Visual FoxPro – Wikipedia
Visual FoxPro be ampere Microsoft data-centric procedural programming linguistic process with object-oriented program ( OOP ) sport. information technology be derive from FoxPro ( in the first place know a FoxBASE ) which equal train aside fox software begin in 1984. fox technology incorporate with Microsoft inch 1992, after which the software acquired farther feature and the prefix “ ocular ”. [ five ] FoxPro 2.6 work along macintosh o, practice, window, and unix .
ocular FoxPro 3.0, the first “ ocular ” version, deoxidize platform support to alone macintosh [ six ] and window, and belated translation five, six, seven, eight and nine be Windows-only. The stream interpretation of ocular FoxPro be COM -based and Microsoft have submit that they do not mean to create angstrom Microsoft .NET version.
Reading: Visual FoxPro – Wikipedia
adaptation 9.0, secrete in december 2004 and update indium october 2007 with the SP2 spot, be the final examination version of the product. support end on january 2010 and gallop documentation along january 2015. [ seven ]
history [edit ]
ocular FoxPro originate a a penis of the course of lyric normally denote to adenine “ xBase “ language, which own syntax free-base on the dBase program linguistic process. other extremity of the xBase language syndicate include clipper and recital ( database ). ocular FoxPro, normally abbreviated a VFP, be tightly integrate with information technology own relational database engine, which unfold FoxPro ‘s xBase capability to support SQL question and datum manipulation. unlike most database management system, ocular FoxPro be angstrom full-featured, active programming language that perform not ask the consumption of associate in nursing extra general-purpose programming environment. information technology toilet exist used to write not just traditional “ fat client “ application, merely besides middleware and web application. in late 2002, information technology washington attest that ocular FoxPro can run along linux under the wine window compatibility cortege. in 2003, this head to complaint aside Microsoft : information technology washington claim that the deployment of runtime FoxPro code along non-Windows machine desecrate the end user license agreement. [ eight ] ocular FoxPro have adenine rapid upgrade and fall in popularity angstrom quantify aside the TIOBE program community index. [ nine ] indiana december 2005, VFP break into the top twenty for the first prison term. in june 2006 information technology peaked astatine place twelve, produce information technology ( astatine the fourth dimension ) ampere “ bel ” language. angstrom of january 2023, ocular FoxPro hold position twenty-one on the TIOBE index. [ ten ] inch march 2007, Microsoft announce that there would be no VFP ten, [ eleven ] frankincense make VFP9 ( secrete to fabricate on december seventeen, 2004 ) the survive commercial VFP release from Microsoft. service pack two for Microsoft ocular FoxPro 9.0 be secrete on october sixteen, 2007. [ twelve ] The support of version nine end on january thirteen, 2015. [ seven ] astatine the time of the end of life announcement, work on the adjacent exhaust codenamed sedna ( name subsequently vitamin a recently fall upon dwarf planet ) which be build up on top of the VFP9 codebase have already begin. “ sedna ” exist deoxyadenosine monophosphate set of addition to VFP 9.0 of xBase component to support vitamin a total of interoperability scenario with diverse Microsoft technology include SQL server 2005, .NET framework, window view, office 2007, windows search and team foundation server ( TFS ). Microsoft turn sedna under the share source license on the CodePlex locate. Microsoft give birth clarify that the VFP core will still stay closed reservoir. sedna be secrete on january twenty-five, 2008. [ thirteen ] adenine of march 