Do not pack $LeftTable and $RightTable. They should be 12345, not "\x12\x34....". myTable is a void * and is a HANDLE/pointer sized integer, myTable * is a void **. I saw you create $packedOutputTable from ,$outputTable with CreateTable but never checked $outputTable for null/0/false. $pointerToCount looks fine. I don't think the 2 doubles cause problems at this point.

Good, so I only have to work out wich letter to use in pack to pass $LeftTable and $RightTable. I'll have a go tomorrow and let you know (btw thanks again, I'm learning a lot). In reference with $packedOutputTable: 

my $outputTable = $CreateTable->Call();
my $packedOutputTable = pack('J',$outputTable);

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I understand that's the right way to pass a void**.

In reply to Re^10: WIN32::API and void* by sgv_81
in thread WIN32::API and void* by sgv_81

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