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| Visual Basic Programming |
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| What is Visual Basic? (Definition #1) Visual Basic A version of BASIC from Microsoft specialized for Windows applications that has become very popular. It is similar to Microsoft's QuickBASIC, but is not 100% compatible with it. User interfaces are developed by dragging objects from the Visual Basic Toolbox onto the application form. (Definition #2) Visual Basic A derivative of BASIC that is optimized for creating applications for Microsoft Windows. It includes many tools to aid in graphical user interface (GUI) development. All Visual Basic objects support properties, methods, and events. Properties (characteristics/attributes) - An object data. Methods (actions) - Various procedures. event (something that occurs at runtime trigered by the user) - a user controled action. Here's a list of Visual Basic functions (each one of these functions perform a different task and you can use them in your controls code): Abs- Returns the absolute value of a number. Access- Enables input/output (I/O) to a file. AddItem- Adds an item to a ListBox or ComboBox control or adds a row to a Grid control. Doesn't support named arguments. AddNew- Creates a new record for a table-type or dynaset- type Recordset object. The AddNew method can also be used with the outdated Dynaset and Table objects. Alias- Alphanumeric- And- Used to perform a logical conjunction on two expressions. Any- Used at module level to declare references to external procedures in a dynamic-link library (DLL). App- The App object is a global object accessed with the App keyword. It determines or specifies information about the application's title, the path and name of its executable file and Help files, and whether or not a previous instance of the application is running. AppActivate- Activates an application window. Append- Adds a new data access object to a collection. AppendChunk- Appends data from a string expression to a Memo or OLE Object Field object in the Fields collection of a Recordset object. Arrange- Arranges the windows or icons within an MDIForm object. Doesn't support named arguments. As- Asc- Returns the character code corresponding to the first letter in a string. Atn- Returns the arctangent of a number. Avg- Calculates the arithmetic mean of a set of values contained in a specified field on a query. Base- Used at module level to declare the default lower bound for array subscripts. Beep- Sounds a tone through the computer's speaker. BeginTrans- BeginTransbegins a new transaction. Between- Binary- Used at module level to declare the default comparison method to use when string data is compared. ByVal- If you don't specify either the ByVal or ByRef keyword when passing an argument, your value is sent by reference. The default is ByRef. Call- Transfers control to a Sub procedure, Function procedure, dynamic-link library (DLL) procedure. Case- Executes one of several groups of statements, depending on the value of an expression. CCur CDbl ChDir ChDrive Chr Chr$ CInt Circle Clear Clipboard CLng Close Cls- Clears graphics and text generated at run time from a Form or PictureBox. Command Command$ CommitTrans CompactDatabase Compare- Used at module level to declare the default comparison method to use when string data is compared. Const Control Controls Cos Count- Calculates the number of records returned by a query. CreateDynaset CSng CStr CurDir$ Currancy CVar CVDate Data Date Date$ DateSerial DateValue Day Debug Delete Declare DefBool DefByte DefCur DefDate DefDbl DefInt DefLng DefObj DefSng DefStr DefVar DeleteSetting Dim- Declares variables and allocates storage space. Dir- Returns the name of a file or directory that matches a specified pattern or file attribute, or the volume label of a drive. Dir$ Do- Repeats a block of statements while a condition is True or until a condition becomes True. DoEvents- Yields execution so that the operating system can process other events. Double Drag Dynaset- A Dynaset object is the result of a query that can have updatable records. Like all recordsets, a Dynaset has records (rows) and fields (columns). A Dynaset object is a dynamic set of records you can use to add, change, and delete records from the underlying table or tables. A Dynaset can contain fields from one or more