事件驱动编程(Event-Driven Programming) 事件驱动的编程侧重于事件。 最终,程序的流程取决于事件。 到目前为止,我们处理顺序或并行执行模型,但具有事件驱动编程概念的模型称为异步模型。 事件驱动的编程取决于始终侦听新传入事件的事件循环。 事件驱动编程的工作取决于事件。 一旦事件循环,然后事件决定执行什么以及以什么...
Event-Driven Programming: Introduction, Tutorial, History http://Tutorial_EventDrivenProgramming.sourceforge.net Stephen Ferg (steve@ferg.org) Version 0.2 – 2006-02-08 This work is licensed under a Creative Commons Attribution License http://creativecommons.org/licenses/by/2.5/ The Creative Commons...
SDL_PollEvent will keep taking events off the queue until it is empty. When the queue is empty, SDL_PollEvent will return 0. So what this piece of code does is keep polling events off the event queue until it's empty. If an event from the event queue is an SDL_QUIT event (which i...
An Introduction to Programming Using Alice The OR Operation The OR operation is also a binary operation with two operands. c = a OR b If either a OR b is true, then the result is true. 100 th Anniverary Edition OR a T F B
EventDrivenProgramming Event-driven Programs Event-driven Programs •When users interact with computer they generate events (e.g., moving/clicking the mouse, typing, etc.)•Can respond to events by having listener for events addMouseListeners()addKeyListerners()•Use Java library the deals ...
an early programming language fromIBM, whose 1960s design concept was similar to event-driven programming discussed above, provided a built-in mainI/Oloop (known as the "program cycle") where the calculations responded in accordance to 'indicators' (flags) that were set earlier in the cycle. ...
Event-driven programming separates event-processing logic from the rest of a program's code. The event-driven approach contrasts with batch processing. Because event-driven programming is a general development approach rather than a type of language, event-driven apps can be created in any programmi...
EventDrivenActivity Attributes ToolboxBitmapAttributeActivityValidatorAttributeObsoleteAttribute Examples The following code example shows how to use theEventDrivenActivityto perform state machine transitions. This code example is part of the SimpleStateMachineWorkflow SDK sample from the StateMachineWorkflow.cs ...
Event Driven Programming - Community College of …:事件驱动的编程社区学院…of,编程,事件,event,事件驱动,事件驱动的,Event 文档格式: .ppt 文档大小: 1.65M 文档页数: 17页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: 文档分类: 论文--毕业论文 ...
Event-driven programming is aprogramming paradigmin which an application’s execution flow depends on events that occur rather than being strictly sequential. This paradigm is mostly used when building user interfaces and real-time applications, where an event such as a user’s action should trigger...