Pointer in a Structure

[Killswitch]

What I would like to do is have a pointer in a structure so I can read a file in a pack then later write that data. This is what i've tried:

Code: Select all

Structure a
*a
b.l
endstructure

dim defile.a(10)

defile\a=nextpackfile()
defile\b=packfilesize()

createfile(0,"bob.txt")
   writedata(defile\a,defile\b)
closefile(0)

Thats not my code exactly, but it is what I've been trying to do. When I try to write the data to a file PB says that the pointer is null. Is there a way around this, or is it just not posible?

[freedimension]

I've been using this

Code: Select all

Structure ByteArray
  b.b[0]
EndStructure
Structure Data
  *data.ByteArray
EndStructure


*x.Data = AllocateMemory(100)
*x\data\b[0] = 0

[Killswitch]

Thank ye very much!

[freedimension]

This way you can adress every single Byte directly using the static-Array [x] Syntax. Very usefull.

[GedB]

killswhich,

In you original solution you dim defile as an array, then access it as a variable.

defile\a when it should be defile(1)\a.

[Killswitch]

Thanks, I have been doing that with my code but the real stuff is upstairs on my internet-free 98 box, you won't believe the amount of problems that mistake has caused me though!

[GedB]

~I see one problem with your code: the fact is thats not a array~