Mega Code Archive
Functions
1) A better Pos function
2) Abs - gives the absolute value of a number [-ve sign is removed] system unit
3) Adding some FORTRAN Functions
4) Addr - gives the address of a variable, function or procedure system unit
5) AdvanceDateByOneMonth function + DaysInMonth
6) Again a Unique Key Generating Function.. )
7) Ansicomparestr - compare two strings for equality sysutils unit
8) Ansicomparetext - compare two strings for equality, ignoring case sysutils unit
9) Ansicontainsstr - returns true if a string contains a substring strutils unit
10) Ansiendsstr - returns true if a string ends with a substring strutils unit
11) Ansiindexstr - compares a string with a list of strings - returns match strutils unit
12) Ansileftstr - extracts characters from the left of a string strutils unit
13) Ansilowercase - change upper case characters in a string to lower case sysutils unit
14) Ansimatchstr - returns true if a string exactly matches one of a list of strings strutils unit
15) Ansimidstr - returns a substring from the middle characters of a string strutils unit
16) Ansipos - find the position of one string in another sysutils unit
17) Ansireplacestr - replaces a part of one string with another strutils unit
18) Ansireversestring - reverses the sequence of letters in a string strutils unit
19) Ansirightstr - extracts characters from the right of a string strutils unit
20) Ansistartsstr - returns true if a string starts with a substring strutils unit
21) Ansiuppercase - change lower case characters in a string to upper case sysutils unit
22) Arccos - the arc cosine of a number, returned in radians math unit
23) Arcsin - the arc sine of a number, returned in radians math unit
24) Arctan - the arc tangent of a number, returned in radians
25) Arrow and Function Keys
26) Assigned - returns true if a reference is not nil system unit
27) Automate your Email with the SendMailWithAttachments function
28) Beginthread - begins a separate thread of code execution system unit
29) Bit manipulating functions
30) Bounds - create a trect value from top left and size values classes unit
31) Celsiustofahrenheit - convert a celsius temperature into fahrenheit stdconvs unit
32) Changefileext - change the extension part of a file name sysutils unit
33) Chr - convert an integer into a character system unit
34) Comparestr - compare two strings to see which is greater than the other sysutils unit
35) Comparetext - compare two strings for equality, ignoring case sysutils
36) Concat - concatenates one or more strings into one string system unit
37) Convert - convert one measurement value to another convutils unit
38) Convert a Drive Letter (C) to a Drive Number (3) as Used by Delphis DiskFree function
39) Convert method pointers into function pointers
40) Copy - create a copy of part of a string or an array system unit
41) Cos - the cosine of a number system unit
42) Createdir - create a directory sysutils unit
43) Currtostr - convert a currency value to a string sysutils unit
44) Currtostrf - convert a currency value to a string with formatting sysutils unit
45) Date - gives the current date sysutils unit
46) Datetimetofiledate - convert a tdatetime value to a file date-time format sysutils unit
47) Datetimetostr - converts tdatetime date and time values to a string sysutils unit
48) Datetostr - converts a tdatetime date value to a string sysutils unit
49) Dayofthemonth - gives day of month index for a tdatetime value [iso 8601] dateutils unit
50) Dayoftheweek - gives day of week index for a tdatetime value [iso 8601] dateutils unit
51) Dayoftheyear - gives the day of the year for a tdatetime value [iso 8601] dateutils unit
52) Dayofweek - gives day of week index for a tdatetime value sysutils unit
53) Daysbetween - gives the whole number of days between 2 dates dateutils unit
54) Daysinamonth - gives the number of days in a month dateutils unit
55) Daysinayear - gives the number of days in a year dateutils unit
56) Dayspan - gives the fractional number of days between 2 dates dateutils unit
57) Degtorad - convert a degrees value to radians math unit
58) Deletefile - delete a file specified by its file name sysutils unit
59) Delphi Assembler Function Conventions
60) Directoryexists - returns true if the given directory exists sysutils unit
61) Diskfree - gives the number of free bytes on a specified drive sysutils unit
62) Disksize - gives the size in bytes of a specified drive sysutils unit
63) Does Delphi have an equivalent to the Visual Basic SendKeys function
64) Dupestring - creates a string containing copies of a substring strutils unit
65) Encodedate - build a tdatetime value from year, month and day values sysutils unit
66) Encodedatetime - build a tdatetime value from day and time values dateutils unit
67) Encodetime - build a tdatetime value from hour, min, sec and msec values sysutils unit
68) Endofaday - generate a tdatetime value set to the very end of a day dateutils unit
69) Endofamonth - generate a tdatetime value set to the very end of a month dateutils unit
70) Eof - returns true if a file opened with reset is at the end system unit
71) Eoln - returns true if the current text file is pointing at a line end system unit
72) Exp - gives the exponent of a number system unit
73) Extending the MessageBox function
74) Extractfiledir - extracts the dir part of a full file name sysutils unit
75) Extractfiledrive - extracts the drive part of a full file name sysutils unit
76) Extractfileext - extracts the extension part of a full file name sysutils unit
77) Extractfilename - extracts the name part of a full file name sysutils unit
78) Extractfilepath - extracts the path part of a full file name sysutils unit
79) Fahrenheittocelsius - convert a fahrenheit temperature into celsius stdconvs unit
