Passing a pointer to a .NET DLL

paulorfmmb has asked for the wisdom of the Perl Monks concerning the following question:

Need your help Monks,

I'm trying to pass a array to a .NET DLL. I created a COM object with my DLL using 392275. But I when I try to pass an array to my function I get this response:

Win32::OLE(0.1712) error 0x8002000e: Number of parameters invalid in METHOD/PROPERTYGET "Test"

Here is my Perl code:

use Win32::OLE;
$hl = new Win32::OLE('TestDot.myClass') or die $!;
my @ptrObject = (5, 10, 10);
my $ret = $hl->Test(@prtObject);
print(Win32::OLE->LastError()."\n");
[download]

Here my .NET function:

namespace TestDot
{
    public unsafe class myClass
    {
        public int Test(int *ptr)
        {
            return ptr[1];
        }
    }
}
[download]

Comment on Passing a pointer to a .NET DLL Select or Download Code

Replies are listed 'Best First'.
Re: Passing a pointer to a .NET DLL by syphilis (Archbishop) on May 10, 2018 at 14:34 UTC
Here is my Perl code Your code references 2 different arrays - @ptrObject and @prtObjetc. Cheers, Rob	[reply]
Re^2: Passing a pointer to a .NET DLL by Lotus1 (Vicar) on May 10, 2018 at 15:18 UTC
If the OP had added `use warnings; use strict;` [download] then Perl would have pointed this out. Good catch. Suggested reading for the OP, Use strict and warnings and 'use strict' is not Perl.	[reply] [d/l]
Re^2: Passing a pointer to a .NET DLL by paulorfmmb (Acolyte) on May 10, 2018 at 16:04 UTC
That is just a typo in here.	[reply]
Re^3: Passing a pointer to a .NET DLL by AnomalousMonk (Archbishop) on May 10, 2018 at 17:37 UTC
... just a typo ... That's why use of an Short, Self-Contained, Correct Example can be so important when asking a question: Here's the exact code I'm running; Here's the exact input data; Here's the output I get; Here's the output I want; Why don't I get what I want? See also the `Test::More` approach to presenting code and input/output. Give a man a fish: `<%-{-{-{-<`	[reply] [d/l] [select]
Re^4: Passing a pointer to a .NET DLL by stevieb (Canon) on May 10, 2018 at 20:36 UTC
Re: Passing a pointer to a .NET DLL by stevieb (Canon) on May 10, 2018 at 14:21 UTC
Looks to me as though the C# method expects one parameter but you're sending in three. That said, I am not familiar with Win32::OLE, so I'm unsure if that module sends a pointer to the array to the method (doesn't appear that way though).	[reply]
Re^2: Passing a pointer to a .NET DLL by Anonymous Monk on May 10, 2018 at 16:29 UTC
In other words, what happens if you pass `\@prtObject` rather than `@prtObject`?	[reply] [d/l] [select]
Re^3: Passing a pointer to a .NET DLL by paulorfmmb (Acolyte) on May 10, 2018 at 16:35 UTC
I get this response: Win32::OLE(0.1712) error: 0x80070057: "Incorrect parameter" in METHOD/PROPERTYGET "Test"	[reply]
Re^4: Passing a pointer to a .NET DLL by stevieb (Canon) on May 10, 2018 at 16:51 UTC
Re^5: Passing a pointer to a .NET DLL by paulorfmmb (Acolyte) on May 10, 2018 at 17:27 UTC
Re: Passing a pointer to a .NET DLL ( Win32::OLE::Variant?) by beech (Parson) on May 10, 2018 at 21:09 UTC
Hi, What does oleview tell you? Maybe you have to use something https://metacpan.org/pod/Win32::OLE::Variant#Variant-arrays?	[reply]