【正文】 Wesley ， 2004 ： 321323 ．更好的翻譯建議指 導(dǎo) 教 師 評(píng) 語(yǔ) 外文翻譯成績(jī)：指導(dǎo)教師簽字： 2011年12月10日注：1. 指導(dǎo)教師對(duì)譯文進(jìn)行評(píng)閱時(shí)應(yīng)注意以下幾個(gè)方面：①翻譯的外文文獻(xiàn)與畢業(yè)設(shè)計(jì)（論文）的主題是否高度相關(guān)，并作為外文參考文獻(xiàn)列入畢業(yè)設(shè)計(jì)（論文）的參考文獻(xiàn)；②翻譯的外文文獻(xiàn)字?jǐn)?shù)是否達(dá)到規(guī)定數(shù)量（3 000字以上）；③譯文語(yǔ)言是否準(zhǔn)確、通順、具有參考價(jià)值。Wesley，2004：321323．[2]．Michail A。 embedded system。軟件工程匯刊，2001， 。 [6] ． Memon AM ， Pollack ME ， So 行 h ML ． Hierarchical GUI test case generation using automated planning ． Software Engineering IEEE Transactions,200l ， No ． 2 ． V01 ． 27 ， 144 ． 155 ． [6].梅蒙A M，波拉克M E。費(fèi)道宜，維克多等。[5] ． Giannopoulos Nikos ， Roy Rajkumar ， Taratoukhine Victor, et al.[5].尼科斯文件系統(tǒng)層次標(biāo)準(zhǔn)集團(tuán)，2004年 5556。[3] ． Pusty Russell ， Daniel Quinlan Cipher Yeoh ． Filesystem Hierarchy Standard v2 ． 3 ． Filesystem Hierarchy Standard Group ， 2004 5556 ．[3].羅素，丹尼爾 韋斯利，2004：321323。 (2nd Edition)Addison 它的測(cè)試結(jié)果和分析表明，與其他嵌入式GUI系統(tǒng)相比，該系統(tǒng)具有更好的可移植性，準(zhǔn)備和定制，系統(tǒng)資源消耗少，對(duì)于相關(guān)軟件的發(fā)展有一定的參考價(jià)值。 IV ． CONCLUSIONⅣⅣ. 結(jié)論At present, the study of the embedded Linux system is booming ， and has occupied a lot of market share ， but the GUI system based on embedded Linux system is in the目前，嵌入式Linux系統(tǒng)的研究正在蓬勃發(fā)展，已經(jīng)占據(jù)了很大的市場(chǎng)份額，但在基于嵌入式Linux系統(tǒng)的GUI系統(tǒng)的發(fā)展階段，有許多重要問題有待解決。G. System performance This paper only tests the event — driven response speed, the results as shown in table 1 and table 2 ．本文僅測(cè)試事件驅(qū)動(dòng)響應(yīng)速度，結(jié)果如表1和表2所示。 F. Timer Timer is a very important ponent of the GUI ． When users need to timely process a certain operation it will be used, and also used in the system ． Users must first set the timer before using it, and it in TJMER module i5 expressed by the data structure TIMER, Timer limit value refers to that when the recording value of the timer greater than it ． it will send a MSGTIMER message to the window the tim定時(shí)器是一個(gè)GUI的非常重要的組成部分，當(dāng)用戶需要及時(shí)處理時(shí)將使用它，并在系統(tǒng)中使用一定的操作。 Initialization module only provides an overall GUI initialization function and a clearance function when terminating the GUI, thus the GUI entrance function 當(dāng)要終止GUI時(shí)，初始化模塊只提供了一個(gè)整體的GUI初始化函數(shù)和清除功能，initialize the various pans of the GUI through calling a GUI initialization function ． to make the GUI work normally ． The clearance function of GUI termination is responsible for the pletion of all relevant clearance work in the termination因此界面的入口函數(shù)可以通過調(diào)用GUI初始化函數(shù)初始化GUI的各種操作，使GUI正常工作。 4) Window movement: one of the basic requirements of the GUI system is that the window can be dragged so the window module provides a system call a GUI window sh4）窗口移動(dòng)：GUI系統(tǒng)的基本要求之一是可以拖動(dòng)窗口，為窗口模塊提供了一個(gè)系統(tǒng)調(diào)用GUI窗口顯示函數(shù)來完成這個(gè)功能，和發(fā)送MSG_SHOWMAINWIN消息could not see can be 。 and system variables ．