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Great Reads

Excel Pixelating Image Creator

by simonp_ca

Use Excel worksheet's cells as pixels to render real image (for fun and experiment)

Component for Fast Pass/Retrieve Data from Excel

by Jose Maria Estrade

ExcelCommunicator allows to pass and retrieve data to/from Excel as datasource/calculation-engine

Retrieve Size of a file in a Unix server (via SFTP) from VB 6.0 or .NET

by gmaran23

Query the properties, or download a file present on a Unix server to a Windows server via SFTP connection

Using COM Objects in Scripting Languages -- Part 1 (Tcl/Tk)

by Sharjith

This article shows how to instantiate a COM object in Tcl/Tk and use its methods and properties.

Latest Articles

Compact and Repair Access Database using C# and Late Binding

by Alexander Yumashev

The code compacts and repairs an MS Access database from C# code using a JRO.JetEngine COM-object. Binding occurs at runtime, no references, no interops. Pure System.Reflection.

Using an Access, MySQL, PostgreSQL or SQLite Database from VBA

by Pragmateek

Using an Access, MySQL, PostgreSQL or SQLite Database from VBA

Excel Pixelating Image Creator

by simonp_ca

Use Excel worksheet's cells as pixels to render real image (for fun and experiment)

Send Fax with fax-modem in C#

by Md. Faroque Hossain

Sending Faxes with fax-modem and telephone line in C#

All Articles

COM+

Windows 7 File-properties "Version" Tab Shell Extension

19 Oct 2010 by "Fish" (David B. Trout)

Simple parsing of VS_VERSIONINFO version information strings displayed in an XP-style file-properties "Version" tab

Debugging C# COM assembly in VS2010

26 Jul 2013 by 2006 Flauzer

I'm developing a C# assembly which is to be called via COM from an old vb6 (ie, "native" win32, not .net) application. I've installed VS2010 Premium in a W7 x64 and simply my goal is to use Visual Studio to debug the C# code...Other hint: the C# assembly is compiled in "x86 mode" (.NET4)...

Debugging C# COM assembly in VS2010

29 Jul 2013 by 2006 Flauzer

From menu Debug->"Attach to.." option, please point the correct process ie, dllhost.exe COM Surrogate. and not win32 client....

Adding footnotes to a Word document programatically (MS Office 2007 Word)

2 Oct 2008 by Abey Thomas

This is an article about adding footnotes to a Word document (MS Office 2007) programmatically.

Adding An Image to a Word Document Programmatically (Microsoft Office 2007)

6 Oct 2008 by Abey Thomas

This article is about the details of adding an image to a Word document programmatically.

Installing and Using side-by-side native assemblies from C# and MC++

10 Sep 2008 by akiran

This article details how to create, install and use side-by-side native assemblies from C# and MC++.

TransactionScope in .NET 1.1

1 Jun 2005 by Alexander Shirshov

Emulate TransactionScope functionality coming in .NET 2.0 with .NET 1.1.

SQL-Server-2005

SQL-server-2000

Compact and Repair Access Database using C# and Late Binding

20 Apr 2021 by Alexander Yumashev

The code compacts and repairs an MS Access database from C# code using a JRO.JetEngine COM-object. Binding occurs at runtime, no references, no interops. Pure System.Reflection.

Passing WCF Transactions to COM+

28 Aug 2012 by Alexandros Pappas

This article provides a program to demonstrate how to pass WCF transactions to COM+.

Measuring COM+ Performance

21 Jun 2016 by Alexandros Pappas

Measuring COM+ performance

How does the COM+ transaction timeout work?

12 Dec 2016 by Alexandros Pappas

I do not understand, how the transaction timeout works in COM+. I have the class ClassComPlus which inherits from ServicedComponent, has transaction timeout attribute set to 1 second, and has a method SubSleep, that sleeps 3 seconds. I expect, the client which calls the method SubSleep to get an...

How does the COM+ transaction timeout work?

12 Dec 2016 by Alexandros Pappas

With the help of Microsoft, I finally understood how the COM+ transaction timeout works. The COM+ transaction timeout, is a timeout on the transaction, not on the method call. The method will execute, as long as it has to execute. The moment the first transaction is enlisted, the transaction...

