【正文】 s car, had cradled Weary39。s boxcar. He39。s. One of the best bodies belonged to the oldest American by far, a high school teacher from Indianapolis. H is name was Edgar Derby. He hadn39。s soul with sweet hopefulness, as though Billy might have good news for himnews he might be too stupid to understand, but good news all the same. Billy blac ked out as he walked through gate after gate. He came to what he thought might be a building on Tralfamadore. It wa s shrilly lit and lined with white tiles. It was on Earth, though. It was a delousing station through which all new prisoners had to pass. Billy did as he was told, took off his clothes. That was the first thing they told him to do on Tralfamadore, too. A German measured Billy39。 coats. Billy was the only one who had a coat from a dead civilian. So it goes. And Billy and the rest were encouraged to shuffle around their dinky train and into the prison camp. There wasn39。 firmly expressed wish that every American without an overcoat should take one. The coats were cemented together with ice, so the guards used their bayos as ice picks, pric king free collars and hems and sleeves and so on, then peeling off coats and handing them out at random. The coats were stiff and domeshaped, having conformed to their piles. The coat that Billy Pilgrim got had been crumpled and frozen in such a way, and was so small, that it appeared to be not a coat but a sort of large bla ck, threecornered hat. There were gummy stains on it, too, like crankcase drainings or old strawberry jam. There seemed to be a dead, furry animal frozen to it. The animal was in fact the coat39。 heaven on wheels. Againin that heaven on wheelsthe table was set. Dinner was served. At the base of the pole from which the light bulb hung were three seeming haystacks. The Americans were wheedled and teased o ver to those three stacks, w hich weren39。t liquid any more . He was stone. So it goes. Billy didn39。s boxcar door, and the door was opened. Billy Pilgrim was lying at an angle on the cornerbrace, selfcrucified, holding himself there with a blue and ivory claw hooked over the sill of the ventilator. Billy coughed when the door was opened, and when he coughed he shit thin gruel. This was in accordance with the Third Law of Motion according to Sir Isaac Newton. This law tells us that for every action there is a reaction which is equal and opposite in direction. This can be useful in rocketry. The train had arrived on a siding by a prison which was originally constructed as an extermination camp for Russian prisoners of war. The guards peeked inside Billy39。Who killed me? he would ask. And everybody knew the answer., which was this: Billy Pilgrim.39。s two children, children no more. They were gone forever. Billy was guided by dread and the lack of dread. Dread told him when to stop. Lack of it told him when to move again. He stopped. He went into his daughter39。t have ovaries or a uterus any more. They had been removed by a surgeonby one of Billy39。