mouse

一、概述 　　它分离对象的数据和行为，使用Visitor模式，可以不修改已有类的情况下，增加新的操作。 　　 主要解决： 稳定的数据结构和易变的操作耦合问题。 　　 注意事项： 访问者可以对功能进行统一，可以做报表、UI、拦截器与过滤器。 1.1、适用场景 　　1、对象结构中对象对应的类很少改变，但经常需要在此对象结构上定义新的操作。 　　2、需要对一个对象结构中的对象进行很多不同的并且不相关的操作，而需要避免让这些操作"污染"这些对象的类，也不希望在增加新操作时修改这些类。 1.2、优缺点 　　优点： 1、符合单一职责原则。 2、优秀的扩展性。 3、灵活性。 　　缺点： 1、具体元素对访问者公布细节，违反了迪米特原则。 2、具体元素变更比较困难。 3、违反了依赖倒置原则，依赖了具体类，没有依赖抽象。 1.3、类图角色及其职责 　　 　　访问者模式的角色和职责 　　 1、 访问者角色（Visitor）： 为该对象结构中具体元素角色声明一个访问操作接口。该操作接口的名字和参数标识了发送访问请求给具体访问者的具体元素角色。这样访问者就可以通过该元素角色的特定接口直接访问它。 　　 2、具体访问者角色（Concrete Visitor）： 实现每个由访问者角色（Visitor）声明的操作。 　　 3、元素角色（Element）： 定义一个Accept操作，它以一个访问者为参数。 　　 4

How could I programmatically trigger a left-click event on the mouse? Thanks. edit: the event is not triggered directly on a button. I'm aiming for the Windows platform. AlexanderMP https://web.archive.org/web/20140214230712/http://www.pinvoke.net/default.aspx/user32.sendinput Use the Win32 API to send input. Update: Since I no longer work with Win32 API, I will not update this answer to be correct when the platform changes or websites become unavailable. Since this answer doesn't even conform to Stackoverflow standards (does not contain the answer itself, but rather a link to an external, now

I need to fire an event when the mouse is above a PictureBox with the mouse button already clicked and held down. Problems: The MouseDown and MouseEnter event handlers do not work together very well. For instance once a mouse button is clicked and held down, C# will fire the MouseDown event handler, but when the cursor moves over the PictureBox the MouseEnter event does not fire, until the mouse button is realeased. When the mouse is pressed down most controls will then Control.Capture the mouse input. This means that all MouseMove events are sent to the original control that captured rather

I am using this code to read mouse events from the dev/input/event* in linux . #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <linux/input.h> #include <fcntl.h> #define MOUSEFILE "/dev/input/event4" int main() { int fd; struct input_event ie; if((fd = open(MOUSEFILE, O_RDONLY)) == -1) { perror("opening device"); exit(EXIT_FAILURE); } while(read(fd, &ie, sizeof(struct input_event))) { printf("time %ld.%06ld\ttype %d\tcode %d\tvalue %d\n", ie.time.tv_sec, ie.time.tv_usec, ie.type, ie.code, ie.value); } return 0; } It gives me the results in the format : time 1342517261

Short version: When using emacs' xterm-mouse-mode, Somebody (emacs? bash? xterm?) intercepts xterm's control sequences and replaces them with \0. This is a pain on wide monitors because only the first 223 columns have mouse. What is the culprit, and how can I work around it? From what I can tell this has something to do with Unicode/UTF-8 support, because it wasn't a problem 5-6 years ago when I last had a big monitor. Gory details follow... Thanks! Emacs xterm-mouse-mode has a well-known weakness handling mouse clicks starting around x=95. A workaround , adopted by recent versions of emacs,

can anyone think of a good way to ignore the single click that comes with a double-click in Java ? I'm looking to have different behaviors for each such that: single-click paints crosshairs on the click point double-click selects an object on the screen, but should not paint crosshairs on the click point ... can anyone think of a way to do this ? Some sort of timer set-up maybe ? An ideas appreciated :-) <disclaimer> ...and yes, I know I'm committing a most heinous usability / UI faux pas. </disclaimer> EDIT #2: Even though this works the delay due to the timer is maddening - I'm abandoning

This question already has an answer here: How do I disable right click on my web page? 23 answers I want to disable mouse right click on an HTML page. I have a page where user has to enter the details. I don't want the user to see the menu thats get displayed with the mouse right click. Rather I want to display a custom menu. I know there are some plugins available to do that. But my requirement does not need any plugins. It's unprofessional, anyway this will work with javascript enabled: document.oncontextmenu = document.body.oncontextmenu = function() {return false;} You may also want to