• DELPHI函数过程


    Unit   Function   Summary
     
    System   Abs   Gives the absolute value of a number (-ve sign is removed)
    System   Addr   Gives the address of a variable, function or procedure
    SysUtils   AnsiCompareStr   Compare two strings for equality
    SysUtils   AnsiCompareText   Compare two strings for equality, ignoring case
    StrUtils   AnsiContainsStr   Returns true if a string contains a substring
    StrUtils   AnsiEndsStr   Returns true if a string ends with a substring
    StrUtils   AnsiIndexStr   Compares a string with a list of strings - returns match index
    StrUtils   AnsiLeftStr   Extracts characters from the left of a string
    SysUtils   AnsiLowerCase   Change upper case characters in a string to lower case
    StrUtils   AnsiMatchStr   Returns true if a string exactly matches one of a list of strings
    StrUtils   AnsiMidStr   Returns a substring from the middle characters of a string
    SysUtils   AnsiPos   Find the position of one string in another
    StrUtils   AnsiReplaceStr   Replaces a part of one string with another
    StrUtils   AnsiReverseString   Reverses the sequence of letters in a string
    StrUtils   AnsiRightStr   Extracts characters from the right of a string
    StrUtils   AnsiStartsStr   Returns true if a string starts with a substring
    SysUtils   AnsiUpperCase   Change lower case characters in a string to upper case
    Math   ArcCos   The Arc Cosine of a number, returned in radians
    Math   ArcSin   The Arc Sine of a number, returned in radians
    System   ArcTan   The Arc Tangent of a number, returned in radians
    System   Assigned   Returns true if a reference is not nil
    System   BeginThread   Begins a separate thread of code execution
    Classes   Bounds   Create a TRect value from top left and size values
    StdConvs   CelsiusToFahrenheit   Convert a celsius temperature into fahrenheit
    SysUtils   ChangeFileExt   Change the extension part of a file name
    System   Chr   Convert an integer into a character
    SysUtils   CompareStr   Compare two strings to see which is greater than the other
    SysUtils   CompareText   Compare two strings for equality, ignoring case
    Math   CompareValue   Compare numeric values with a tolerance
    System   Concat   Concatenates one or more strings into one string
    ConvUtils   Convert   Convert one measurement value to another
    System   Copy   Create a copy of part of a string or an array
    System   Cos   The Cosine of a number
    SysUtils   CreateDir   Create a directory
    SysUtils   CurrToStr   Convert a currency value to a string
    SysUtils   CurrToStrF   Convert a currency value to a string with formatting
    SysUtils   Date   Gives the current date
    SysUtils   DateTimeToFileDate   Convert a TDateTime value to a File date/time format
    SysUtils   DateTimeToStr   Converts TDateTime date and time values to a string
    SysUtils   DateToStr   Converts a TDateTime date value to a string
    DateUtils   DayOfTheMonth   Gives day of month index for a TDateTime value (ISO 8601)
    DateUtils   DayOfTheWeek   Gives day of week index for a TDateTime value (ISO 8601)
    DateUtils   DayOfTheYear   Gives the day of the year for a TDateTime value (ISO 8601)
    SysUtils   DayOfWeek   Gives day of week index for a TDateTime value
    DateUtils   DaysBetween   Gives the whole number of days between 2 dates
    DateUtils   DaysInAMonth   Gives the number of days in a month
    DateUtils   DaysInAYear   Gives the number of days in a year
    DateUtils   DaySpan   Gives the fractional number of days between 2 dates
    Math   DegToRad   Convert a degrees value to radians
    SysUtils   DeleteFile   Delete a file specified by its file name
    SysUtils   DirectoryExists   Returns true if the given directory exists
    SysUtils   DiskFree   Gives the number of free bytes on a specified drive
    SysUtils   DiskSize   Gives the size in bytes of a specified drive
    StrUtils   DupeString   Creates a string containing copies of a substring
    SysUtils   EncodeDate   Build a TDateTime value from year, month and day values
    DateUtils   EncodeDateTime   Build a TDateTime value from day and time values
    SysUtils   EncodeTime   Build a TDateTime value from hour, min, sec and msec values
    DateUtils   EndOfADay   Generate a TDateTime value set to the very end of a day
    DateUtils   EndOfAMonth   Generate a TDateTime value set to the very end of a month
    System   Eof   Returns true if a file opened with Reset is at the end
