Re: How to get an OLE array of objects?

kingskippus@xxxxxxxxx wrote:
I'm really scratching my head over this. I have an OLE object with a
method that takes an [out] parameter that is an array of other OLE
objects. What I'd like to do is to get that array of other OLE objects
and iterate through them, printing out a property from each one. I
don't know that much about OLE objects, can someone please help? I've
been Googling for a couple of hours and feel like I'm close, but I
can't find anything for that last little bit.

Here's what I need using semi-pseudocode that I know won't work right:

use Win32::OLE;
my $tree = Win32::OLE->new( 'Tree.Component' );
my @nodes = array();

This is not Perl. Are you thinking of PHP, perhaps? To declare an
array, you simply say:
my @nodes;


# GetNodes is a method of TreeComponent that is defined like this:
# int GetNodes([out] TreeNode[])
# where TreeNode is another OLE object type

$tree->GetNodes(\@nodes); # This doesn't work...

What do you mean by "doesn't work"? Did that give you a syntax error?
Run-time error? Or are you just assuming that it "didn't work" based
on later code?

for $node (@nodes) {
print $node{Name}."\n"; # Name is a property of TreeNode objects

Are you using strict and warnings? If not, turn them on. Here, you're
trying to access a hash named %node, rather than a hashref named $node.
Assuming @nodes does contain an array of hashes (or objects), this
should be:
print $node->{Name} . "\n";

Paul Lalli

.

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