how to declare pointer and use them?

[chrisc]

in PB we can declare pointer as

Code: [Select]

GLOBAL Sgp1 AS DWORD PTR

' and later use the pointer
 Sgp1 = CODEPTR(somelabel)

LOCAL Amm AS LONG
 Amm = @Sgp1[Amm]



how to do it in O2 ?

[Aurel]

I manot sure for array
but simple way is :

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'pointer
string a = "Oxygen"
@p = a
print p  ' show Oxygen

[Charles Pegge]

This could be confusing since o2 uses the @ operator as codeptr or 'address of'

Code: [Select]

GLOBAL Sgp1 AS DWORD PTR

' and later use the pointer
 Sgp1 = CODEPTR(somelabel)

LOCAL Amm AS LONG
 Amm = @Sgp1[Amm]


Code: [Select]

sys Sgp1
Sgp1 =@somelabel
dim Amm AS LONG
amm=1
Amm = *(Sgp1+Amm)
print hex Amm 'result: 302
end

somelabel:
db 01 02 03 00 00


[chrisc]

Thanxx to both of you and i gonna test them out on a  program