Number of events that can be processed each time; Timeout: the timeout value for waiting for an I/O event; Number of events returned. Compared with the select function in the select model. 7. Example Program The following is an example of a simple echo server program. Although it is small and dirty, it also contains a simple timeout check mechanism. For the sake of simplicity, no error handling is performed. [CPP]View plaincopy // // A simp

. When the mouse is released, the container will stop there. In reality, there is a box on the table. I put my hands on the box and then move the box, stop the box with your hands and pull it away. The box won't move anymore. You can understand it! Don't think that the above is a bunch of nonsense. We can get a lot of information, which is summarized as follows: Drag = mouse Press + mouse move + mouse up This completes a drag-and-drop task. It turns out that this is the principle of drag-and-dro

Android Development event processing (Xiang tan), android When you click the screen, the first event you get is the outermost ViewRoot-> ViewGroup .... In this way, the ViewRoot directly ignores it. Let's take a look at the ViewGroup. We know that the outermost layer of the layout file is wrapped in five la S, the five la s are subclasses of ViewGroup. Therefore, ViewGroup (ViewRoot is directly ignored here) is the first method to trigger the event after ViewGroup obtains the event. dospatchTou

Event_add Append the event to the Ev_base in the current event, and the TV cannot be empty if it needs to be timedIntevent_add (struct event *ev, const struct Timeval *tv) {struct Event_base *base = ev->ev_base; Event_add will add the event to his ev_base member. Const struct EVENTOP *evsel = base->evsel; Epoll related function void *evbase = base->evbase; for Linux The corres

Slide conflict between the Android slide menu and the slideshow image, android slide To take over a project, you must modify the following question: a slideshow image cannot be moved manually. A manual slideshow image can only trigger a slide menu. Guess: the touch event of the viewpager control is intercepted by the SlidingMenu control (a slide menu, not a third-party project, but customized by the previous Developer. Based on this guess, I customize a ViewPager, rewrite dispatchTouchEvent, o

To take over a project, there is a problem that needs to be modified: The carousel diagram cannot be manually slid, and manual sliding of the carousel will only trigger a slide-off menu.Guess: The touch events of the Viewpager Control (Carousel map) were intercepted by the Slidingmenu control (slide-off menu, non-third-party project, which was the last developer-defined).Based on this speculation, I customize a viewpager, rewrite the dispatchtouchevent, onintercepttouchevent, and Ontouchevent, r

); Base = Event_base_new (); struct event Listen_ev; Event_set (listen_ev, SOCKFD, ev_read| Ev_persist, On_accept, NULL); Event_base_set (base, listen_ev); Event_add (listen_ev, NULL); Event_base_dispatch (base); return 0; } Then we will analyze the concrete implementation inside the library. First call the Event_init () function, before calling this function we need to know that there is a global variable in the file: struct Event_base *current_b

Touch Event-related methods Method functions ViewGroup Activity public boolean dispatchtouchevent (motionevent ev) Event distribution Yes Yes public boolean onintercepttouchevent (motionevent ev) Event interception Yes No public boolean ontouchevent (motionevent ev) Inc

Android event Distribution Methods related to Touch events in Android include dispatchTouchEvent (MotionEvent ev), onInterceptTouchEvent (MotionEvent ev), and onTouchEvent (MotionEvent ev) From this table, we can see that ViewGroup and its subclass can respond to the three methods related to Touch events, while Activity does not respond to onInterceptTouchEvent (

mousemove (EV ){Ev = EV | window. event;VaR mousepos = mousecoords (EV );} Function mousecoords (EV ){If (EV. pagex | eV. Pagey ){Return {X: eV