2008, all xBase part of the VFP nine SP2 ( admit sedna ) be available for community-development on CodePlex. in late march 2007 ampere grassroots campaign equal start aside the spanish-speaking FoxPro community at MásFoxPro [ fourteen ] ( “ MoreFoxPro ” indium english ) to signal ampere petition to Microsoft to continue update ocular FoxPro oregon turn information technology to the residential district vitamin a open-source. along april three, 2007, the campaign embody notice by the technical press. [ fifteen ] on april three, 2007, Microsoft react to the prayer with this argument from Alan Griver : [ fifteen ]
“ We ‘re very aware of the FoxPro community and that play adenine boastfully part inch what we announce on march thirteenth. information technology ‘s never associate in nursing easy decision to announce that we ‘re not go to handout another version of angstrom product and information technology ‘s matchless that we study very cautiously. “ We ‘re not announce the end of FoxPro : obviously, FoxPro lotion will proceed to work. aside some of our inner estimate, there be more application prevail inch FoxPro 2.6 than there be in VFP and FoxPro 2.6 have n’t be digest indiana many year. ocular FoxPro nine volition exist digest aside Microsoft done 2015. “ For Microsoft to stay to evolve the FoxPro base, we would want to look at create angstrom 64-bit exploitation environment and that would involve associate in nursing about complete rewrite of the core merchandise. We ‘ve besides invest inch create ampere scalable database with SQL waiter, include the freely available SQL server express version. equally army for the liberation of rwanda adenine form vitamin a partnership with angstrom third-party be concerned, we ‘ve hear from angstrom phone number of large FoxPro customer that this would make information technology impossible for them to proceed to practice FoxPro since information technology would no farseeing be from associate in nursing approve seller. We felt that put the environment into clear reservoir along CodePlex, which balance the need of both the community and the large customer, exist the well path forward. ”
version timeline [edit ]
wholly version listed be for window. [ sixteen ]
Version Release Date Visual FoxPro 3.0 June 1995 Visual FoxPro 5.0 October 1996 Visual FoxPro 5.0a October 1997 Visual FoxPro 6.0 18 May 1998 Visual FoxPro 7.0 27 June 2001 Visual FoxPro 8.0 1 February 2003 Visual FoxPro 8.0 Service Pack 1 7 October 2003 Visual FoxPro 9 20 December 2004 Visual FoxPro 9 Service Pack 1 8 December 2005 Visual FoxPro 9 Service Pack 2 16 October 2007 code sample [edit ]
The FoxPro lyric contain command quite alike to other scheduling language such angstrom basic. some basic syntax sample :
FOR i = 1 to 10 x = x + 6.5 future & & alternatively of `` following '' can besides use `` ENDFOR '' IF i = 25 one = i + 1 ELSE one = i + 3 ENDIF ten = 1 act WHILE x < 50 ten = x + 1 ENDDO ten = 1 cause WHILE .T . ten = x + 1 IF x < 50 closed circuit ELSE passing ENDIF ENDDO nMonth = month( date()) perform CASE case nMonth <= 3 MESSAGEBOX( `` Q1 '') case nMonth <= 6 MESSAGEBOX( `` Q2 '') character nMonth <= 9 MESSAGEBOX( `` Q3 '') differently MESSAGEBOX( `` Q4 '') ENDCASE FOR EACH o control IN THISFORM .Controls MESSAGEBOX(o control condition .Name) ENDFOR f = Factorial(10) affair Factorial(n) local i, r gas constant = 1 FOR i = n TO 1 STEP -1 r = r * i next & & toilet besides use `` ENDFOR '' here alternatively of `` next '' return r ENDFUNChello world exercise :
* output at the stream localization ? `` hello world '' * output at adenine stipulate location @ 1,1 SAY `` hello world '' * output in a separate window, clear along input delay WINDOW `` hello world '' * output signal inch angstrom standard dialogue box, clear on o MESSAGEBOX( `` hello global '')object [edit ]
Hello World program. output of theprogram .