tables in one or more databases. Each Edit Else- Executes one of several groups of statements, depending on the value of an expression. ElseIf- Conditionally executes a group of statements, depending on the value of an expression. End- Ends a procedure or block. EndDoc EndIf- Conditionally executes a group of statements, depending on the value of an expression. Environ$ EOF Erase Erl Err Error Error$ Eqv ExecuteSQL Exit- Exits a block of Do...Loop, For...Next, Function, Sub, or Property code. Exp Explicit- Used at module level to force explicit declaration of all variables in that module. False- The False keyword has a value equal to 0. FieldSize FileAttr FileCopy FileDateTime FileLen Fix For- Repeats a group of statements a specified number of times. Form Format Format$ Forms FreeFile FreeLocks Function Get- Reads from an open disk file into a variable. GetAttr GetChunk GetData GetFormat GetText Global GoSub GoTo Hex Hex$ Hide- Hides an MDIForm or Form object but doesn't unload it. Hour If- Conditionally executes a group of statements, depending on the value of an expression. Imp In Input- Returns characters from an open sequential or binary file. Input$ Input# InputBox- Displays a prompt in a dialog box, waits for the user to input text or choose a button, and returns the contents of the text box. InputBox$ InStr Int Integer Is IsDate IsEmpty IsNull IsNumeric Kill LBound LCase LCase$ Left Left$ Len Let Level Lib Like Line LinePoke LinkExecute LinkRequest LinkSend Load LoadPicture Loc Local Lock LOF Log Long Loop LSet LTrim LTrim$ Max Me- The Me keyword in Visual Basic behaves like an implicitly declared variable. It is automatically available to every procedure in a class module. When a class can have more than one instance, Me provides a way to refer to the specific instance of the class where the code is executing. Using Me is particularly useful when you want to pass information about the currently executing instance of a class to a procedure in another module. For example, suppose you have the following procedure in a module: Mid Mid$ Min Minute MkDir Mod Month Move- Moves an MDIForm, Form, or control. Doesn't support named arguments. MoveFirst MoveLast MoveNext MovePrevious MoveRelative MsgBox- Displays a message in a dialog box, waits for the user to choose a button, and returns a value indicating which button the user has chosen. Name New NewPage Next- Repeats a group of statements for each element in an array or collection. NextBlock Not Nothing Now Null Oct Oct$ On Open OpenDataBase Option Or Outer Output Point Property Preserve Printer PrintForm Private PSet Public Put QBColor Random Randomize- Initializes the random-number generator. Read ReDim Refresh RegisterDataBase Rem RemoveItem RepairDatabase Reset Restore Resume Return- Branches to and returns from a subroutine within a procedure. RGB Right Right$ RmDir Rnd- Returns a random number. Rollback RSet RTrim RTrim$ SavePicture SaveSetting Scale Second Seek Select SendKeys Set- Assigns an object reference to a variable or property. SetAttr SetData SetDataAccessOption SetDefaultWorkspace SetFocus SetText Sgn Shared Shell Show- Displays an MDIForm or Form object. Doesn't support named arguments. Sin Single Space Space$ Spc Sqr Static- Used at procedure level to declare variables and allocate storage space. Variables declared with the Static statement retain their value as long as the code is running. StDev StDevP Step Stop- Suspends execution. Str- Returns a string representation of a number. Str$ StrComp String- Returns a repeating character string of the length specified. String$ Sub- Declares the name, arguments, and code that form the body of a Sub procedure. Sum- Returns the sum of a set of values contained in a specified field on a query. System Tab TableID Tan Text TextHeignt TextWidth Then- Conditionally executes a group of statements, depending on the value of an expression. Time Time$ Timer- Occurs when a preset interval for a Timer control has elapsed. The interval's frequency is stored in the control's Interval property, which specifies the length of time in milliseconds. TimeSerial TimeValue To Trim Trim$ True- The True keyword has a value equal to -1. Type TypeOf UBound UCase UCase$ Unload- Unloads a form or control from memory. Unlock Until- Repeats a block of statements while a condition is True or until a condition becomes