Trouble with "variables"

[ask]

;example of constants

; "1BYTE" each constant

$TASK_SOMETHING = 0x01

$PARAM1_SOMETHING = 0x01

$PARAM2_SOMETHING = 0x01

Func makeMsg1($task,$param1,$param2)

;0x 00 (task) (param1) (param2)

return $task*(0x100*0x100) + $param1*0x100 + $param2

EndFunc

Func makeMsg2($task,$param1,$param2)

;0x 00 (task) (param1) (param2)

return $task*0x100^2 + $param1*0x100 + $param2

EndFunc

$MSG1 = 2147483647;2^31-1

$MSG2 = $MSG1 + 1

MsgBox(0,"size of return from makeMsg1",BinaryLen(makeMsg1($TASK_SOMETHING,$PARAM1_SOMETHING,$PARAM2_SOMETHING)))

MsgBox(0,"size of return from makeMsg2",BinaryLen(makeMsg2($TASK_SOMETHING,$PARAM1_SOMETHING,$PARAM2_SOMETHING)))

MsgBox(0,"size of $MSG1",BinaryLen($MSG1))

MsgBox(0,"size of $MSG2",BinaryLen($MSG2))

here we have a simple example of something that is very confused, after some days working with bytes in autoit i got big troubles in some "implicit casts"

i need to know the exact size of data that my functions return, without it i cant parse bytes in another end...

the question is, there is a way to specify the size of variables or tell the compiler "hey don't touch that ok?" ?

thank you for anything im just wondering... the autoit is a great language anyway, i did a lot of things in the last weeks just joking

uhh, i keep with my little/bad English, sorry if you don't understand

[PsaltyDS]

Read the help file under Variables. All integers are 32-bit signed, or FLOATS if too big for that. If you must work in other word sizes, it will have to be with the Binary functions.

AutoIt is an interpreted scripting language, like Perl. Not a programming language like C++. The interpreter (which is a binary written in C++) takes internal variables from your script and auto-magically morphs them into whatever form is required by the Windows API being used at the moment. At least that's my understanding of it, seen as through (dirty) glass, darkly...

[ask]

Thanks, i just asked because some of my functions that i made to generate messages to send through network were changing their size, and when it arrive in "server" the size was expected to be x, no 2*x, so if the message was expected to has 4 bytes, nothing is read or when read some mistake occur when the message has 8bytes, but sure i could check the size before returning something, but i didn't.

I fixed it, but i had to discovery what change the size of variables.

However, how you said i know too, that is an interpreted scripting language, a good one that we can do really fast some common tasks(because of automation), so i think that i am here just for ask or express gratitude for that language that has helped me a lot.

I'm new with AutoIt as you can see, keep with your patience with "noobs" like me, good support we have here, just few hours after i make a question i got an answer, thank you.

=p

Edited December 30, 2007 by ask

[PsaltyDS]

I left something out, in that there are DLL structs available in AutoIt. Bytes can be worked with directly using DllStruct* functions, but if you want to assemble them into a network stream of some kind, that would probably be the Binary* functions. Check it all out in the help file.

And welcome to AutoIt!

[ask]

Once again thank you, this is exactly what i need.