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Questions tagged [dcom]

Distributed COM (DCOM) is a protocol that enables software components to communicate with one another over a network.

DCOM is the distributed extension of COM. It specifies the additional infrastructure that is required to further extend COM to networked environments and enable software components to communicate with one another over a network. DCOM is designed for use across multiple network transports, including Internet protocols such as HTTP. It is based on the OSF's DCE RPC specification and implemented as a layer over Microsoft RPC.

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Cannot receive OPC A&E events remotely via DCOM between WinXP SP3 VMs

I can't receive A&E events remotely, via the DCOM connection. I am familiar with DCOM trickery and configured OPC DA many times, but this is not the case. For instance, I've composed the proof-of-concept configuration consisting of two virtual…
Minor Threat
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COM / DCOM: Server stub does not allocate memory for new methods in existing interface

I am new to COM. I have the task to extend an existing COM Server with new functionality. Extending or rewriting existing methods works fine, however, I added a new method that returns a number, but I get an exception (0xC0000005: Access violation…
Spacy
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Interface safecall, implementation not safecall

I have an interface to use over DCOM technology. All methods defined in the interface have safecall directive. However, in a client side, I want to reflect this object in an TObject to avoid transit with the interface each time I need read…
EProgrammerNotFound
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PHP 5.4 How to include OCX file

I have installed latest XAMPP having PHP 5.4 on windows 7. I am looking to use OCX file using PHP, I successfully registered it using regsvr32 command. At the same time following settings are enabled in php.ini…
user2546719
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Which do I choose for hosting my in-proc server in a separate process - COM+ or DCOM?

I need to shield a 64-bit COM component consumer from the 32-bit native C++ ATL in-proc COM component. Seems like both COM+ and DCOM can host my in-proc component in a separate process and do the marshalling so that both me and the consumer…
sharptooth
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How does this strange 32-bit/64-bit interop solution work?

I'm currently maintaining a piece of software that we outsourced couple of years ago and that is poorly documented. The piece is a COM server for consuming by third-party applications and an installer that does all necessary deployment. There's the…
sharptooth
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Calling COM Object inside TThread

In order to test the performance of the application, receiving many requests at the same time, I created an application that, inside threads, opens a connection using the TDCOMConnection creates a TClientDataSet, associates ProviderName and Inserts,…
EProgrammerNotFound
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Perl, IIS 7 and DCOM

I am working on a website which uses IIS 7 and tries to create a COM server on remote machine. The flow is: IIS_7_Computer -> Perl Script 1 -> Perl Script 2 -> Win32::OLE ---DCOM---> COM object on destination machine The account I am using is…
neel roy
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DCOM singleton replacement

We have an old legacy web application. The architecture consists of: (classic) ASP pages serving client's browsers; VB script, thousands of them out-of-process DCOM server called by ASP (IIS); MFC, singleton, exe database; one or more…
Peter Ivan
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How to solve: COM class factory for component with CLSID error 80080005 ASP.NET

I'm stuck with this: This is my scenario: I'm creating a website that the user select a Word document, a webservice save it in RTF format, and then I read the RTF document to show in Crystal Reports. First the user select the document (.doc, .docx)…
Lexsoul
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How to configure DCOM configuration for Export To Excel?

I am implementing Export To Excel functionality in one of my asp.net application. I have two servers(QA and Development). In Development server it works fine but in QA server i am getting below error. An exception of type…
user968441
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DCOM and OpenMPI

I did the DCOMCNFG with both the launch and the remote access permissions, granting my local logon on each node . Have OpenMPI_v1.6.1-x64 installed in root and remote machines. HAve specified the path of .exe in the target node. But while running…
tony
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How are "absolute" and "self-relative" security descriptors manipulated in C#?

I'm toying with code from here that uses RawSecurityDescriptor class to read a security descriptor from Windows registry, alter it and then store the altered descriptor back. That's basically the same as what "dcomperm" Microsoft SDK sample…
sharptooth
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Anyone made DCOM working with CoCreateInstanceEx in Windows 7

I 'm fed up trying to instantiate a remote object. dcomcnfg used, access enabled to all, Windows 7, same workgroup PCs. CoInitializeEx(0,COINIT_APARTMENTTHREADED); CoInitializeSecurity(0, -1, NULL, NULL,RPC_C_AUTHN_LEVEL_DEFAULT,…
Michael Chourdakis
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RDCOMEvents package in R does not load - needed to run Excel / R communication example

Is there a version of the package RDCOMEvents that works in recent versions of R (2.14 or 2.15)? I've been trying to get the example on the penultimate page of http://www.stat.berkeley.edu/~nolan/stat133/Fall05/lectures/DCOM.pdf to work - the one…
Tim P
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