The Stub Received Bad Data

25 May 2011 by amarasat

Hello everyone,I am trying to connect to a remote machine OPC server:Remote Machine:Windows Vista Business2007 copyright, Service Pack 2Client Machine:Windows XP professionalVersion 2002 Service Pack 3Error:The Stub received Bad DataFailed to get plug-in types. ...

Component object model definitions and elements unable to absorb

3 Dec 2016 by Amr.Mohammad87

I read article(s) about COM, and one of those article(s) was here within CodeProject. I need to emphasize on certain points which are not mentioned in each of those article(s) even the one posted here and they causing me big confusion in understanding COM. 1- I know that an interface is...

A Brief Tutorial On How To Develop DirectShow Source Filter For Beginners

22 Feb 2010 by Aric Wang

The article will give you an idea on how to design a source filter.The source filter creates samples and outputs it from its output pin.

C# COM Interop, try to access remote server gets access denied exception

6 Jun 2012 by barneyman

here's some code comments, I've referred to a LOT in recent years ;)/*If you are reading this because you're trying to get a DCOM component working, and you're trying to establish why THIS oneworks, and yours doesn't, you've come to the right place ...Fundamentally, DCOM works thru...

Can I create DCOM server in Visual Studio 2010

27 Jun 2012 by barneyman

you certainly can, as long as you're not using the Express editionAny COM object can be made DCOM'able with ATL - use APPIDs to configure thatSecurity will be your biggest problem - DCOM Security Enhancments[^]AppID Info - C# COM Interop, try to access remote server gets access...

COM Interface & Complexe Type

7 May 2010 by Ben.Regaya.Hedi

Hi AllIm developping a COM Object to be used from NAVISION. I succeed to create it and call it from the code unit of Navision. but im able just to use the simple type variables like string,int bool, float...I want to know haw can I define a COM Object that return complexe data object as...

ExcelReader

12 Feb 2008 by BharadwajSonti

A tool to read the data from an Excel sheet into a C# string array

How to get the handle of a browser window?

12 Sep 2010 by billbaxter

Using the posting title "How to handle TAB" date Apr. 26, 2006, (article "Embed an HTML control in your own window using plain C") in my application's message loop, I've added this code:if (msg.message == WM_KEYDOWN && msg.wParam == VK_TAB){ // NOTE the msg gives msg.hwnd not hWeb ...

.NET Runtime Library for Delphi

11 Oct 2015 by Bismark Appah

.NET Runtime Library for Delphi

Implementing Message Queue Using Counting Semaphores

26 Jun 2009 by Bunty1983

Implementing message queue in C Sharp

MSN Floating Personal Message

31 Aug 2005 by cagatay.yildir.im

Showing floating text message on the MSN Messenger as a personal message

How to programmatically open a text file in Excel using VSTO

22 Sep 2006 by Casper Leon Nielsen

We can easily start Excel and open a given workbook - however, it takes some trickery to open a text file without using the commandline.

Com component error with WCF service while login

18 Sep 2015 by chandrayog.2

Hi,I am facing a weird issue for my one of my application. I have a wcf service hosted on a server. I access this service via a windows application from my system.This service was working fine few days back but somehow returning a com component error now when ever i try to...

How To Use a .NET Class with Lists in VB6

9 Jan 2009 by chihuase

It's easy to create a wrapper for .NET classes that you can use in VB6, but there are some difficulties with the types, specially Generic lists

Consume C# COM+ class from unmanged C++

7 Jul 2011 by Christian Graus

The point of COM is that you shouldn't need to do anything different, regardless of the language used. So any tuturial on using COM+ from C++ should work fine.

How to change the following codes to control something as chat program

3 Aug 2012 by Christian Graus

Instead of trawling the web for random code, start from the top. A simple chat program, via the web, is probably going to be in a browser. Therefore, you'd write it using a back end like ASP.NET, and with lots of javascript/AJAX to handle the chatting.

OTS COM Elevation. Standard user gets elevation prompt, can create COM object, and call functions, but the functions don't change the registry.

