I was able to pass 1D arrays from VB 6.0 to LabView 8.0 with no problem. I checked the literature for help regarding 2D arrays and found
scant help unless it was for VB.NET, C or single dimensional arrays. Thanks.
I wrote a simple test VB program to pass 2D arrays shown below after which I get a memory crash:
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Private Declare Sub Test2D Lib _
"C:\Documents and Settings\Owner\My Documents\builds\Test2DArray\Test2DArray\Test2DArray.DLL" _
Alias "Test2darray" (ByRef varInArray As Variant, ByRef varOutArray As Variant)
Private Sub cmdStart_Click()
On Error GoTo handle_error
Dim intInArray(8, 😎 As Integer
Dim intOutArray(8, 😎 As Integer
Dim varInArray As Variant, varOutArray As Variant
Dim i As Long, j As Long, k As Integer
For i = 0 To 7
k = i * 8
For j = 0 To 7
intInArray(i, j) = k + j
Next j
Next i
varInArray = intInArray
varOutArray = intOutArray
Test2D varInArray, varOutArray
Exit Sub
handle_error:
MsgBox Err.Description, , ""
End Sub
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In the Labview DLL I have a definition of the exported function call as:
void Test2darray(TD1Hdl * InArray, TD1Hdl * OutArray)
(in the Labview DLL I take the input array, add 1 to each of the elements and then stuff it into the output)