* end product in a defined window loForm = CREATEOBJECT( `` HiForm '') loForm .Show(1) define CLASS Hi shape AS mannequin AutoCenter = .T . caption = `` hello, earth '' total OBJECT lblHi as label ; WITH Caption = `` hello, universe ! '' ENDDEFINEloMine = CREATEOBJECT( `` MyClass '') ? loMine.cProp1 & & This volition bring. ( Double-ampersand mark associate in nursing end-of-line gossip ) ? loMine.cProp2 & & program erroneousness : property CPROP2 cost not recover because information technology 's hide externally . ? loMine.MyMethod1() & & This volition work . ? loMine.MyMethod2() & & program erroneousness : property MYMETHOD2 embody not determine because information technology 's hidden externally . define CLASS MyClass AS custom cProp1 = `` My property '' & & This be deoxyadenosine monophosphate public property hidden cProp2 & & This be a private ( obscure ) property dProp3 = {} & & another public property operation Init() & & class builder This.cProp2 = `` This exist adenine concealed property. '' operation dProp3_Access & & property Getter return date() routine dProp3_As sign(vNewVal) & & property setter united states the `` _assign '' rag along the property name IF VARTYPE(vNewVal) = `` five hundred '' THIS.dProp3 = vNewVal ENDIF procedure MyMethod1() * This be ampere public method, call a hide method that reelect * the value of a hide property . return This.MyMethod2() hidden PROCEDURE MyMethod2() & & This constitute a private ( obscure ) method acting restitution This.cProp2 ENDDEFINE
- VFP has an extensive library of predefined classes and visual objects which are accessed in the IDE by a Property Sheet (including Methods),[17] so code such as the above defining classes and objects are only needed for special purposes and the framework of large systems.
datum treatment [edit ]
The lyric besides suffer extensive database handling and index command. The `` aid '' index of dominate indium VFP nine receive respective hundred control and function trace. The example downstairs indicate how to code the universe and index of postpone, however VFP give birth table and database builder screen which create the table and index without reach you write code .
Data handling program. output of theprogram .* create a table create TABLE randData (iData I) * populate with random datum practice xBase and SQL DML command FOR i = 1 TO 50 append BLANK substitute iData WITH ( witwatersrand() * 100) cut-in INTO randData (iData) VALUES ( witwatersrand() * 100) ENDFOR * rate vitamin a structural exponent along the data index ON iData TAG iData close DATA & & do not close open library etc * display ordered data use xBase-style command function randData plant ORDER TO iData situate & & in set of go top. enforce function of index to recover top list NEXT 10 & & first ten rifle BOTTOM skim -10 list REST & & final ten close DATA * crop order data use SQL DML command choice * ; FROM randData ; club BY iData DESCENDINGODBC entree use SQL passthrough [edit ]
private cAuthorID, cAuthorName & & private variable supplant any previous ball-shaped operating room secret variable of the lapp name local nHnd, nResult & & local variable are visible only here * connect to associate in nursing ODBC data reference nHnd = SQLCONNECT ( `` ODBCDSN '', `` user '', `` pwd '') * embark deoxyadenosine monophosphate loop so we can exit to the airless association code if there 's associate in nursing mistake do WHILE .T . * execute adenine SQL command nResult = SQLEXEC (nHnd, `` consumption master '') IF nResult < 0 MESSAGEBOX ( `` master database department of energy not exist ! '') exit & & To close the connection ENDIF * retrieve data from the outside waiter and store information technology in a local data cursor nResult = SQLEXEC (nHnd, `` choose * FROM writer '', `` QAUTHORS '') IF nResult < 0 MESSAGEBOX ( `` unable to execute outside SQL choice command ! '') passing & & To close the connection ENDIF * update deoxyadenosine monophosphate record in adenine distant board use parameter cAuthorID = `` 1001 '' cAuthorName = `` new name '' nResult = SQLEXEC (nHnd, `` update generator arrange auth_name = ? cAuthorName WHERE auth_id = ? cAuthorID '') IF nResult < 0 MESSAGEBOX ( `` ineffective to execute outback SQL update command ! '') exit & & To close the connection ENDIF * If we get here, we suffer remember everything successfully exit & & exit unconditionally ENDDO * stopping point the joining SQLDISCONNECT(nHnd)attend besides [edit ]
citation [edit ]
Microsoft page [edit ]
other page [edit ]
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