31 Jan 2012 by Christine_Irene

Hi,I have a COM dll with a class in it.I have an app with a UAC level of asInvoker. This app creates a COM object as administrator.Everything works fine running as administrator, and even logged in as standard user, right->click runas administrator.However, when I log in as...

Convert DATE to String in comm c++

1 May 2013 by Coder Block

I spend whole night to find out single example to convert DATE datatype of c++ to string in COMM. My interface function returns following values and i want show that values in human redable format. Like,DATE JobStartTime;CurrentJob->get_StartTime(&JobStartTime);And it return valules like,...

C++ COM\DCOM version management

8 Jul 2013 by Coder Block

This is may be very old problem but i really fustrating with same due to some API issues.I am using some Desktop application API who's version changes each and every month with new feature. Lets consider following scenario, A Company ABC LTD introduce one window application ABCPRO now when...

%1 is not a valid win32 application error

2 May 2016 by CPallini

Unless I misunderstood the documentation, you cannot do that. See Process Interoperability (Windows)[^]:On 64-bit Windows, a 64-bit process cannot load a 32-bit dynamic-link library (DLL). Additionally, a 32-bit process cannot load a 64-bit DLL.

Creating a COM DLL with VS 2005: Advanced Walkthrough

7 Jul 2009 by CS Rocks

This article demonstrates how to manually create a COM DLL with VS 2005.

Recursive Assertions Obscure The Real Problem with a Phantom Assertion

2 Jul 2008 by CurtD

Assertions are a very effective debugging tool for C/C++ code. But, a very subtle problem exists with assertions that can cause you to waste a lot of debugging time chasing the wrong problem.

0x80040154 Class not registered error while creating instance of a 64-bit registered COM DLL

11 Jul 2013 by Dattatraya Mengudale

Please refer..http://www.gfi.com/blog/32bit-object-64bit-environment/It will really solve your problem...

Adobe Indesign API using Dot Net

27 Jul 2011 by DaveAuld

Why don't you compare the two product editions on the Adobe website and see which one fits your needs;Indesign[^]Indesign Server[^]Or hop over to the Indesign SDK[^] pages for more on the API and tools.(You also asked this question at the foot of the article, which was the...

A Cool Vista Sidebar Gadget Style CPUInfo Animate Control! (Fixed)

8 May 2008 by Davidwu

A Cool Vista Sidebar Gadget Style CPUInfo Animate Control! (Fixed)

How to add morethan one interface for a COM object

28 Jan 2011 by Debojyoti Majumder

Have you updated the .idl file?If not then update it.Use the midl tool to compile your .idl file.Add the changed files (stub and client) in your project.Then use your COM object.Hope this have helped you. ;P

Restoring Datbase Using BatchFile(*.Bat)

9 Jun 2008 by Deepak.M

This article describes on building a Database from scratch using Batch File from the existing Database

SQL-Server-2005

SQL-server-2000

OLE or Com Class Problem!

22 Apr 2012 by dieforwhat

Hi everyone,I have probelm with ole classes or I assume so.All of may applications stop working after one restart and says 'Class not registered'.I thouhgt it is about ole classes and wonder if there is centeral app to control this classes or this system that starting or switching that app may...

Register COM component with different version

24 Jul 2010 by Dragonfly_Lee

Hi guys,I met an issue when I am trying to register the COM component, which is created by C#. Here is the scenario:1.Create a strong name assembly using C# with two version, such as A.dll(1.0.0.0) and (2.0.0.0)2.Since a COM client need to use these two .net assemblies, then I tried to...

Using NHibernate in COM+ (.NET Enterprise Services) Distributed Transactions

2 Feb 2006 by Dustin Metzgar

Shows how to use NHibernate in a COM+ distributed transaction.

Using TIP (Transaction Internet Protocol) to Enlist Web Services into COM+ Distributed Transactions

4 Apr 2006 by Dustin Metzgar

Shows how to use TIP to communicate with web services in a COM+ distributed transaction.

C# COM Interop, try to access remote server gets access denied exception

6 Jun 2012 by El_Codero

Hi,please have a look at my hints a few weeks ago, maybe it works for you.Retrieve Operating system details of a remote computer using IP address[^]Regards

BHO Development using managed code

21 Mar 2012 by enamur

How to create a simple BHO using C#.