s backyard. The stripes were orange and black. Billy and his wife, Valencia, nestled like spoons in their big double bed. They were jiggled by Magic Fingers. Valencia didn39。再一次對幫助過我的老師，同學，朋友表示衷心的感謝，希望把今天的喜悅與你們一同分享。使我在設計中及時改正了錯誤，增添了信心。馬老師淵博的知識、敏銳的思維、深刻的洞察力、淡泊的心境、平易的待人方式和富有感召力的人格力量給我許多啟發(fā)和幫助，使我領略到一個著名學者的風采和高尚的情操，使我在學習和設計工作中，都受益匪淺，在畢業(yè)設計過程中，馬老師在每個階段都給予我細心的指導、提出寶貴的意見。 在本次畢業(yè)設計中，首先我衷心地感謝我的導師馬學文教授在我的設計中給我的悉心指導。 通過本次畢業(yè)設計，我基本掌握了 Visual Basic 編程，使我更進一步了解了面向對象編程的內涵，領略了 Visual Basic 的博大精深，以及其高效率的開發(fā)環(huán)境， Visual Basic 真的是很好的開發(fā)工具。 但是由于畢業(yè)設計時間較短，加之本人水平所限，此系統(tǒng)只能初步運用 Visual Basic 強大功能的一些基本控件，在創(chuàng)建這個系統(tǒng)時也遇到 過一些困難 ，是幾經調試才能正常 運行的。該系統(tǒng)經歷二十多年的發(fā)展，至今已具有相當高的水平，應用領域也在不斷擴大和深入。 結 論 經過三個多月的開發(fā)和設計， 打字 系統(tǒng)基本開發(fā)完成，其功能基本滿足 本 系統(tǒng)的需求，覆蓋所有需要計算機處理的業(yè)務； 功能齊全；數(shù)據(jù)共享；信息傳遞方便、快捷；操作簡單。測試軟件的運行性能。功能測試是系統(tǒng)測試最常用和必須的測 試，通常還會以正式的軟件說明書為測試標準。但同時去使得程序內“同一”函數(shù)的行為復雜化，測試時不得不考慮不同類型具體執(zhí)行的代碼和產生 的行為。繼承是面向以對程序的重要特點，繼承使得代碼的重用率提高，同時也使錯誤傳播的概率提高。 典型的面向對象程序具有繼承、封裝和多態(tài)的新特性，這使得傳統(tǒng)的測試策略必 須有所改變。 (2) 黑盒測試：也稱功能測試，將軟件看作黑盒子，在完全不考慮程序的內部結構和特性的情況下，測試軟件的外部特性，根據(jù)軟件的需求規(guī)格說明書設計測試用例，從程序的輸入和輸出特性上測試是否滿足設定的功能。 (1) 白盒測試：也稱結構測試，將軟件看作一個透明的白盒子，按照程序的內部結構和處理邏輯來選定測試用例，對軟件的邏輯路徑及過程進行測試，檢查它與設計是否符。 在 打字 系統(tǒng)中，所用到的測試方法有人工測試和機器測試。在 打字 系統(tǒng)中測試的對象不僅僅是源程序，而是整個軟件。 3．總調 將主控制調度程序和功能模塊聯(lián)結起來調試。 ③ 用錯誤資料調試。 ① 用正常資料調試。 5 系統(tǒng)運行與測試 調試 系統(tǒng)調試的目的是發(fā)現(xiàn)程序和系統(tǒng)中的錯誤并及時予以糾正。此處用編輯框的原 因 是 ： 用 編 輯 框 并 且 重 載 了 它 本 身 的 單 擊 右 鍵 函 數(shù)OnbuttonClicked()，使在它上面點擊右鍵時不會彈出菜單。為了屏蔽系統(tǒng)右鍵事件，創(chuàng)建一個繼承于 CEdit 的類 CMyEdit。然后可以從菜單攔下面的編輯框中看到自己本次練習的正確字數(shù)，錯誤字數(shù)，正確率等信息 。點擊此“開始”會彈出提示對話框，讓用戶注意切換到中文的全角，然后開始練習。 if(!m_bSingle)//不是單機，則是網(wǎng)上測試，上傳成績； { OnSend()。但“練習”是沒有時間限制的，學生想練多長時間就練多長時間。 練習 (1)開始 主要是為了讓學生練習 使用，和上面說的“單機”菜單差不多，主要是讓學生練習使用。而變量 m_bSingle則是進行“單機”練習的標記，此處將其設置為真表示進行“單機”測試，它的定義方法和 m_bPrac 一樣。//進行打字測試 } 在視圖類中 顯示此對話框，其中 m_bPrac 變量是用于標記是否為練習，它在視圖類的頭文件中定義為： bool m_bPrac，是一布爾型變量。//單機標記置真，進行單機練習 ()。 此對話框的實現(xiàn)代碼是： void CClientPortView::OnSingle() { // TODO: 在此添加命令處理程序代碼 m_bPrac=false。此功能的目的是讓學生自我測試和提高打字速度，從而為學生打字考試做好準備，使學生在脫離服務器的狀態(tài)下也能夠使用本軟件。本軟件上方使用一個 DialogBar 控件來輸出這些信息。 ⑹ 信息輸出。 WinPla 變量是用來存放當前窗口信息。若是單字符則不響應，若是漢字輸入則處理。當輸入文本框中有文本改變時調用這個處理函數(shù)，首先判斷是輸入還是退格，如果是退格則需要把光標后退的字符全部清除，如果是輸入則需要將輸入的字 符畫在文本框上面。因為 OnCreate()函數(shù)是一個創(chuàng)建窗口的程序，用它來創(chuàng)建一個窗口，所以在它里面設置的程序是隨著窗口的創(chuàng)建而創(chuàng)建。 ⑷ OnEditChange()函數(shù)是有當文本框內容改變時的處理函數(shù)，也是整個程序的核心所在。 Crray 類型變量 arrTextString 來存儲已經輸入過的行，CString 類型變量 strCurrentLine 來存儲正在輸入的行。 ⑶ 在 OnDraw 函數(shù)中首先要把整篇文章輸出。為了屏蔽系統(tǒng)右鍵事件，創(chuàng)建一個繼承于 CEdit 的類 CMyEdit。下面介紹程序中幾個關鍵地方： ⑴ 視圖類 CClientPortView 是基于 CScrollView 類，這樣可以實現(xiàn)屏幕滾動。該 系統(tǒng)在開發(fā)過程中以軟件工程學作指導，使系統(tǒng)保持了較好的構架，保證系統(tǒng)運行過程中的穩(wěn)定性，由于采用 C/S 模式進行網(wǎng)絡傳輸，同時對信息進行了加密信息不易被截獲修改；使用上采用了 B/S 模式，方便了用戶； 該軟件的核心功能是接受漢字輸入，并與已有的文章對照漢字輸入的正誤，在確定了的時間內結束輸入。計算機軟硬件技術和數(shù)字通信技術的最新成就給管理信息系統(tǒng)提供了有力的技術支持。本系統(tǒng)的管理模塊可以實現(xiàn)項目統(tǒng)計、網(wǎng)上評審、經費管理 、科研工作量統(tǒng)計、科研狀態(tài)表、科技活動管理、成果管理、專家資料管理、