True. Update UsingVal Var Variant VarType VarP Weekday Wend Width While- Repeats a block of statements while a condition is True or until a condition becomes True. Write Xor Year ZOrder Properties: Container- Returns or sets the container of a control on a Form. My Notes: [Steps To Making A Visual Basic Application] Step 1: Design The User Interface. (Select The Appropriate Controls- a control is any object including the form) Step 2: Set The Control Properties. Step 3: Write The Source Code For The Controls. Visual Basic Programers Interface: Code Window Control Button Form Window Location Measurement Menu bar Project Windows Properties Window Size Mesurement Toolbar Toolbox Window Before going any further: Decide what type of application is being designed. Do some research and figure out if you can afford the investment for the new project (if you have all the tools all you need is the know-how and put the time into it). Decide if you need more tools for your application (this will take a great deal of research and deciding. Does your application need a special tool(s) to add something to it? If your designing game you might want to look into game engines. Start building your application. My definition of a Form- A Form is actually a control. It is the platform for you to place other controls when making an application. A Form is classified (control type) as a container control. A form window is where you place your controls. To write code on a form or control you double click on it. The Code Windows loads and you can write the code for each event procedure you wish to execute. Their are to drop down controls in the code window. One is labled object and the other procedure. An object is the same thing as a control. A procedure is the same as Event Procedure. The control is like a variable (it contains things) and an event procedure is like a function. If code is writen for a particular controls event procedure and if that particular event occures in the program the code for that event executes. If no code is writin inside the code window for a particular event than that event never exicutes, it merely remains an obtion inside the code window. Each control has a seperate list (although some have identical events)of possible event procedures and each control has different functionality. As a Visual Basic programmer You pick what event you want to occure. If the event that you want to occure doesn't exist than you can design your own control and add it to the toolbox. My definition of a toolbox- The toolbox contains all the available controls for you to place in your application. Controls are the most important resource to a windows program. Controls make up the whole user interface. [Links section] Visual Basic Tutorials and Home Page Links: http://www.cgvb.com/links/lpage.boa/LINK http://www.geocities.com/SiliconValley/Bay/5707/vbasic.html http://141.217.54.54/be101/tutorial/welcome.htm http://www.free-ed.net/fr03/fr030202.htm http://www.vb-web-directory.com/tutorial/t_genera.shtml http://www.vbhelp.net/pages/links.html/ http://www.geocities.com/SiliconValley/Park/8710/vbisland.html http://www.best.com/~jlockard/vb.htm http://www.vbthunder.com/ http://www.vircom.ca/pcorner/p_basic.htm http://www.dogma.demon.co.uk/linx.htm http://ourworld.compuserve.com/homepages/RHendricks/vbdev.htm 16,-20975,00.html http://www.monmouth.com/~shay/link/vbcorner.htm http://www.pbs.mcp.com/ebooks/1562764853/ http://www.vb-web-directory.com/discus/ http://homepages.enterprise.net/gboyce/page/wanttobe.shtml http://www.vb-web-directory.com/ http://www.geocities.com/SiliconValley/Hills/4691/index.htm http://www.cgvb.com/ http://home.att.net/fbull/vb/vbfaqs.htm http://www.programmingtutorials.com/ http://www.syix.com/wpsjr1/index.html http://www.developer.com/directories/pages/dir.cobol.tls.wde.html http://www.desertware.com/vbuniverse/index.html http://www.programmerz.com/vb/code.htm http://www.codeguru.com/vb/ http://msdn.microsoft.com/vbasic/default.asp http://www.itlibrary.com/reference/dir.programminglanguages.html http://www.insteptech.com/ http://www.fys.ruu.nl/~beljaars/Vmain.html http://www.mindspring.com/andyd/vb/ http://vbwire.com/ http://user.orbit.net.mt/angdeg/ http://www.lycos.com/wguide/wire/wire_582651_45507_3_1.html http://www.tiac.net/users/efields/vbhp.htm http://www.ettnet.se/daniel/vb/links.html http://www.vbwm.com/ http://members.xoom.com/vb_b_dwnld/ http://www.vbtt.com/ http://karl.hxcorp.com/ http://home.computer.net/mheller/links.html http://visualbasic.miningco.com/ http://www.dcs.napier.ac.uk/hci/VB50/home.html http://www.cyber-matrix.com/vb.htm http://www.vbonline.com/vbonline/vbsites.htm http://www.concentric.net/rhinoh/vb.htm http://www.vbtechniques.com/ http://www.geocities.com/SiliconValley/Pines/3566/ http://www.itlibrary.com/reference/library/0672307286/vel01.htm http://web2.airmail.net/gbeene/visual.html http://www.cetus-links.org/oo_visual_basic.html http://www.geocities.com/SiliconValley/Lakes/3959/ History+Of+Visual+Basic+Links: http://www.fys.ruu.nl/~bergmann/history.html http://www.mackido.com/History/History_VB.html http://www.vbi.org/Library/Novice/what_is.html http://www.geocities.com/SiliconValley/Park/8710/whatisvb.html Visual Basic Online Magazines and Groups: http://www.vbonline.com/vb-mag/ http://www.vbpj.com/ http://catalog.vbonline.com/default.htm http://sourcedata.com/magazines/ http://www.geocities.com/SiliconValley/Horizon/7082/webring_info.html http://www.gdmag.com/ http://www.ddj.com/ http://www.zdjournals.com/ivb/ Visual+Basic+Game+Programming+Links: http://www.geocities.com/SiliconValley/Park/3269/tutorial.html http://floodlight-findings.com/vbg/ring.html http://visualbasic.miningco.com/library/weekly/aa032599.htm?pid=2813&cob=home http://moonbase.wwc.edu/fortsa/Game/ http://www.geocities.com/SiliconValley/Park/3269/ http://www.acky.net/vb/ http://www.vb-web-directory.com/game/game.shtml http://www.geocities.com/SiliconValley/Haven/5613/ http://www.fortunecity.com/underworld/pacman/16/index.htm http://home.san.rr.com/vbgame/index.html http://members.home.net/theluckyleper/ http://www.geocities.com/SiliconValley/Way/4032/ http://www.cbes.net/lperfect/perfectsoftware/Main.html http://www.ur.co.nz/ http://members.theglobe.com/vbgaming/ http://members.xoom.com/DigiTorus/ http://members.xoom.com/VBGAD/index.html http://www.geocities.com/TimesSquare/3439/ http://mlplus.com/users/vbgh/index2.htm http://www.Geocities.com/SiliconValley/Bay/9520/index.html http://www.redrival.com/voodoovb/ http://www.geocities.com/SiliconValley/Station/6200/index.html http://www.geocities.com/SiliconValley/Heights/6429/ http://members.xoom.com/JimMcCue/vbprgmng.htm http://vb-web-directory.com/info/gamemags.shtml http://www.gameslice.com/ http://www.gamasutra.com/ http://www.gdmag.com/ http://www.dataclub.fi/aw/bpcgame.html Visual+Basic+Tools+Links: http://www.hallogram.com/visual-basic/ Visual+Basic+Books+Links: http://www1.fatbrain.com/shop/browse.cl?SubjectCode=PGLSVC&vm=c http://vbbooks.freeservers.com/ http://www.okcom.net/~zhuw/game.htm http://www.sweepsadvantage.com/books/game-programming.htm http://www.bargaincomputerbooks.com/bcb/default.asp http://www.door2net.com/half-price/index.html http://www.1bookstreet.com/default.asp?mscssid=KVNSLPJP9VS12GSF00JP4342SH5G4AND http://www.vbi.org/Bookstore/vb30.html http://www.kidwaresoftware.com/beginvb.htm http://www.desertware.com/vbuniverse/vbbooks.html http://dman.simplenet.com/tygame.html http://www.gameprogrammer.com/bookstore.html Indepentant Visual Basic Projects: http://www.vbopensource.com/index.htm Visual Basic Jobs: http://www.visualbasicjobs.com/ http://www.jfpresources.com/vbjobs.html http://www.premierjobs.com/visual_basic/ http://www.developers.net/ http://www.prgjobs.com/ http://webserv.jobworld.co.uk/jwuk_user/plsql/pkg_jw_homepage.homepage http://www.computerjobs.com/ http://jobsearch.monster.com/jobsearch.asp?q=visual+basic http://www.boeing.com/employment/ http://www.honeywell.com/employment/employment.stm http://www.volt-west.com/ http://www.tandem.com/ http://www.emachinesinc.com/ http://www.raytheon.com/ Visual+Basic+Chat+and+Messageboards: http://vb.duke.net/ Learn+Visual+Basic+on+CDROM+or+Video: http://www.cdlearning.com/ http://www.klscorp.com/ Visual Basic Contract Programmers: http://www.eisiweb.com/ Visual Basic Overview: Properties, Events, Methods http://www.thebestweb.com/vbarticles/VBPropertiesEventsMethods.htm Have A Diffucult Question That You Need Answered? Leave It On My Message Board For 90 days: http://www.InsideTheWeb.com/mbs.cgi/mb668156 Got A Question? My Chat Room To Meet Other People Who Like To Discuss Computer Topics: ~http://mercury.beseen.com/chat/rooms/p/7948 |
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