frmVBArray
Thunking with Huge VB Arrays
Form2
txAnswer
txOffset
cmdSumArray
Sum the Array
txVBUT
txVBLinear
txVBHandle
cmdMakeArray
Rebuild VB Array (ReDim)
txValElemt
txNumElemts
Label11
And VB can still use it.
Label10
$VB Allocates Memory, Win32s uses it!
Label8
Put your 32 bit Function Here!
MS Sans Serif
Label9
(Do First)
Label7
Answer
Label6
+Offset between W3.1 and Win32 linear Spaces
Label5
Win32s Linear Address
Label4
Win 3.1 Linear Address
Label3
VBArray Memory Handle
Label2
Value of Each Element
Label1
Number of Array Elements
Line1
	Form_Loadf
Label1_Click
Text1_Change
NumberElements
Text1C
TextS
bigArray
Command1_Click^
MakeArray_Click
Text2_Change2
NumElemts_Change
NumElements
ValElement-
	NumElemtsv
TxBoxValElemts_ChangeT
txBoxValElemts
txBoxNumElemtsV
Label2_Click
TxBoxNumElemts_Change;
Form_Click(
MB_OK
MB_OKCANCELh
MB_YESNOCANCEL
MB_YESNO
MB_ICONSTOP
MB_ICONQUESTION
MB_ICONEXCLAMATION
MB_ICONINFORMATIONA
MB_DEFBUTTON2
IDYES
DgDef
Response
Title
have_
machiney
elsIf
ColumnsB
h0ffff
Leftover
ArrSize
	ArrayRows
	ArraySize8
ArrColumns
ArrRows
	lpVBArrayw
VBPTRtoLong
Numbersp
VBSel
	lhvbarray
GlobalHandle
hVBArray
	VBLowWord
	GlobalFix
GetSelectorBase
UTSelectorOffSetToLinear
Win31Linear
WIN32LinearJ
OffSet
GlobalUnFix
Text2
text3>
VBLinearAddress|
linearaddress
Text5
	UTAddressM
VBUTAddress<
Text6
Text7L
dwgetAddressForInteger
dwgetAddressForLong)
sVBArray
dwDWORDto2Integers
jlpVBArray
jVBSelT
jlhvbarray
	jhVBArray
	sVBArray2>
OutLoop
	ArratRows
IfOffSet.
text34
text4`
Label5_Click
Win16Start
SumArray
CndSumArray_Clicku
Win16Finish
SumArray32
Sum2K
trxt[
Win32Start
Win32Finish
Label10_Click
ThenVBLinearAddress
	LockArray
firstElement
fills
memory
blocks
txVBHandle.
txVBLinearz
txVBUT
txOffset
txNumElemts_Change
txNumElemts
txValElemts_Change
txValElemts
Text5_Change
cmdSumArray_Click
txValElemt_Change:
txValElemt
cmdMakeArray_Click
txAnswer
txBoxValElemti
arraycreated
MessageBox
OutofMem
Leavesub
frmVBArray
timer01
array
unload:
cmdMakeArray_Click
this sub redimensions and fills a VB array
then gets array linear addresses
The array you requested is more than 15 MB, forget it
You must have a lot of memory!
This array is between 1 and 15 MB
Make Big VB Array?
turns off error handling
fills array with value
if overs 64000 bytes,r
fills memory in 16,000 byte blocks
This is the key code:fixing linear virtual address of VB array
must get pointer to first elemento
get selector from pointer 
get handle from selector
handle is in the low wordl
fix VB array in virtual space 
Win 3.1 function to get Windows3.1 linear address.
UT function to get WIn32s linear address from pointeri
must unfix VB Array
must convert long to equivalent of dword (unsigned long int) and correct for offset of first element from selector start
VB arrays do not start at the selectorse
large (huge) arrays are offset an additional
two bytes 
same conversion for >2GB virtual addresses
long to unsigned long int (equivalent) conversion for Win32s address
compare Win32s address with Win3.1
Out of memory, reduce size of array
Array too big
undefined error
cmdSumArray_Click
summming the array in a win32 function from VB
Redim Array first
get pointer to first element
get selector from pointers
calling 32 bit function through UT
Form_Load
txNumElemts_Change
enter a number >0
Array size
txValElemt_Change