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Re: COM Status in .NET

Tom Archer12-May-02 6:19

Tom Archer

12-May-02 6:19

zakimurtaza wrote:
i am not trying to paly down the .NET here,

You misunderstood, mate. I was referring to the information you were getting from other sources. I've, myself, read many articles saying things like COM is dead under .NET and was really just letting you know that this rumours are greatly exaggerated.

zakimurtaza wrote:
I am working in .NET so i had to confirm what i had read and also get some views on it from other ppl

That is the way to learn and certainly the approach I take.

Cheers,
Tom Archer
Author - Inside C#, Visual C++.NET Bible

how to load a conventional DLL in a COM Server?

GooGoo8-May-02 19:20

GooGoo

8-May-02 19:20

how to load a conventional DLL in a COM Server?

Re: how to load a conventional DLL in a COM Server?

-Dy8-May-02 23:49

-Dy

8-May-02 23:49

The same way as you would in any other application. You can use LoadLibrary or link the .lib file, COM makes no reserve on this...

At least I hope so - the COM server I'm building for work does it Unsure | :~

Dylan Kenneally
London, UK

Re: how to load a conventional DLL in a COM Server?

GooGoo9-May-02 17:33

GooGoo

9-May-02 17:33

What I want to know is how to set the path of DLL?It seems that I cannot locate the DLL.I wrote the full path in the LoadLibrary,but it failed.

Re: how to load a conventional DLL in a COM Server?

-Dy9-May-02 22:43

-Dy

9-May-02 22:43

What message did it fail with? It's not something silly like not having your path wrapped in quotes ("\"c:\develop\my dll\lib.dll\"") when theres a space in the path is it?

Dylan Kenneally
London, UK

how to register a com dll with c++ code?

7-May-02 14:25

can anybody tell me how to register a com dll with c++ code? better give me some piece of code, thanks!;P

Richy

Re: how to register a com dll with c++ code?

Paul M Watt7-May-02 14:51

Paul M Watt

7-May-02 14:51

Load the dll into your process with load library, then call GetProcAddress for DllRegisterServer and call that function. This is how regsvr32 registers the DLL.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: how to register a com dll with c++ code?

safepage14-May-02 3:29

safepage

14-May-02 3:29

Use DLLRegisterServer(), I think this explains it...

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnaxctrl/html/msdn_ctlreg.asp

-----
Andrew Farrell
Liquid Technologies
http://www.code-generator.com

Re: how to register a com dll with c++ code?

Carlos Antollini14-May-02 4:55

Carlos Antollini

14-May-02 4:55

typedef HRESULT (STDAPICALLTYPE *CTLREGPROC)() ; // Requires stdole.h
HMODULE hModule = ::LoadLibrary(m_strPathName);
CTLREGPROC DLLRegisterServer = (CTLREGPROC)::GetProcAddress(hModule,"DllRegisterServer" );
DLLRegisterServer();
::FreeLibrary(hModule);

Regards

Carlos Antollini.
www.wanakostudios.com
Sonork ID 100.10529 cantollini

Do I need Variants for VB compatability?

JohnnyG7-May-02 9:56

JohnnyG

7-May-02 9:56

I'm a newbie and have just read one whole entire book on COM and part of another. I understand most but not all of it. I might have missed this but if I want to develop a COM object or ActiveX control for use by Visual Basic, do I have to use variant data types (in my Visual C++ server code) or will it get automatically converted from the type library? I guess I'm talking about for automation purposes/late binding. Though, I'm not sure.

Re: Do I need Variants for VB compatability?

soptest7-May-02 11:08

soptest

7-May-02 11:08

You can use any automation types.

soptest

Re: Do I need Variants for VB compatability?

JohnnyG8-May-02 3:10

JohnnyG

8-May-02 3:10

Ok. Thanks. Yes, now I recall the other automation data types. I think I got confused with example in book saying something about using Variants was better for automation late binding...maybe it was referring to the script languages.

Re: Do I need Variants for VB compatability?

soptest8-May-02 8:09

soptest

8-May-02 8:09

Yes, variants for scripts.

soptest

QI for IEnumVARIANT failed on the unmanaged server

Travis7-May-02 8:20

Travis

7-May-02 8:20

Hello all...

I have a VB6 COM component that exposes a collection class I wrote using Function NewEnum() as IUnknown to enable for each iteration of the collection. The procedure attributes are set correctly to -4, hidden.

When I try to iterate the collection via interop using the vb.net code below, I get "QI for IEnumVARIANT failed on the unmanaged server," but only when executing it in the code behind an asp.net page. works fine behind a .net windows form. same problem if I attempt it in C#.

Dim rdfs As ReportMgr.ReportDefs
Dim rdf As ReportMgr.ReportDef

rdfs = New ReportMgr.ReportDefs()

rdfs.Refresh()
For Each rdf In rdfs
System.Diagnostics.Debug.WriteLine(rdf.Key)

Next

Any ideas?

Travis

COM uses DDE?

6-May-02 19:33

What kind of in-proc communication uses local COM server (.exe)? May be DDE?

Re: COM uses DDE?

Carlos Antollini7-May-02 3:40

Carlos Antollini

7-May-02 3:40

COM comunication. Is a kind of RPC communication Wink | ;)

Best Regards

Carlos Antollini.
www.wanakostudios.com
Sonork ID 100.10529 cantollini

http://www.windowsitlibrary.com/Content/356/08/1.html

soptest7-May-02 8:03

soptest

7-May-02 8:03

lrpc - local RPC

http://www.windowsitlibrary.com/Content/356/08/1.html

soptest

Re: COM uses DDE?

Paul M Watt7-May-02 9:40

Paul M Watt

7-May-02 9:40

COM uses memory mapped files for interprocess communication if the two processes lie on the same machine.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: COM uses DDE?

David Salter14-May-02 9:51

David Salter

14-May-02 9:51

My_Wuestion wrote:
May be DDE?
Not any more, but I seem to remember reading that it did in the happy days of Windows 3.1

N-tier architecture

6-May-02 18:26

Hi,

Can anyone let me know where on the net I can find good & simple explanation about n-tier architecture & design?

Thanks in advance
Hitesh

old Problem

mattcupryk6-May-02 14:31

mattcupryk

6-May-02 14:31

Problem with finding msword.olb, where can I download these files.
To incorporate COMs.

Thanks.

URGENT

Re: old Problem

soptest6-May-02 15:17

soptest

6-May-02 15:17

<drive>:\Programm Files\Microsoft Office\Office\MSWORD9.OLB
It goes with MSWord application

soptest

Re: old Problem

mattcupryk6-May-02 15:19

mattcupryk

6-May-02 15:19

I don't have it.

Re: old Problem

David Salter14-May-02 9:53

David Salter

14-May-02 9:53

Are you running Word 98 or later?

I have had problems where I couldn't find the file with earlier versions of Word.

Re: old Problem

mattcupryk14-May-02 9:59

mattcupryk

14-May-02 9:59

I am running office xp pro. I cannot find the files.
If someone could help me. That would be amazing. I really appreciate u're help.

Thank-you.
Blush | :O

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