    System   Eoln   Returns true if the current text file is pointing at a line end
    System   Exp   Gives the exponent of a number
    SysUtils   ExtractFileDir   Extracts the dir part of a full file name
    SysUtils   ExtractFileDrive   Extracts the drive part of a full file name
    SysUtils   ExtractFileExt   Extracts the extension part of a full file name
    SysUtils   ExtractFileName   Extracts the name part of a full file name
    SysUtils   ExtractFilePath   Extracts the path part of a full file name
    StdConvs   FahrenheitToCelsius   Convert a fahrenheit temperature into celsius
    SysUtils   FileAge   Get the last modified date/time of a file without opening it
    SysUtils   FileDateToDateTime   Converts a file date/time format to a TDateTime value
    SysUtils   FileExists   Returns true if the given file exists
    SysUtils   FileGetAttr   Gets the attributes of a file
    System   FilePos   Gives the file position in a binary or text file
    SysUtils   FileSearch   Search for a file in one or more directories
    SysUtils   FileSetAttr   Sets the attributes of a file
    SysUtils   FileSetDate   Set the last modified date and time of a file
    System   FileSize   Gives the size in records of an open file
    SysUtils   FindClose   Closes a successful FindFirst file search
    SysUtils   FindCmdLineSwitch   Determine whether a certain parameter switch was passed
    SysUtils   FindFirst   Finds all files matching a file mask and attributes
    SysUtils   FindNext   Find the next file after a successful FindFirst
    SysUtils   FloatToStr   Convert a floating point value to a string
    SysUtils   FloatToStrF   Convert a floating point value to a string with formatting
    SysUtils   ForceDirectories   Create a new path of directories
    SysUtils   Format   Rich formatting of numbers and text into a string
    SysUtils   FormatCurr   Rich formatting of a currency value into a string
    SysUtils   FormatDateTime   Rich formatting of a TDateTime variable into a string
    SysUtils   FormatFloat   Rich formatting of a floating point number into a string
    System   Frac   The fractional part of a floating point number
    SysUtils   GetCurrentDir   Get the current directory (drive plus directory)
    System   GetLastError   Gives the error code of the last failing Windows API call
    System   GetMem   Get a specified number of storage bytes
    System   Hi   Returns the hi-order byte of a (2 byte) Integer
    System   High   Returns the highest value of a type or variable
    DateUtils   IncDay   Increments a TDateTime variable by + or - number of days
    DateUtils   IncMillisecond   Increments a TDateTime variable by + or - number of milliseconds
    DateUtils   IncMinute   Increments a TDateTime variable by + or - number of minutes
    SysUtils   IncMonth   Increments a TDateTime variable by a number of months
    DateUtils   IncSecond   Increments a TDateTime variable by + or - number of seconds
    DateUtils   IncYear   Increments a TDateTime variable by a number of years
    Dialogs   InputBox   Display a dialog that asks for user text input, with default
    Dialogs   InputQuery   Display a dialog that asks for user text input
    System   Int   The integer part of a floating point number as a float
    SysUtils   IntToHex   Convert an Integer into a hexadecimal string
    SysUtils   IntToStr   Convert an integer into a string
    System   IOResult   Holds the return code of the last I/O operation
    Math   IsInfinite   Checks whether a floating point number is infinite
    SysUtils   IsLeapYear   Returns true if a given calendar year is a leap year
    System   IsMultiThread   Returns true if the code is running multiple threads
    Math   IsNaN   Checks to see if a floating point number holds a real number
    SysUtils   LastDelimiter   Find the last position of selected characters in a string
    System   Length   Return the number of elements in an array or string
    System   Ln   Gives the natural logarithm of a number
    System   Lo   Returns the low-order byte of a (2 byte) Integer
    Math   Log10   Gives the log to base 10 of a number
    System   Low   Returns the lowest value of a type or variable
    SysUtils   LowerCase   Change upper case characters in a string to lower case
    Math   Max   Gives the maximum of two integer values
    Math   Mean   Gives the average for a set of numbers
    Dialogs   MessageDlg   Displays a message, symbol, and selectable buttons