0x80040154 Class not registered error while creating instance of a 64-bit registered COM DLL

29 Oct 2012 by enhzflep

I'm still(hopefully will remain?) pretty wet-behind-the-ears with respect to COM work. Though I do note that the behaviour you report is the same as that which I observe when starting a 32bit COM server under either windows xp or 7.That is to say CLSIDFromProgId does just that - it returns...

Web-based Active Directory Login

9 Oct 2003 by Faisal Haroon

Web-based Active Directory Login

COMException : Remote procedure call failed. ? 0x800706BE

30 Jul 2013 by Farrell187

Hi AllI received a couple of dll's from our client. These i should register as COM components and consome in my simple console test application.Now. These dll's is being used to SIGN or VERIFY a string according to whatever algorithm they use.The 1 DLL that i consume... i can...

Native & Managed Interop Made Simple

14 Nov 2007 by Filipe Pereira

This article presents a simple calculator component example by using COM Interoperability basics.

Consume C# COM+ class from unmanged C++

7 Jul 2011 by fjdiewornncalwe

These tutorials may help you along the way.Interoperability Overview[^]http://blogs.msdn.com/b/jigarme/archive/2008/04/28/com-interop-sample-using-c-dll-from-c-application.aspx[^]

Copy Protection for Windows Applications

7 Sep 2009 by Foolomon

Describes the implementation of a key registration, installation, and validation methodology for Windows applications.

Copy Protection for Windows Applications (Part 2)

10 Sep 2009 by Foolomon

Describes the implementation of a key registration, installation, and validation methodology for Windows applications.

Copy Protection for Windows Applications (Part 3)

16 Sep 2009 by Foolomon

Describes the implementation of a key registration, installation, and validation methodology for Windows applications

Copy Protection for Windows Applications (Part 4)

21 Sep 2009 by Foolomon

Describes the implementation of a key registration, installation, and validation methodology for Windows applications

Enhanced Transparent Flash Control in C++

28 Apr 2011 by Fred van Lieshout

OLE container implementation for hosting a Flash Player control using C++, with support for calls and callbacks between C++ and Flash ActionScript.

Issue with QueryInterface

27 Jan 2011 by Ganesamoorthy.S

Hi All,I have tried to use QueryInterface by using the following code segment. the com component had been created by me and which has two interfaces. But the "queryinterface" returns E_NOINTERFACE.Kindlly help me, to come out of this issue.Thanks,Ganesamoorthy HRESULT...

How to add morethan one interface for a COM object

27 Jan 2011 by Ganesamoorthy.S

Hi,I have created a COM DLL Server Project and accessed it by creating a clinet having CoCreateInstance().Then i have modified the COM server project by adding one more interface. In order to obtain the object for the second interface, i have called the QueryInterface function....

How to add morethan one interface for a COM object

28 Jan 2011 by Ganesamoorthy.S

I have completed this on my own.Adding interface to a COM, is as usual but if we suppose to use QUERYINTERFACE then it has to be implemented.I did it and got the expected result.

Communicating 64 bit exe or DLL with 32 bit components

20 Apr 2016 by Gayle123

I have a query regarding communicating 64 bit exe or dll with 32 bit components.is there any way to dll or we have to write a wrapper or directly we can have acces changing the registry settings.What I have tried:communicating 64 bit exe or dll with 32 bit components

%1 is not a valid win32 application error

2 May 2016 by Gayle123

I Created a 64 bit exe and 32 bit com dll ... i did neccesary changes in registry as suggested by some site .. now CoCreateInstance is returning :HRESULT_FROM_WIN32(ERROR_BAD_EXE_FORMAT) : %1 is not a valid Win32 application. HRESULTCould you please let me know why the error...