80) Fileage - get the last modified date-time of a file without opening it sysutils unit
81) Filedatetodatetime - converts a file date-time format to a tdatetime value sysutils unit
82) Fileexists - returns true if the given file exists sysutils unit
83) Filegetattr - gets the attributes of a file sysutils unit
84) Filepos - gives the file position in a binary or text file system unit
85) Filesearch - search for a file in one or more directories sysutils unit
86) Filesetattr - sets the attributes of a file sysutils unit
87) Filesetdate - set the last modified date and time of a file sysutils unit
88) Filesize - gives the size in records of an open file system unit
89) Findclose - closes a successful findfirst file search sysutils unit
90) Findcmdlineswitch - determine whether a certain parameter switch was passed sysutils unit
91) Findfirst - finds all files matching a file mask and attributes sysutils unit
92) Findnext - find the next file after a successful findfirst
93) Floattostr - convert a floating point value to a string sysutils unit
94) Floattostrf - convert a floating point value to a string with formatting sysutils unit
95) Forcedirectories - create a new path of directories sysutils unit
96) Format - rich formatting of numbers and text into a string sysutils unit
97) Formatcurr - rich formatting of a currency value into a string sysutils unit
98) Formatdatetime - rich formatting of a tdatetime variable into a string sysutils unit
99) Formatfloat - rich formatting of a floating point number into a string sysutils unit
100) Frac - the fractional part of a floating point number system unit
101) Functional analogue of the biological brain
102) Functions of client server handling in multiplayer games PART II
103) Getcurrentdir - get the current directory [drive plus directory] sysutils unit
104) Getlasterror - gives the error code of the last failing windows api call system unit
105) Getmem - get a specified number of storage bytes system unit
106) GetToken function
107) GetToken function II Modified from Sebastian Volland work
108) Good Thursday and Easter DAte function
109) Hi - returns the hi-order byte of a [2 byte] integer system unit
110) High - returns the highest value of a type or variable system unit
111) High Res Timer (API Function)
112) Hook a function (in your own application)
113) add the Select All (CTRL+A) functionality to TMemoTDBMemo
114) combine the co related functions into one single function
115) Convert method pointers into function pointers
116) get execution time of a function or procedure
117) hook a function (in your own application)
118) implement the Pascal Delay function
119) make a procedurefunction with variable parameter count
120) plot a function
121) search recursive with the Pos function
122) Use a Function or a Procedure as a Parameter in another Function in Delphi
123) use a hash function
124) use some expanded Pos functions
125) use some TStream utility functions
126) use the AdjustTokenPrivileges function to enable a privilege
127) use the AdjustTokenPrivileges function to enable a privilege (NT)
128) use the AnimateWindow function
129) use the autorun function (CD ROM)
130) use the linux expand function
131) use the spell check functionality from word
132) write a callback function
133) Implement the Pascal Delay function
134) Incday - increments a tdatetime variable by + or - number of days dateutils unit
135) Incmillisecond - increments a tdatetime variable by + or - number of milliseconds dateutils unit
136) Incminute - increments a tdatetime variable by + or - number of minutes dateutils unit
137) Incmonth - increments a tdatetime variable by a number of months sysutils unit
138) Increase time function
139) Incsecond - increments a tdatetime variable by + or - number of seconds dateutils unit
140) Incyear - increments a tdatetime variable by a number of years dateutils unit
141) Inputbox - display a dialog that asks for user text input, with default dialogs unit
142) Inputquery - display a dialog that asks for user text input dialogs unit
143) Int - the integer part of a floating point number as a float system unit
144) Inttohex - convert an integer into a hexadecimal string sysutils unit
145) Inttostr - convert an integer into a string sysutils unit
146) Ioresult - holds the return code of the last i-o operation system unit
147) IsFloat function
148) Isinfinite - checks whether a floating point number is infinite math unit
149) Isleapyear - returns true if a given calendar year is a leap year sysutils unit
150) Ismultithread - returns true if the code is running multiple threads system unit
151) Isnan - checks to see if a floating point number holds a real number math unit
152) Lastdelimiter - find the last position of selected characters in a string sysutils unit
153) Length - return the number of elements in an array or string system unit
154) Like function
155) Ln - gives the natural logarithm of a number system unit
156) Lo - returns the low-order byte of a [2 byte] integer system unit
157) LoCase function
158) Log10 - gives the log to base 10 of a number math unit
159) Low - returns the lowest value of a type or variable system unit
160) Lowercase - change upper case characters in a string to lower case sysutils unit
161) Make a procedurefunction with variable parameter count
162) Max - gives the maximum of two integer values math unit
163) Mean - gives the average for a set of numbers math unit
164) Media Player & Autorepeat Function
165) Messagedlg - displays a message, symbol, and selectable buttons dialogs unit
166) Messagedlgpos - displays a message plus buttons at a given screen position dialogs unit
167) Min - gives the minimum of two integer values math unit