    Dialogs   MessageDlgPos   Displays a message plus buttons at a given screen position
    Math   Min   Gives the minimum of two integer values
    DateUtils   MonthOfTheYear   Gives the month of the year for a TDateTime value
    SysUtils   Now   Gives the current date and time
    System   Odd   Tests whether an integer has an odd value
    System   Ord   Provides the Ordinal value of an integer, character or enum
    System   ParamCount   Gives the number of parameters passed to the current program
    System   ParamStr   Returns one of the parameters used to run the current program
    System   Pi   The mathematical constant
    Classes   Point   Generates a TPoint value from X and Y values
    Classes   PointsEqual   Compares two TPoint values for equality
    System   Pos   Find the position of one string in another
    System   Pred   Decrement an ordinal variable
    Printers   Printer   Returns a reference to the global Printer object
    Dialogs   PromptForFileName   Shows a dialog allowing the user to select a file
    Types   PtInRect   Tests to see if a point lies within a rectangle
    Math   RadToDeg   Converts a radian value to degrees
    System   Random   Generate a random floating point or integer number
    Math   RandomRange   Generate a random integer number within a supplied range
    DateUtils   RecodeDate   Change only the date part of a TDateTime variable
    DateUtils   RecodeTime   Change only the time part of a TDateTime variable
    Classes   Rect   Create a TRect value from 2 points or 4 coordinates
    SysUtils   RemoveDir   Remove a directory
    SysUtils   RenameFile   Rename a file or directory
    System   Round   Rounds a floating point number to an integer
    System   SeekEof   Skip to the end of the current line or file
    System   SeekEoln   Skip to the end of the current line or file
    FileCtrl   SelectDirectory   Display a dialog to allow user selection of a directory
    SysUtils   SetCurrentDir   Change the current directory
    System   Sin   The Sine of a number
    System   SizeOf   Gives the storage byte size of a type or variable
    System   Slice   Creates a slice of an array as an Open Array parameter
    System   Sqr   Gives the square of a number
    System   Sqrt   Gives the square root of a number
    System   StringOfChar   Creates a string with one character repeated many times
    SysUtils   StringReplace   Replace one or more substrings found within a string
    System   StringToWideChar   Converts a normal string into a WideChar 0 terminated buffer
    SysUtils   StrScan   Searches for a specific character in a constant string
    SysUtils   StrToCurr   Convert a number string into a currency value
    SysUtils   StrToDate   Converts a date string into a TDateTime value
    SysUtils   StrToDateTime   Converts a date+time string into a TDateTime value
    SysUtils   StrToFloat   Convert a number string into a floating point value
    SysUtils   StrToInt   Convert an integer string into an Integer value
    SysUtils   StrToInt64   Convert an integer string into an Int64 value
    SysUtils   StrToInt64Def   Convert a string into an Int64 value with default
    SysUtils   StrToIntDef   Convert a string into an Integer value with default
    SysUtils   StrToTime   Converts a time string into a TDateTime value
    StrUtils   StuffString   Replaces a part of one string with another
    System   Succ   Increment an ordinal variable
    Math   Sum   Return the sum of an array of floating point values
    Math   Tan   The Tangent of a number
    SysUtils   Time   Gives the current time
    SysUtils   TimeToStr   Converts a TDateTime time value to a string
    DateUtils   Tomorrow   Gives the date tomorrow
    SysUtils   Trim   Removes leading and trailing blanks from a string
    SysUtils   TrimLeft   Removes leading blanks from a string
    SysUtils   TrimRight   Removes trailing blanks from a string
    System   Trunc   The integer part of a floating point number
    System   UpCase   Convert a Char value to upper case
    SysUtils   UpperCase   Change lower case characters in a string to upper case
    Variants   VarType   Gives the current type of a Variant variable
    System   WideCharToString   Copies a null terminated WideChar string to a normal string
    SysUtils   WrapText   Add line feeds into a string to simulate word wrap
    DateUtils   Yesterday   Gives the date yesterday
      SysUtils   Abort   Aborts the current processing with a silent exception
    System   Append   Open a text file to allow appending of text to the end
