PSOMESTRUCT *AnyName = NULL;

Thx in advance.

I like these easy questions too..

i need some sleep before asking haha

But i need more help accesing some values in SOMESTRUCT:

AnyName[dwIndex]->Value

mov eax,[anyname+dwindex]
mov [value],eax



mov eax,index
mov esi,anyname
mov eax,[esi+eax*4]
mov [value],eax

etc etc...

in 32 bits, all registers can be used as address component.

forgive me if im wrong but i need to acces "value" in structure

PSOMESTRUCT *AnyName = NULL;

PSOMESTRUCT typedef ptr SOMESTRUCT

SOMESTRUCT STRUCT
..
..
..
SOMESTRUCT ENDS

yes, of course.

I still dont get it...

AnyName is a pointer to an array of pointers.

SOMESTRUCT STRUCT

value1 DWORD ?
value2 LPBYTE ?
....
value5 LPSTR ?

SOMESTRUCT ENDS

How i access to value5?

mov eax,index
mov esi,anyname
mov eax,[esi+eax].value5 <- i need something like this

index can be 1,2,3,4 and later i need to INC index and check again value5.

Excuse my poor english.

Something like this?

mov esi,AnyName
assume esi:PTR SOMESTRUCT

xor eax,eax
mov ax,Index

mov eax,[esi+eax].SOMESTRUCT.Value5

inc Index

I think i need to MUL the SOMESTRUCT size by index or something.

In general:

ok, seems more clear now...

can you explain me this?

mov eax,[esi+eax*4]

why *4?

eax*4 is a dword ptr

the processor can apply a scale to registers in addressing.
*1 *2 *3 *4 *5 *8 *9

[eax]
[eax*1+eax]
[eax*2]
[eax*2+eax]
[eax*4]
[eax*4+eax]
[eax*8]
[eax*8+eax]

to access multidimentional arrays, it is the best, use a set of registers to accelerate the addressing.

and to accelerate address calculation, you can use LEA reg,[reg+reg*s+offset]

thx to all who reply! i learned a lot