From: Richard A Morningstar
Thanks! Got it working!
Adam Nathan <[EMAIL PROTECTED]>@DISCUSS.DEVELOP.COM> on 04/23/2002
03:44:30 PM
Please respond to dotnet discussion <[EMAIL PROTECTED]>
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Subject: Re: [DOTNET] InterOp and Safearrays
No, if the input type library says:
HRESULT MethodA([in] VARIANT saUnks);
then the output assembly should contain (in IL Assembler syntax):
instance void MethodA([in] object marshal(struct) saUnks)
runtime managed internalcall
Adam
-----Original Message-----
From: Rick Morningstar [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 23, 2002 10:45 AM
To: [EMAIL PROTECTED]
Subject: Re: [DOTNET] InterOp and Safearrays
From: Richard A Morningstar
The imported interop code was:
MethodA([in] Object marshal(SafeArray Variant) saUnks) ...;
This is correct?
Adam Nathan <[EMAIL PROTECTED]>@DISCUSS.DEVELOP.COM> on 04/23/2002
01:28:57 PM
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Subject: Re: [DOTNET] InterOp and Safearrays
You shouldn't be modifying the signature in this case because you're
treating a single VARIANT (that should contain an array of VARIANTs) as
an array of VARIANTs. You should be able to leave the imported Interop
assembly alone and still use the C# code you have below.
-----Original Message-----
From: Rick Morningstar [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 23, 2002 9:44 AM
To: [EMAIL PROTECTED]
Subject: [DOTNET] InterOp and Safearrays
From: Richard A Morningstar
I have a legacy COM Object with a signature like te following:
HRESULT MethodA([in] VARIANT saUnks);
Where this variant is a SafeArray of Variants (where each variant in the
SafeArray is of type VT_IUNKOWN).
I have modified the generated Interop assemblyas follows based on info
on
this list and books, but can't quite get it to work:
MethodA([in] Object[] marshal(SafeArray Variant) saUnks) ...;
My C# client code looks as follows:
Object[] sa;
sa = new Object[1];
sa[0] = new UnknownWrapper(SomeComInterOpObject);
obj.MethodA(sa);
The legacy COM object looks at the vt field in the input parameter to
check
the type passed, and this field seems to be random garbage.
Any ideas?
Thanks!
Rick
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