    SysUtils   AppendStr   Concatenate one string onto the end of another
    System   Assign   Assigns a file handle to a binary or text file
    System   AssignFile   Assigns a file handle to a binary or text file
    Printers   AssignPrn   Treats the printer as a text file - an easy way of printing text
    SysUtils   Beep   Make a beep sound
    System   BlockRead   Reads a block of data records from an untyped binary file
    System   BlockWrite   Writes a block of data records to an untyped binary file
    System   Break   Forces a jump out of a single loop
    System   ChDir   Change the working drive plus path for a specified drive
    System   Close   Closes an open file
    System   CloseFile   Closes an open file
    System   Continue   Forces a jump to the next iteration of a loop
    SysUtils   DateTimeToString   Rich formatting of a TDateTime variable into a string
    System   Dec   Decrement an ordinal variable
    SysUtils   DecodeDate   Extracts the year, month, day values from a TDateTime var.
    DateUtils   DecodeDateTime   Breaks a TDateTime variable into its date/time parts
    SysUtils   DecodeTime   Break a TDateTime value into individual time values
    System   Delete   Delete a section of characters from a string
    System   Dispose   Dispose of storage used by a pointer type variable
    System   EndThread   Terminates a thread with an exit code
    System   Erase   Erase a file
    System   Exclude   Exclude a value in a set variable
    System   Exit   Exit abruptly from a function or procedure
    System   FillChar   Fills out a section of storage with a fill character or byte value
    System   Flush   Flushes buffered text file data to the file
    SysUtils   FreeAndNil   Free memory for an object and set it to nil
    System   FreeMem   Free memory storage used by a variable
    System   GetDir   Get the default directory (drive plus path) for a specified drive
    SysUtils   GetLocaleFormatSettings   Gets locale values for thread-safe functions
    System   Halt   Terminates the program with an optional dialog
    System   Inc   Increment an ordinal variable
    System   Include   Include a value in a set variable
    System   Insert   Insert a string into another string
    System   MkDir   Make a directory
    System   Move   Copy bytes of data from a source to a destination
    System   New   Create a new pointer type variable
    FileCtrl   ProcessPath   Split a drive/path/filename string into its constituent parts
    System   Randomize   Reposition the Random number generator next value
    System   Read   Read data from a binary or text file
    System   ReadLn   Read a complete line of data from a text file
    System   ReallocMem   Reallocate an existing block of storage
    System   Rename   Rename a file
    SysUtils   ReplaceDate   Change only the date part of a TDateTime variable
    SysUtils   ReplaceTime   Change only the time part of a TDateTime variable
    System   Reset   Open a text file for reading, or binary file for read/write
    System   ReWrite   Open a text or binary file for write access
    System   RmDir   Remove a directory
    System   RunError   Terminates the program with an error dialog
    System   Seek   Move the pointer in a binary file to a new record position
    System   SetLength   Changes the size of a string, or the size(s) of an array
    System   SetString   Copies characters from a buffer into a string
    Dialogs   ShowMessage   Display a string in a simple dialog with an OK button
    Dialogs   ShowMessageFmt   Display formatted data in a simple dialog with an OK button
    Dialogs   ShowMessagePos   Display a string in a simple dialog at a given screen position
    System   Str   Converts an integer or floating point number to a string
    System   Truncate   Truncates a file size - removes all data after the current position
    System   Val   Converts number strings to integer and floating point values
    System   Write   Write data to a binary or text file
    System   WriteLn   Write a complete line of data to a text file
    System   AnsiChar   A character type guaranteed to be 8 bits in size
    System   AnsiString   A data type that holds a string of AnsiChars
    System   Boolean   Allows just True and False values
    System   Byte   An integer type supporting values 0 to 255
    System   Cardinal   The basic unsigned integer type
    System   Char   Variable type holding a single character
    System   Comp   A 64 bit signed integer