168) Monthoftheyear - gives the month of the year for a tdatetime value dateutils unit
169) Moving objects with snapgrid functionality
170) Need to Return a TStringList (any object) from a Delphi Function
171) Now - gives the current date and time sysutils unit
172) Odd - tests whether an integer has an odd value system unit
173) Ord - provides the ordinal value of an integer, character or enum system unit
174) Paramcount - gives the number of parameters passed to the current program system unit
175) Paramstr - returns one of the parameters used to run the current program system unit
176) Pascal based Delay function
177) Passing functionsprocedure to other functionsprocedures
178) PHP Alike implode & explode functions for Delphi
179) Pi - the mathematical constant system unit
180) Plot a function
181) Point - generates a tpoint value from x and y values classes unit
182) Pointsequal - compares two tpoint values for equality classes unit
183) Porting usefull functions from VB to Delphi
184) Pos - find the position of one string in another system unit
185) Pred - decrement an ordinal variable system unit
186) Printer - returns a reference to the global printer object printers unit
187) Promptforfilename - shows a dialog allowing the user to select a file dialogs unit
188) Ptinrect - tests to see if a point lies within a rectangle types unit
189) Radtodeg - converts a radian value to degrees math unit
190) Random - generate a random floating point or integer number system unit
191) Randomrange - generate a random integer number within a supplied range math unit
192) Recodedate - change only the date part of a tdatetime variable dateutils unit
193) Recodetime - change only the time part of a tdatetime variable dateutils unit
194) Rect - create a trect value from 2 points or 4 coordinates classes unit
195) Remote Execute Function (Unix REXEC)
196) Removedir - remove a directory sysutils unit
197) Renamefile - rename a file or directory sysutils unit
198) Returning Objects from Functions my thoughts
199) ROT47 a simple Substitution cipher function V2
200) Round - rounds a floating point number to an integer system unit
201) Rounding Time, RoundToQuarter function
202) Search recursive with the Pos function
203) Seekeof - skip to the end of the current line or file system unit
204) Seekeoln - skip to the end of the current line or file system unit
205) Selectdirectory - display a dialog to allow user selection of a directory filectrl unit
206) Setcurrentdir - change the current directory sysutils unit
207) Shutdown, Reboot, Logoff, Monitor Off and Suspend mode functions
208) Simple functions for work with words
209) Simple parsing procedure and function
210) Sin - the sine of a number system unit
211) Sizeof - gives the storage byte size of a type or variable system unit
212) Slice - creates a slice of an array as an open array parameter system unit
213) Split function (like in VB)
214) Sqr - gives the square of a number system unit
215) Sqrt - gives the square root of a number system unit
216) Str a function more useful than a procedure
217) String functions
218) Stringofchar - creates a string with one character repeated many times system unit
219) Stringreplace - replace one or more substrings found within a string sysutils unit
220) Stringtowidechar - converts a normal string into a widechar 0 terminated buffer system unit
221) Strtocurr - convert a number string into a currency value sysutils unit
222) Strtodate - converts a date string into a tdatetime value sysutils unit
223) Strtodatetime - converts a date+time string into a tdatetime value sysutils unit
224) Strtofloat - convert a number string into a floating point value sysutils unit
225) Strtoint - convert an integer string into an integer value sysutils unit
226) Strtoint64 - convert an integer string into an int64 value sysutils unit
227) Strtoint64def - convert a string into an int64 value with default sysutils unit
228) Strtointdef - convert a string into an integer value with default sysutils unit
229) Strtotime - converts a time string into a tdatetime value sysutils unit
230) Stuffstring - replaces a part of one string with another strutils unit
231) Succ - increment an ordinal variable system unit
232) Sum - return the sum of an array of floating point values math unit
233) Tan - the tangent of a number math unit
234) The function DiskInDrive
235) The function Keypressed
236) The function MatchString
237) The GetFolder function
238) The Loaded function
239) The SearchAndReplace functions
240) Time - gives the current time sysutils unit
241) Timetostr - converts a tdatetime time value to a string sysutils unit
242) Tomorrow - gives the date tomorrow dateutils unit
243) Trunc - the integer part of a floating point number system unit
244) Understanding Delphis NIL value and the Assigned RTL Function
245) Undo function with TMemo
246) Undocumented MessageBoxTimeOut function
247) Upcase - convert a char value to upper case system unit
248) Uppercase - change lower case characters in a string to upper case sysutils unit
249) Use ProcessMessages function
250) Use some expanded Pos functions
251) Use some TStream utility functions
252) Use the AdjustTokenPrivileges function to enable a privilege
253) Use the AnimateWindow function
254) Use the autorun function (CD ROM)
255) Use the linux expand function
256) Use the spell check functionality from word
257) Using objects method as callback function
258) Using the LzExpand functions in your applications
259) Vartype - gives the current type of a variant variable variants unit
260) Widechartostring - copies a null terminated widechar string to a normal string system unit
261) Wraptext - add line feeds into a string to simulate word wrap sysutils unit
262) Yesterday - gives the date yesterday dateutils unit