Delphi Language Guide Delphi for Microsoft Win32 Delphi for the Microsoft. Net framework
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Other standard routines
Procedure or function Description Addr Returns a pointer to a specified object. AllocMem Allocates a memory block and initializes each byte to zero. ArcTan Calculates the arctangent of the given number. Assert Raises an exception if the passed expression does not evaluate to true. Assigned Tests for a nil (unassigned) pointer or procedural variable. Beep Generates a standard beep. Break Causes control to exit a for, while, or repeat statement. ByteToCharIndex Returns the position of the character containing a specified byte in a string. Chr Returns the character for a specified integer value. Close Closes a file. CompareMem Performs a binary comparison of two memory images. CompareStr Compares strings case sensitively. CompareText Compares strings by ordinal value and is not case sensitive. Continue Returns control to the next iteration of for, while, or repeat statements. Copy Returns a substring of a string or a segment of a dynamic array. Cos Calculates the cosine of an angle. CurrToStr Converts a currency variable to a string. Date Returns the current date. DateTimeToStr Converts a variable of type TDateTime to a string. DateToStr Converts a variable of type TDateTime to a string. Dec Decrements an ordinal variable or a typed pointer variable. Dispose Releases dynamically allocated variable memory. ExceptAddr Returns the address at which the current exception was raised. Exit Exits from the current procedure. Exp Calculates the exponential of X. FillChar Fills contiguous bytes with a specified value. 175 Finalize Uninitializes a dynamically allocated variable. FloatToStr Converts a floating point value to a string. FloatToStrF Converts a floating point value to a string, using specified format. FmtLoadStr Returns formatted output using a resourced format string. FmtStr Assembles a formatted string from a series of arrays. Format Assembles a string from a format string and a series of arrays. FormatDateTime Formats a date-and-time value. FormatFloat Formats a floating point value. FreeMem Releases allocated memory. GetMem Allocates dynamic memory and a pointer to the address of the block. Halt Initiates abnormal termination of a program. Hi Returns the high-order byte of an expression as an unsigned value. High Returns the highest value in the range of a type, array, or string. Inc Increments an ordinal variable or a typed pointer variable. Initialize Initializes a dynamically allocated variable. Insert Inserts a substring at a specified point in a string. Int Returns the integer part of a real number. IntToStr Converts an integer to a string. Length Returns the length of a string or array. Lo Returns the low-order byte of an expression as an unsigned value. Low Returns the lowest value in the range of a type, array, or string. LowerCase Converts an ASCII string to lowercase. MaxIntValue Returns the largest signed value in an integer array. MaxValue Returns the largest signed value in an array. MinIntValue Returns the smallest signed value in an integer array. MinValue Returns smallest signed value in an array. New Creates a dynamic allocated variable memory and references it with a specified pointer. Now Returns the current date and time. Ord Returns the ordinal integer value of an ordinal-type expression. Pos Returns the index of the first single-byte character of a specified substring in a string. Pred Returns the predecessor of an ordinal value. Ptr Converts a value to a pointer. Random Generates random numbers within a specified range. ReallocMem Reallocates a dynamically allocatable memory. Round Returns the value of a real rounded to the nearest whole number. SetLength Sets the dynamic length of a string variable or array. SetString Sets the contents and length of the given string. ShowException Displays an exception message with its address. 176 ShowMessage Displays a message box with an unformatted string and an OK button. ShowMessageFmt Displays a message box with a formatted string and an OK button. Sin Returns the sine of an angle in radians. SizeOf Returns the number of bytes occupied by a variable or type. Sqr Returns the square of a number. Sqrt Returns the square root of a number. Str Converts an integer or real number into a string. StrToCurr Converts a string to a currency value. StrToDate Converts a string to a date format (TDateTime). StrToDateTime Converts a string to a TDateTime. StrToFloat Converts a string to a floating-point value. StrToInt Converts a string to an integer. StrToTime Converts a string to a time format (TDateTime). StrUpper Returns an ASCII string in upper case. Succ Returns the successor of an ordinal value. Sum Returns the sum of the elements from an array. Time Returns the current time. TimeToStr Converts a variable of type TDateTime to a string. Trunc Truncates a real number to an integer. UniqueString Ensures that a string has only one reference. (The string may be copied to produce a single reference.) UpCase Converts a character to uppercase. UpperCase Returns a string in uppercase. VarArrayCreate Creates a variant array. VarArrayDimCount Returns number of dimensions of a variant array. VarArrayHighBound Returns high bound for a dimension in a variant array. VarArrayLock Locks a variant array and returns a pointer to the data. VarArrayLowBound Returns the low bound of a dimension in a variant array. VarArrayOf Creates and fills a one-dimensional variant array. VarArrayRedim Resizes a variant array. VarArrayRef Returns a reference to the passed variant array. VarArrayUnlock Unlocks a variant array. VarAsType Converts a variant to specified type. VarCast Converts a variant to a specified type, storing the result in a variable. VarClear Clears a variant. VarCopy Copies a variant. VarToStr Converts variant to string. VarType Returns type code of specified variant. 177 |