    System   Currency   A floating point type with 4 decimals used for financial values
    System   Double   A floating point type supporting about 15 digits of precision
    System   Extended   The floating point type with the highest capacity and precision
    System   Int64   A 64 bit sized integer - the largest in Delphi
    System   Integer   The basic Integer type
    System   LongInt   An Integer whose size is guaranteed to be 32 bits
    System   LongWord   A 32 bit unsigned integer
    System   PAnsiChar   A pointer to an AnsiChar value
    System   PAnsiString   Pointer to an AnsiString value
    System   PChar   A pointer to an Char value
    System   PCurrency   Pointer to a Currency value
    System   PDateTime   Pointer to a TDateTime value
    System   PExtended   Pointer to a Extended floating point value
    System   PInt64   Pointer to an Int64 value
    System   Pointer   Defines a general use Pointer to any memory based data
    System   PShortString   A pointer to an ShortString value
    System   PString   Pointer to a String value
    System   PVariant   Pointer to a Variant value
    System   PWideChar   Pointer to a WideChar
    System   PWideString   Pointer to a WideString value
    System   Real   A floating point type supporting about 15 digits of precision
    System   Real48   The floating point type with the highest capacity and precision
    System   ShortInt   An integer type supporting values -128 to 127
    System   ShortString   Defines a string of up to 255 characters
    System   Single   The smallest capacity and precision floating point type
    System   SmallInt   An Integer type supporting values from -32768 to 32767
    System   String   A data type that holds a string of characters
    Classes   TBits   An object that can hold an infinite number of Boolean values
    ConvUtils   TConvType   Defines a measurement type as used by Convert
    System   TDateTime   Data type holding a date and time value
    System   Text   Defines a file as a text file
    System   TextFile   Declares a file type for storing lines of text
    SysUtils   TFloatFormat   Formats for use in floating point number display functions
    SysUtils   TFormatSettings   A record for holding locale values for thread-safe functions
    Classes   TList   General purpose container of a list of objects
    System   TObject   The base class type that is ancestor to all other classes
    Dialogs   TOpenDialog   Displays a file selection dialog
    Types   TPoint   Holds X and Y integer values
    Dialogs   TPrintDialog   Class that creates a printer selection and control dialog
    Types   TRect   Holds rectangle coordinate values
    SysUtils   TReplaceFlags   Defines options for the StringReplace routine
    Dialogs   TSaveDialog   Displays a dialog for selecting a save file name
    SysUtils   TSearchRec   Record used to hold data for FindFirst and FindNext
    Classes   TStringList   Holds a variable length list of strings
    SysUtils   TSysCharSet   Characters used by supplied string parsing functions
    System   TThreadFunc   Defines the function to be called by BeginThread
    System   Variant   A variable type that can hold changing data types
    System   WideChar   Variable type holding a single International character
    System   WideString   A data type that holds a string of WideChars
    System   Word   An integer type supporting values 0 to 65535
    System   AbstractErrorProc   Defines a proc called when an abstract method is called
    System   CmdLine   Holds the execution text used to start the current program
    SysUtils   CurrencyDecimals   Defines decimal digit count in the Format function
    SysUtils   CurrencyFormat   Defines currency string placement in curr display functions
    SysUtils   CurrencyString   The currency string used in currency display functions
    SysUtils   DateSeparator   The character used to separate display date fields
    SysUtils   DecimalSeparator   The character used to display the decimal point
    System   ErrorAddr   Sets the error address when an application terminates
    System   ExitCode   Sets the return code when an application terminates
    System   FileMode   Defines how Reset opens a binary file
    System   Input   Defines the standard input text file
    SysUtils   LongDateFormat   Long version of the date to string format
    SysUtils   LongDayNames   An array of days of the week names, starting 1 = Sunday
    SysUtils   LongMonthNames   An array of days of the month names, starting 1 = January
