计算机专业外文翻译文献翻译Word下载.docx
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计算机专业外文翻译文献翻译Word下载.docx
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WhatisVisualBasic6.0?
"
Visual"
referstotheuseofvisualizationofthedevelopmentofgraphicaluserinterface(GUI),generallydonotneedtopreparealargenumberofcodeinterfaceelementstodescribetheappearanceandlocation,andaslongasnecessarytodraganddropcontrolsonthescreentothecorrespondinglocationwillbe;
Basic"
referstotheBASIClanguage,VisualBasic6.0isbecausetheoriginalBASIClanguagedevelopedonthebasisofthatsofarincludeshundredsofphrasesFunctionandkeywords,andmanyWindowsGUIaredirectlyrelated.ProfessionalscanuseVisualBasic6.0toanyotherWindowsprogramminglanguagefunction,youbeginnersandseveralKeywordscanestablishpracticalapplication.
VisualBasic6.0providesalearningversion,ProfessionalEditionandEnterpriseEditiontomeettheneedsofdifferentdevelopers.LearningversionenablesprogrammerstoeasilydevelopWindowsandWindowsNTapplications;
ProfessionalEditionforprofessionalprogrammerstoprovidethecompletefunctionsofdevelopmenttools;
EnterpriseEditionallowsprofessionalstoformthegrouptocreateastrongdistributedapplications.
1VisualBasic6.0features
VisualBasic6.0isrunningontheWindowsplatformunderavisualizationofhigh-levelprogramminglanguages.Sinceinceptionin1991.VisualBasic6.0windows3.xtoadapttotheWindows95/98andWindowsNTetc.versionoftheoperatingsystem,widelyusedinordinarywindowcategory,databasemanagementcategory,datacommunicationsnetworkforsuchapplicationdevelopment.VisualBasic6.0asacomputervisualizationoftheseniorprogramminglanguage,thefollowingnotablefeatures:
(1)VisualBasic6.0inheritedtheBasiclanguageiseasyfeaturesinMicrosoftVisualBasic6.0developmentprocessneverforgethisroots,programming,evenforbeginnersisaprincipleofcomputer-illiteratepeople,alsoinarelativelyshortperiodoftimetoprepareaviableWindowsprocedures.
(2)BasedontheDosandtheenvironmentthantheprogramminglanguage,VisualBasic6.0thinkingaboutafundamentalchangebasedontheDosandtheenvironmentthantheprogramminglanguage,VisualBasic6.0thinkingaboutafundamentalchangeintheintroductionoftheVisualBasic6.0Object-orientedprogramdesign,theprocessdesignstafffromthetediousdetailsoftheproceduresdesignedtoextricatethemselves,programmingstaffduringprogramdevelopment,choosetherightpeopleneedtostructuretheirowninterface.Thenarrangementsforareceptionobjecttowhatinformationdowhatevertheycan.Withouttheneedtoconsiderspecifictargetsofwhattodo,whattodo,whattodoaftertheissue.
(3)VisualBasic6.0haspowerfuldatabasemanagementfunctionsVisualBasic6.0supportSQLdatabaseinquiries,VisualBasic6.0embeddeddatabasemanagementfunctionscanbemanipulatedalmostallofthedatabaseformat.
(4)DevelopmentofhighlyintegratedenvironmentisaVisualBasic6.0includingediting,debuggingprocedures,operatingprocedures,Compilingproceduressuchasfunctionalintegrationprogramdevelopmentenvironment(IDE)
(5)VisualBasic6.0adaptationinthedevelopmentofWindows-typeapplicationVisualBasic6.0sequencecontainsalotoffunctions,ordersandkeywords,MostWindowsgraphicaluserinterface-related,professionalscaneasilyusethemtodeveloppowerfulWindowsapplication.
2VisualBasic6.0Commoninternalcontrols
Controloptionscanbedividedintocheckboxcontrol(Checkbox)andtheradiobuttonscontrol(OptionButton).Checkboxcontrol,thegrouprevealedanumberofoptions,providedtheseoptionsTrue,FalseorYes,Nooption,userscanchoosewhichoneormore;
OptionButtoncontrols,theusercanchoosesinglegroup.OptionButtonandCheckboxcontrolsimilarfunctions,however,theyalsoexistbetweenthoseimportantdifferences:
thesamegroups,mayalsoselectmultipleCheckboxoptions;
ButtheycanonlychooseoneoptionButton.InFrame,PictureBoxFormcontainersorusebothoptionscontrols,Userscanusegroup.
(1)Radiobuttonscontrol(OptionButton)intheapplicationprocess,Sometimesusersneedssuchachoice:
Severaloptionsweretheonlychoice-species,andmustmakeachoice.Severalbecauseitismutuallyexclusive.Then,ontheneedtouseOptionButtonbuttonscontrol;
Figure1isagroupofbuttonscontrols,itonlyallowsusersinchoosingadrink,andmustelection-species.Controlbuttonsarealwaysagroupintheformof.Inacontrolgroup,onlyoneisalwaysbuttonsatselectedstate;
ifselectedbyoneofthem.Theremainingbuttonswillautomaticallyremovenon-selected.