3) Window display: window module provides system call a GUI window show function, when setting its mand parameter is SW_SHOW, a window orig3）窗口顯示：窗口模塊提供系統(tǒng)調(diào)用GUI窗口顯示功能，其命令參數(shù)設(shè)置初始值是SW_SHOW時(shí)，窗口顯示為無(wú)法看到。 To move a main window to the top laver ． it needs to display the part originally covered by other windows, and then update the impact of the movement on other window 若要移動(dòng)主要窗口到頂端。operations in the GUI ． such as the distribution of input messages ； processing the impact of the main window addition, display ， deletion, movement and other operations on the environment, and the pletion of the corresponding mapping operations through the distribution of the PAINT related news, calling the window module or GDI module functions ．2) Window deletion: in the GUI, it is often needed to delete a main window, for example, the dialog is occurred in the form of main window, so when it will be closed it should be deleted and users may have to independently remove a main window ． The window module provides the function to delete the window through system calling, and ultimately sends MEG_REMOVEMAINWIN message to the desktop ．2）窗口刪除：在GUI中它往往需要?jiǎng)h除一個(gè)主窗口，例如，對(duì)話框在主窗口的形式出現(xiàn)，所以它將被關(guān)閉，它應(yīng)該被刪除，用戶可能有獨(dú)立刪除一個(gè)主窗口。此外，顯示，刪除，移動(dòng)和其他對(duì)環(huán)境的業(yè)務(wù)，并完成相應(yīng)的映射操作，通過分布的PAINT的相關(guān)消息，調(diào)用窗口模塊或GUI模塊的功能 。 獲取信息信息類型識(shí)別消息數(shù)據(jù)分析消息數(shù)據(jù)分布是否輸出消息結(jié)束是否圖 4 消息循環(huán)流程圖3) Message distribution: after the messages removed from the message queue, they will be distributed to the corresponding window or control, to be responded by their 3）消息分布：從消息隊(duì)列中刪除消息后，他們將被分配到相應(yīng)的窗口或控件，被他們消息處理函數(shù)響應(yīng)。當(dāng)運(yùn)行在正常工作狀態(tài)時(shí)，GUI系統(tǒng)將初始化消息隊(duì)列 。 C Message and eventdriven mechanism submoduC消息和事件驅(qū)動(dòng)機(jī)制的子模塊 This submodule is mainly responsible far message receiving, distribution and routing operations ．該子模塊主要負(fù)責(zé)消息接收，分配和路由操作。Core module is shown as in figure 3 ．控制庫(kù)圖形資源核心機(jī)制模塊LALGAL初始化桌面子模塊驅(qū)動(dòng)模塊定時(shí)器圖 3．中心的圖形操作層結(jié)構(gòu)LAL and GAL is separately the hardware device input abstraction layer and the graphics output abstraction layer ， which are connected with the underlying inputoutput device to facilitate the GUI to connect different input and outpLAL和GAL是單獨(dú)的硬件設(shè)備輸入抽象層和圖形輸出抽象層,這是基本輸入輸出設(shè)備，以方便GUI連接到不同的輸入和輸出devices ， to achieve good portability and versatility of the GUI system ．設(shè)備,以達(dá)到良好的可移植性和GUI系統(tǒng)的多功能性。應(yīng)用程序編程接口Core 核心I/O interface I / O接口Figure 2. 圖2. Embedded GUI hierarchical structure 嵌入式GUI的層次結(jié)構(gòu)API is to provide the application programming interface functions for various GUI objects(such as windows, menus, etc ． ) ．API是應(yīng)用程序編程接口，提供各種GUI對(duì)象（如窗口，菜單等）。 The top of the window model is the user model which is also known as graphical user interface sense ． It includes two parts ： one is the user interface tool ； the other is the description of how to organize the various graphical objects窗口模型的頂部是用戶模式，這也被稱為圖形用戶界面，它包括兩部分：一種是用戶界面的工具，另一個(gè)是對(duì)如何在屏幕上組織各種圖形對(duì)象和和on the screen,and