    SysUtils   LongTimeFormat   Long version of the time to string format
    SysUtils   NegCurrFormat   Defines negative amount formatting in currency displays
    Variants   Null   A variable that has no value
    System   Output   Defines the standard output text file
    System   RandSeed   Reposition the Random number generator next value
    System   Result   A variable used to hold the return value from a function
    System   Self   Hidden parameter to a method - refers to the containing object
    SysUtils   ShortDateFormat   Compact version of the date to string format
    SysUtils   ShortDayNames   An array of days of the week names, starting 1 = Sunday
    SysUtils   ShortMonthNames   An array of days of the month names, starting 1 = Jan
    SysUtils   ShortTimeFormat   Short version of the time to string format
    ConvUtils   TConvFamily   Defines a family of measurement types as used by Convert
    SysUtils   ThousandSeparator   The character used to display the thousands separator
    SysUtils   TimeAMString   Determines AM value in DateTimeToString procedure
    SysUtils   TimePMString   Determines PM value in DateTimeToString procedure
    SysUtils   TimeSeparator   The character used to separate display time fields
    SysUtils   TwoDigitYearCenturyWindow   Sets the century threshold for 2 digit year string conversions
    Math   Infinity   Floating point value of infinite size
    System   MaxInt   The maximum value an Integer can have
    System   MaxLongInt   The maximum value an LongInt can have
    SysUtils   MinsPerDay   Gives the number of minutes in a day
    SysUtils   MonthDays   Gives the number of days in a month
    Math   NaN   Not a real number
    System   Nil   A pointer value that is defined as undetermined
    SysUtils   SecsPerDay   Gives the number of seconds in a day
    Variants   VarTypeMask   Mask for the meta-type part of a Variant variable
       $A   Determines whether data is aligned or packed
        $Align   Determines whether data is aligned or packed
        $AppType   Determines the application type : GUI or Console
        $B   Whether to short cut and and or operations
        $BoolEval   Whether to short cut and and or operations
        $D   Determines whether application debug information is built
        $DebugInfo   Determines whether application debug information is built
        $Define   Defines a compiler directive symbol - as used by IfDef
        $DefinitionInfo   Determines whether application symbol information is built
        $Else   Starts the alternate section of an IfDef or IfNDef
        $EndIf   Terminates conditional code compilation
        $ExtendedSyntax   Controls some Pascal extension handling
        $H   Treat string types as AnsiString or ShortString
        $Hints   Determines whether Delphi shows compilation hints
        $I   Allows code in an include file to be incorporated into a Unit
        $IfDef   Executes code if a conditional symbol has been defined
        $IfNDef   Executes code if a conditional symbol has not been defined
        $IfOpt   Tests for the state of a Compiler directive
        $Include   Allows code in an include file to be incorporated into a Unit
        $IOChecks   When on, an IO operation error throws an exception
        $L   Determines what application debug information is built
        $LocalSymbols   Determines what application debug information is built
        $LongStrings   Treat string types as AnsiString or ShortString
        $MinEnumSize   Sets the minimum storage used to hold enumerated types
        $O   Determines whether Delphi optimises code when compiling
        $Optimization   Determines whether Delphi optimises code when compiling
        $OverFlowChecks   Determines whether Delphi checks integer and enum bounds
        $Q   Determines whether Delphi checks integer and enum bounds
        $R   Determines whether Delphi checks array bounds
        $RangeChecks   Determines whether Delphi checks array bounds
        $ReferenceInfo   Determines whether symbol reference information is built
        $Resource   Defines a resource file to be included in the application linking
        $UnDef   Undefines a compiler directive symbol - as used by IfDef
        $Warnings   Determines whether Delphi shows compilation warnings
        $X   Controls some Pascal extension handling
        $Y   Determines whether application symbol information is built
        $Z   Sets the minimum storage used to hold enumerated types
