Constants

There are many ways to enter constants in CalcIt.

Normal numeric. The value is entered as a number like 1000, 123.34 etc. Point character is used to separate the decimal part from the integer part.

Engineering notation. Values can be entered like 100.5K, 2m, etc. The symbols for the engineering notation follow:

Symbol	Description	Value
f	fempto	E-15
p	pico	E-12
n	nano	E-09
u	micro	E-06
m	mili	E-03
K	Kilo	E+03
MEG	Mega	E+06
G	Giga	E+09
T	Terra	E+12

NOTE: These symbols are case sensitive. E.g. 100k is not 100K and is not accepted syntactically.

Exponential. Values can be entered like 100E3, 23E-2 etc.

Percentage. E.g. 20% is equal with 0.2

Numbers can be entered in hexadecimal or binary format. Numbers in this format must not exceed the range of 32 bit unsigned integers. To enter a hexadecimal constant, the number must prefixed with the symbol $. E.g. $AB12, $12AE etc. Binary constants are prefixed with the symbol #. E.g. #10011, #11101.

Using ! we can handle date data as numeric. E.g. !12/12/1999. Internally a date is converted to a number and we can do normal arithmetic operation with it. !12/12/1999-!11/12/1999 returns 1. The format of the constant is selected in general options and can be dd/mm/yyyy or mm/dd/yyyy.

Alphanumeric. Alphanumeric data (containing spaces and any kind of symbol) are expressed as text enclosed in single or double quotes. e.g. 'This is an alphanumeric (text) value' or "This is an alphanumeric (text) value".

Predefined Symbolic Constants

Constant	Value	Comment
bsLOW, bsHIGH, bsBOTH		They are used in Binary Search Operations
e	2.71828	base of Napierian logarithms
auDEG, auRAD, auGRAD		for use in AnglesUnit parameter
TRUE	1
FALSE	0
PI	3.14159265358979
CRLF	chr(13) & chr(10)	Carriage return + Line feed characters
TAB	chr(9)	TAB character
MATCH	chr(1)&chr(2)&chr(1)	It is used in the replace string parameter of REReplace command
QUOT	chr(39)	To use single quote character (') as normal character in strings
AppInstance		Application Instance handle. It is needed in some Windows API functions
ParentWindow		In cases a Windows API function needs a parent Window Handle

The constants below are used by Form or Control properties. See Using Form variables for more information.

Constant	For property
alBOTTOM, alCLIENT, alLEFT, alNONE, alRIGHT, alTOP	prALIGN
bsDIALOG, bsNONE, bsSINGLE, bsSIZEABLE	prBORDER
bvLOWERED, bvNONE, bvRAISED, bvSPACE	prBEVELINNER, prBEVELOUTER
ssBOTH, ssHORIZONTAL, ssNONE, ssVERTICAL	prSCROLLBARS
taCENTER, taLEFTJUSTIFY, taRIGHTJUSTIFY	prALIGNMENT
lpABOVE, lpBELOW, lpLEFT, lpRIGHT	prLABELPOSITION
clAqua, clBlack, clBlue, clDEFAULT, clFuchsia, clGray, clGreen, clLime, clMaroon, clNavy, clOlive, clPurple, clRed, clSilver, clTeal, clWhite, clYellow	prCOLOR, prFONTCOLOR
crBAR, crLINE, crPIE	prCHARTTYPE
mrRightBottom, mrLeftTop, mrBoth	prMARKS
orHorizontal, orVertical	prORIENTATION

Constant

For property

alBOTTOM, alCLIENT, alLEFT, alNONE, alRIGHT, alTOP

prALIGN

bsDIALOG, bsNONE, bsSINGLE, bsSIZEABLE

prBORDER

bvLOWERED, bvNONE, bvRAISED, bvSPACE

prBEVELINNER, prBEVELOUTER

ssBOTH, ssHORIZONTAL, ssNONE, ssVERTICAL

prSCROLLBARS

taCENTER, taLEFTJUSTIFY, taRIGHTJUSTIFY

prALIGNMENT

lpABOVE, lpBELOW, lpLEFT, lpRIGHT

prLABELPOSITION

clAqua, clBlack, clBlue, clDEFAULT, clFuchsia, clGray, clGreen, clLime, clMaroon, clNavy, clOlive, clPurple, clRed, clSilver, clTeal, clWhite, clYellow

prCOLOR, prFONTCOLOR

crBAR, crLINE, crPIE

prCHARTTYPE

mrRightBottom, mrLeftTop, mrBoth

prMARKS

orHorizontal, orVertical

prORIENTATION

The constants below represent Event types as they passed in the Action parameter of the local EventProc function. See Using Form variables for more information.

NOTE: Additional user defined symbolic constants can be created in Constants list and locally in a code using the command Const. Additionally in Classes it is possible to declare public constants accessed from any other piece of CalcIt code through a specific syntax.