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bcx basic manual home



types of variables

$ .. string variable ex a$
% .. numeric example a%
! .. numeric example a!
# .. numeric pounds I think example a#

example dim x as dword. The variable is then &x (apparently anyway). GLOBAL can also be used

dword :Double word
LPWORD : long pointer word?
LDOUBLE : long double
integer :integer
DOUBLE :double
string :string
ULONG
STRARRAY :string array
handle :this is a windows handle
LPSTR :32 bit string POINTER variable
COORD :x,y coordinates
WIN32_FIND_DATA
SYSTEMTIME :System Time
OSVERSIONINFO :Operating version info

QWERTY :querty keyboard
example

GLOBAL h AS QWERTY
h.a = 3

HWND :Windows handle
MSG
WNDCLASSEX
RECT :rectangle (I would guess)

FARPROC : far procedure??
HMODULE

dim A$

declares A$ to be global usualy is declared at the top of a program

GLOBAL h AS QWERTY

this does pretty much the same thing as dim

Local X!

Declares X! To be loace to the function or subroutine

TYPE is used to create a custom data type. It works a lot like many versions of pascal.

TYPE Zzz
DIM x
DIM y
DIM z
DIM p AS RECT
END TYPE

You can now use the TYPE just like any other basic var..

LOCAL cb AS Zzz

You would then access the various members by using the type name and then a period followed by the name of the variable such as the simple example below

cb.x = 1

DIM SHARED i, j, a$, Stak$[41]

I am not realy sure of the purpose of the shared keyword it appears that you can use it like the global keyword and then use it also in the subroutines


DATA

This is traditionally at the end of the program in basic..

example

Dim i


While data$ [i] <> "EndOfData"
Print data$ [i]
Incr i
Wend


DATA "111","222","333","444"
DATA "555","666","777","888"
DATA "999","EndOfData"

set ... end set.. this looks a little like a combination of the DATA keyword and type

SET A[] AS DOUBLE
1,5,9,3,10,4 ' Small Set Of Sample Data
END SET

DIM DYNAMIC
DIM STATIC
DIM RAW

you can define your variables as static or dynamic

redim probily works simular to other basic languages i.e. No docs

redim preserve a$[20]
redim a$[20]