毕业论文--基于QT的电子画板功能的实现.doc

PAGE 本科毕业设计（论文） 基于QT的电子画板功能的实现 摘要 越来越多的嵌入式终端需要一个图形用户界面（GUI），良好的人机交互界面是嵌入式系统设计的一个关键技术，尤其是在嵌入式手持设备中，对嵌入式终端的实用性、美观性和视听娱乐性提出了更高的要求。而电子画板以其实用性和良好的观赏性逐渐成为嵌入式设备中不可或缺的组成部分。开发基于嵌入式终端的界面美观、功能丰富、交互性好的电子画板，具有一定的实用意义和价值。本文的目标是设计和实现嵌入式终端下的电子画板。论文首先介绍了Linux的优点和QT开发环境的搭建，着重分析了QT在软件开发中的编程机制，并根据嵌入式应用的特点对嵌入式终端下的电子画板进行了设计需求分析、具体界面的设计和整体结构的设计。本文根据电子画板的主要功能，设计并实现了电子画板的相关基本功能，如：新建、打开、删除、图片编辑、放大、缩小、还原、旋转和拉伸等。最后运行结果符合设计要求，方案可行。 关键词 嵌入式Linux QT 图形用户界面 电子画板 mini2440 The electronic drawing board function realization based on QT Abstract More and more embbeded Embedded Terminal need graphics user interface（GUI）. A good Human-Computer Interaction interface is the key technology of embedded system design. Higher demands of the practicality, aesthetics and audio-visual entertainment of embedded terminal are needed, especially in embbeded system handheld device. Electronic drawing board is becoming an integral part of embedded device for their pracicality and good viewing. It has some practical significance and value to develop a Electronic drawing board with beautiful interface, rich functions and good interaction based on embedded terminal.The aim of this paper is to design and implement a Electronic drawing board in the embeded terminal environment. This paper presented the advantage of Linux and the building of QT developing environment, focused on the programming mechanism of developing software with QT. It analysed the needs of the design, designed the specific interface and overall structure of Electronic drawing board in the embeded terminal environment according to features of embedded application.This project designed and implemented the relevant functions of Electronic drawing board, such as new file、open file 、edit、enlarge 、minify、restore Rotate、stretch the picture and so on .Finally, the results meet the design requirements. Key words Embedded Linux QT GUI Electronic drawing board mini2440 目 录 TOC \* MERGEFORMAT 1 引言 PAGEREF _Toc17314 1 1