Multi - dimensional array pointers

[Tyrone W. Lee]

Thanks guys..



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Explorations v3.0 RPG Development System
http://www.explore-rpg.com

[Colin Schmidt]

Quote from PowerBASIC/DLL for windows help
-User's Guide
--Data Types
---Arrays -> Very bottom of the page.

"---
Internal representations of arrays
PowerBASIC stores arrays in column-major order: Array(0,0) is first (lowest) in memory, then Array(1,0), then Array(2,0), and so on through all the rows of the array. After the rows are taken care of, the next column is stored.
---"


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Colin Schmidt & James Duffy, Praxis Enterprises, Canada

[Semen Matusovski]

Tyron --
Hope, this is an answer on your question

#Compile Exe
#Register None
DefLng a-z
$Include "win32Api.Inc"

Function PbMain()

   Dim a&(1 : 3, 1 : 5)
   Dim aa As Long Ptr
   For i = 1 To 3: For j = 1 To 5
      a&(i, j) = 100 * i + j
   Next: Next
   aa = VarPtr(a&(1, 1))
   For i = 1 To 15
      w$ = w$ + Str$(@aa)
      aa = aa + 4
   Next
   MsgBox w$

End Function

[Tyrone W. Lee]

A single dimension array pointer is stored in a series..

offset what is stored at address
i%(0)=1 0 1
i%(1)=2 2 2
i$(2)=3 4 3

How is a mult-dimension array stored?

i%(0,0)
i%(0,1)
i%(0,2)
i%(1,0)

etc...


Tyrone

-------------
Explorations v3.0 RPG Development System
http://www.explore-rpg.com