(2)Checkboxcontrol(Checkbox)CheckboxcontrolandOptionButtonControlssomewhatsimilar,buttheuseofaverydifferent,CheckBoxcontrolsthatworkindependentlyofeachother,andtheyseparatedwithouttheslightestrelationshipofchecksandbalances.Allelectedornotonecanbeelected.Eachoneisanindependent,inwhichoneormoreoptional.
(3)FrameControlsControlframeworkisaverysimplecontrols,ItsmissionisthePaleozoicbodydrawingagreatsenseofthethree-dimensionalframework,Itisacommonattributecaptionattributetoshowthattheframeworkofthetitle.FrameControlsrarelyusedaloneanditisalwayswithothercontrolswiththeuse.Forexample,wecanintheTextBox,pictureframesandanexternaladdaframeworktoincreasethethree-dimensionaleffect,andsoon.
3VisualBasic6.0ProgrammingLanguage
Inhumansociallife,"
language"
ispronunciation,vocabularyandgrammarconstitutethesystem,person-to-persontransmissionofinformation,exchangeideastool."
ProgrammingLanguage"
(alsocalledalgorithmlanguage)isaword,phrase,andtherulesofgrammarconstitutethedirectivesystemandthecomputerisatoolfortheexchange.Useprogramminglanguage,weonlyneedtotellthecomputerwhenandunderwhatconditionstheydo,computerwillbeinaccordancewitharequesttoimplementadirective,andtheimplementationtellustheresults.
Fromthemachineryoftheimplementationperspective,theprogramminglanguagecanbedividedintotwomajorcategories:
lowlevellanguageandhigh-levellanguage.Lowlevellanguageisthemachine-orientedinstructions,differentmodelsoftheCPU(CentralProcessingUnit,acronymfortheCPU)havedifferentinstructionsystem.Lowlevellanguageisdividedintomachinelanguageandassemblerlanguage.Machine-languageinstructionscontainonlybythe"
0"
and"
1"
binarysymbolsformedbycertainlaws,machinescanbedirectlyexecuted.Thesedirectivesmemoryquitedifficult,forpeopleontheuseofspecificMnemonicrepresentatives’machineryordersresultinginassemblylanguage.Assemblerlanguageproceduresrequireonlyasimpletranslationmachinescanbeimplemented.Lowlevellanguageischaracterizedbyfasterprocedures,highefficiency,buttheprogrammerisrequiredtounderstandthemachinestructure,Programmingdifficultfornon-specialiststogetinvolved.Seniorlanguageiseasilyacceptedbythepeople;
closetohumanlanguagetodescribethewayconstituteInstructionSystem.Itneednotmachine-oriented,constitutesimple,usuallyonlyonehundredscoresofvocabulary,someoftherulesthatallowmemory,andeasytolearn.Programmingspeed.Peoplesay"
programminglanguages"
usuallyreferstohigh-levellanguage.Seniorlanguageproceduresrequiremorecomplexcompilerdirectivesinordertobecomemachines.Indifferentapplicationsoftenusedifferentlanguagedesignapplications.
VisualBasic6.0languageisacommonseniorprogramminglanguage.Computerapplicationareasisextensive,inordertomeetdifferentneeds,programminglanguage,oftenalsothecharacteristics.Forexample,asystemsuitableforthepreparationofthesoftware,facilitatescientificcomputing,databasemanagementisgoodat.Suitablegraphicdesignaswellasdedicatedtoartificialintelligence,therearealsosomelanguagealsohavemultiplefunctions.Fromtheapplicationperspective,wecanrightprogramminglanguageforthestrictclassification.Moreover,withthedevelopmentofcomputerscienceandapplicationoftherapidexpansionofvariouslanguageversionsareconstantlychanging,functioncontinuouslyupdateandenhance.Eachperiodhasanumberoflanguageinpopular,therewereanumberoflanguageinthedisappearance.Weshouldgraspprogramminglanguageinnature,regularityofthings.
Tomeetspecificneeds,computerworkersdevelopedavarietyofsoftwaretools.Forexample,wordprocessing,spreadsheet,graphics,multimediamanagement,andsystemsmanagementtoolssuchassoftware.Theyaresomespecialproceduresforcollection.Userinterfaceandinteractivecomputeroperation,whichiscalledamongthevarioussubroutines.
However,theworldiscomplexandconstantlychanging,itwillrequirethecomputertodotheworkofdiversity.Wecansaythatthemodernworldofcomputerdemandisendless.ComputermanufacturerscontinuetoproducemoreandmorepowerfulandfunctionalcomputersystemSoftwaredevelopershavebeendesignedtomeetdifferentneedsoftheapplication.Butnomatterhowthestructureofthecomputer,ithastodothework,itwasalwaysusedasaformofa"
withthecomputerexchange.Fromthisideaofthecomputersystemcanbeseen
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