IDC资讯中心
本分类表仅包括部分VisualBasic对初学者有用的命令，限于篇幅，如果您想了解命令的详细用法，请参看VB帮助或其它有关VB书籍。有一点需要记住的是：不要把VB命令同VB控件的属性混淆！
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顺序文件随机文件二进制其它I/O
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OPENWRITE#OPENGETOPENGETDATARUN
CLOSEPRINT#CLOSEPUTCLOSEPUTREADCHAIN
RESETPRINT#USINGRESETFIELDRESETLOCKRESTOREINKEY$
EOFINPUT#EOFLSETEOFUNLOCKENVIRONLPRINT
LOCLINEINPUT$#LOCRSETLOCFREEFILEENVIRON$TAB
LOFFREEFILELOFMK…LOFINPUT$SYSTEM
LOCKSEEKCV…SEEKLINEINPUT$SLEEP
UNLOCKSEEK#LOCKSEEK#VIEWPRINTEND
FILEATTRFREEFILEUNLOCKFILEATTRDATE$STOP
FILEATTRTIME$LPOS
TRONSTICK
RND#range:int((up-lo 1)*RND lo)TROFFSTRIG
IOCTLREM
IOCTL$
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字符串DOS显示声明
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UCASE$CHR$SHELLLOCATECOLORMainProcedures
LCASE$ASCFILESPRINTSOUND——————-
LEFT$VALNAMECLSCLEARDECLARE
LTRIM$SPCKILLBEEPPLAYCOMMON
RIGHT$SPACE$MKDIRVIEWPRINTPOSOPTIONBASE
RTRIM$STR$CHDIRWIDTHCSRLINCONST
MID$INSTRRMDIRDEFFN
LENSTRING$FILEATTRSTATICSTATIC
LSETSWAPDIR$SHAREDSHARED
RSETFREDIMDIM
ENVIRONREDIMREDIM
ENVIRON$DEFINTDEFINT
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QUICKBASIC专用命令内存/数组DEFCURDEFCUR
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LOCALALIAS$INCLUDEPEEKBLOADVARPTRDEFLNGDEFLNG
SADDBYVALInt86POKEBSAVEVARPTR$DEFSNGDEFSNG
SETMEMCDECLInt86xCLEARUBOUNDVARSEGDEFDBLDEFDBL
SIGNALCOMMAND$INTERRUPTERASELBOUNDFRETYPE…TYPE…
EVENTUEVENTINTERRUPTXDEFSEG
VARPTRSSEG
VARSEG
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循环和条件
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FORiTOjSTEPkWHILEcondIF__THEN__ELSESELECTCASE
EXITFOR-CASE__,__
NEXTWEND-IF__THENCASEIScond
ELSEIF__THEN__CASE__TO__
DOWHILE|UNTILcondELSE__CASEELSE
EXITDOENDIFENDSELECT
LOOPWHILE|UNTILcond
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图形过程文件类型事件处理
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PSETLINESUB…INPUTONKEY()GOSUB
PRESETCIRCLEFUNCTION…OUTPUT"COM()"
POINTDRAWCALLAPPEND"PEN"
BSAVEPAINTGOTORANDOM"PLAY()"
BLOADPALETTEGOSUBBINARY"STRIG()"
PCOPYVIEWRESUME"TIMER()"
PMAPWINDOWRETURN"__GOSUB_,_,_
SCREENCOLORCALLABSOLUTE"__GOTO_,_,_
SOUND"=NumericExp
COMON|OFF|STOP
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数字逻辑数据类型端口错误处理
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HEX$RNDMODIMPASSINGLEFIXINPERDEVERR
OCT$SGNABSAND"DOUBLECINTOUTERDEV$ERL
SWAPSINSQROR"LONGINTWAITONERRORERROR
EXPCOSLOGXOR"INTEGERCSNG
TANLETATNNOT"STRINGCDBLONERRORGOTO
RANDOMIZEEQVCLNGONLOCALERRORGOTO
ONERRORRESUMENEXT
ONLOCALERRORRESUMENEXT
RESUME
EVENTON
EVENTOFF
RETURN->