%1 is not a valid win32 application error

2 May 2016 by George Jonsson

How did you register your COM dll?By default the 64-bit version of RegSvr32 is used and you need to use the 32-bit version.See https://support.microsoft.com/en-us/kb/249873[^]And here is some general information: Process Interoperability (Windows)[^]

Creating mini media player

21 Apr 2009 by Gindi Bar Yahav

Creating mini media player using Windows Media Player COM

Retrieve Size of a file in a Unix server (via SFTP) from VB 6.0 or .NET

18 Feb 2013 by gmaran23

Query the properties, or download a file present on a Unix server to a Windows server via SFTP connection

.NET COM+ Transactions

12 Aug 2005 by hadhmy

Implementation of .NET COM+ Transactions

Add-in Programming

12 Jul 2010 by hamityildirim

Add-in - add-on programming and an example for Outlook add-in regions, views, rules, and reports.

MFC GDI+ ActiveX Arrow Control For Excel

23 Oct 2004 by Hing

An article on how to create an ActiveX control for Excel, and the technique to create an arrow using GDI+, some secondary school mathematics here, and some technique to link cell with Excel.

SoftG Application Framework 1.62

13 May 2009 by HotSoftG

Automation framework application development, realize the software functions and software frame separation. Support plug-in support theme

How to register COM in Component Services?

5 Nov 2015 by HRVP

Hi Friends, I want to register com+ in component services.i followed these steps:Opened Component Services->Computer->My Computer->Com+ Application Right Click Com+ Application->New->ApplicationIn the Wizard i given next->Create an Empty Application->Enter New Application...

My First COM+ Serviced Component

1 Nov 2009 by hussain.attiya

Just sharing my experience from six years ago, in 2003, when I was working as a developer.

Creating JavaScript arrays and other objects from C++

26 Jun 2010 by imagiro

How to create JavasSript arrays and other objects from C++ code and pass them to the script.

Web-based Data Access Object for Unmanaged Application

25 Apr 2013 by In the Face of God

Unmanaged code application accessing data in a database via Web Services without a database provider.

A simple solution for managing state of stateless transactional COM+ components

5 Dec 2001 by Ivo Ivanov

A reusable object-oriented framework for preserving state of stateless components.

Error on execution of a method (.NET / COM)

27 Jun 2013 by Jeneesh K. Velayudhan

I have one Initialize() in my class and I am calling a delegate wrapper method from this function as follows (the call back method will call around 20 times in a sec),public Initialize(){ CX_OUTPUT_CALLBACK cb = new CX_OUTPUT_CALLBACK(OutDelegateCb); ...

static-code-analysis

Error on execution of a method (.NET / COM)

28 Jun 2013 by Jeneesh K. Velayudhan

Thank you, Ron Beyer...It worked...:)

static-code-analysis

COM+ Object Pooling

31 May 2000 by Jeremiah Talkar

An introduction to the COM+ Object Pooling service

How to define a CATID and also which header file to include in order to define a CATID?

6 Feb 2013 by jesuraj.pradeep

How to define a CATID and also which header file to include in order to define a CATID?HRESULT RegisterClassReqCategory(const CLSID* rclsid, CATID rgcatid,BOOL bRegister = TRUE);I am getting the below error if I define a CATIDerror C2061: syntax error : identifier 'CATID'Kindly...

A C++ Firefox component intercepting/operating HTML DOM

10 Oct 2007 by Jia.Chen

This article uses a simple example to show how to build a Firefox component intercepting/operating DOM

How to define a CATID and also which header file to include in order to define a CATID?

6 Feb 2013 by Jochen Arndt

Take a look on the MSDN page for the function RegisterClassReqCategory[^]. At the bottom of the page is the Requirements table which states the header files that should be included. In your case it is ComCat.h. When opening that file, you will find the definition.

Convert DATE to String in comm c++

1 May 2013 by Jochen Arndt

You tagged MFC. So you can use the COleDateTime class which uses DATE internally and provides the Format()[^] function to convert it to a string:COleDateTime dt(JobStartTime);CString strJobStartTime = dt.Format(_T("%d/%m/%Y %H.%M.%S"));The above formats the string like the example from...

COM Interface & Complexe Type

9 May 2010 by Jonathan Davies

Ben.Regaya.Hed...

Component for Fast Pass/Retrieve Data from Excel

13 Mar 2009 by Jose Maria Estrade

ExcelCommunicator allows to pass and retrieve data to/from Excel as datasource/calculation-engine

Embedding Google Earth in a C# Application

8 Dec 2008 by Joseph Armbruster

How to embed the Google Earth scene in a C# application.