        Abstract   Defines a class method only implemented in subclasses
        Default   Defines default processing for a property
        Dynamic   Allows a class method to be overriden in derived classes
    System   Export   Makes a function or procedure in a DLL externally available
        Index   Principally defines indexed class data properties
        Out   Identifies a routine parameter for output only
        Overload   Allows 2 or more routines to have the same name
        Override   Defines a method that replaces a virtual parent class method
        Private   Starts the section of private data and methods in a class
        Protected   Starts a section of class private data accesible to sub-classes
        Public   Starts an externally accessible section of a class
        Published   Starts a published externally accessible section of a class
        Virtual   Allows a class method to be overriden in derived classes
        And   Boolean and or bitwise and of two arguments
        Array   A data type holding indexable collections of data
        As   Used for casting object references
        Begin   Keyword that starts a statement block
        Case   A mechanism for acting upon different values of an Ordinal
        Class   Starts the declaration of a type of object class
        Const   Starts the definition of fixed data values
        Constructor   Defines the method used to create an object from a class
        Destructor   Defines the method used to destroy an object
        Div   Performs integer division, discarding the remainder
        Do   Defines the start of some controlled action
        DownTo   Prefixes an decremental for loop target value
        Else   Starts false section of if, case and try statements
        End   Keyword that terminates statement blocks
        Except   Starts the error trapping clause of a Try statement
        File   Defines a typed or untyped file
        Finally   Starts the unconditional code section of a Try statement
        For   Starts a loop that executes a finite number of times
    System   Function   Defines a subroutine that returns a value
        Goto   Forces a jump to a label, regardless of nesting
        If   Starts a conditional expression to determine what to do next
        Implementation   Starts the implementation (code) section of a Unit
        In   Used to test if a value is a member of a set
        Inherited   Used to call the parent class constructor or destructor method
    System   Interface   Used for Unit external definitions, and as a Class skeleton
        Is   Tests whether an object is a certain class or ascendant
        Mod   Performs integer division, returning the remainder
        Not   Boolean Not or bitwise not of one arguments
    System   Object   Allows a subroutine data type to refer to an object method
        Of   Linking keyword used in many places
        On   Defines exception handling in a Try Except clause
        Or   Boolean or or bitwise or of two arguments
        Packed   Compacts complex data types into minimal storage
    System   Procedure   Defines a subroutine that does not return a value
    System   Program   Defines the start of an application
    System   Property   Defines controlled access to class fields
        Raise   Raise an exception
        Record   A structured data type - holding fields of data
        Repeat   Repeat statements until a ternmination condition is met
        Set   Defines a set of up to 255 distinct values
        Shl   Shift an integer value left by a number of bits
        Shr   Shift an integer value right by a number of bits
        Then   Part of an if statement - starts the true clause
        ThreadVar   Defines variables that are given separate instances per thread
        To   Prefixes an incremental for loop target value
        Try   Starts code that has error trapping
        Type   Defines a new category of variable or process
        Unit   Defines the start of a unit file - a Delphi module
        Until   Ends a Repeat control loop
        Uses   Declares a list of Units to be imported
        Var   Starts the definition of a section of data variables
        While   Repeat statements whilst a continuation condition is met
        With   A means of simplifying references to structured variables
        Xor   Boolean Xor or bitwise Xor of two arguments
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  • 原文地址:https://www.cnblogs.com/zerovirs/p/2221360.html
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