Distributed COM+ LCE using MSMQ over Corporate Network

3 Apr 2004 by jqd2001

Improve COM+ LCE reliabilty and scalability using MSMQ.

COM Elevation with admin - credentials

18 Oct 2010 by Karsten

This Question handles COM-Elevation. The mechanism ist discribed in various articls. The base work ist done with the funktion CoCreateInstanceAsAdmin. A Moniker is feeded with following string Elevation:Administrator!new:"clsid" and the COM-Server is connected via CoGetObject.When my client...

CreateInstance() fails with error code 1008 in C++ COM

23 Aug 2014 by KarstenK

The truths is: COM error are errors. (sounds nonsense but its true)If you cant find the string in the registry than it isnt registered!!! :-OFix it! => Run the register as admin and check the error code. It must be NULL.You better write: HRESULT hr =...

Microsoft Office 2003 Web Components / Alternative / Excel /

6 Feb 2014 by kbrj

I am working on a legacy application which was built on Classic ASP.This is a reporting application which quries the database and using COM objects it write the output to excel files by referencing Microsoft Office 2003 Web Components and Excel work book is displayed in front of the users....

Visio Add-On Getting Started

29 Mar 2010 by Krasnikov, Eugene

Getting Started in Visio Add-On creation (VSL project)

Adding scripting support to your Application using minimalistic aproach

5 Apr 2009 by Ladislav Nevery

One very simple way to add scripting support to your app without need to install or distribute anything

C# - Optical Marks Recognition (OMR) Engine 1.0

23 Dec 2013 by LamYongXian

This is an alternative for "C# - Optical Marks Recognition (OMR) Engine 1.0"

Lotus Notes COM Class Wrapper for .NET

30 Aug 2007 by LeeBear

This is just a VB.NET class wrapper for the Lotus Notes interfaces.

COM+ Running Process

28 Jul 2005 by M_Rizwan

Monitoring COM+ running applications.

How Can I Change The Background Color Of A Word Document Programatically ?

15 Jan 2016 by Maciej Los

I have no idea about ColorTranslator.On the other side msoCTrue is not supported. Please see: MsoTriState enumeration (Microsoft.Office.Core)[^]This should works:Dim oDoc As Document = Nothing'lateroDoc = ActiveDocument With oDoc .Background.Fill.ForeColor.RGB =...

Omron PLC Serial Interface

1 Aug 2011 by Mahdi Mansouri

Surpass Omron OCX OPC Component and use a user friendly .NET based class to interface Omron PLC Series

Fatek and Facon PLCs Communication Protocol Serial Interface

24 Jul 2011 by Mahdi Mansouri

Easily Surpass any OPC Component and use a user friendly .NET based class to interface Fatek and Facon PLC Series

DCOM Remote computer name

6 Dec 2010 by Manfred Rudolf Bihy

Hi Kanade,will work the same for internet. Of course the host addresses will either be IPs or something like myhost.mydomain.com. If you're going to do DCOM over the internet you might be interested in this little piece...

Extract Bookmark from PDF file

1 Nov 2012 by Md Kamruzzaman Sarker

Bookmark extraction from PDF files and showing it in a treeview.

Send Fax with fax-modem in C#

11 Dec 2016 by Md. Faroque Hossain

Sending Faxes with fax-modem and telephone line in C#

How to Integrate an OLE Object with SQL Server

15 Jun 2009 by Md. Marufuzzaman

This article will demonstrate how we can integrate T-SQL with an external application.

SQL-Server-2005

SQL-server-2000

OCX file registered but not registered?

21 Jun 2017 by Mel Padden

So the setup is as follows: 1. I have an Access VBA project which I have to maintain until we move everything over onto a new shiny platform. 2. This VBA project contains numerous reports, which use a .OCX charting component. This component was written about 15 years ago in C++. I have access...

How do you ADD a specific component with specific properties to a specific COM+ application in PowerShell?

15 Dec 2014 by Member 11303910

I am wanting to automate my server installations. Part of this includes Creating COM+ packages (which I do currently with PS). I then need to add components to these empty application packages. The DLLs have been pre-registered with RegASM. At the moment I am adding the components in...