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• Fastest way to call a COM objects method without using a RCW

  - by Nathan W

  I'm trying to find the cleanest and fastest way for calling a COM objects methods. I was using a RCW for the object but every time a new version of the third party COM object comes out its GUID changes which then renders the RCW useless, so I had to change and start using Type mytype = Type.GetTypeFromProgID("MyCOMApp.Application"); so that…

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• COM C# Memory leak Tracing

  - by maxfridbe

  Is there a way to find out the memory usage of each dll within a c# application using com dll's? Or what would you say is the best way to find out why memory grows exponentially when using a com object (IE. Whether the COM object has a memory leak, or whether some special freeing up of objects passed to managed code has to occur(and/or how to do…

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• Usage of Minidump within a COM Object

  - by nimo

  hi, I'm developing a COM dll which is an add-in to MSoffice. Since I'm not creating any logs within add-in I would like to add a crash report generator into my add-in. Hopefully 'Minidump' would be the best choice, but I have never use Minidump inside a COM object. I appreciate if somebody can point out possibilities of creating such crash…

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• Strategies for Accessing a Application with a COM API From PHP

  - by Alan Storm

  Background: Experienced PHP developer with a mostly *nix background. I'm writing a PHP application that needs to interact with a proprietary 3rd party system. The 3rd party system is Windows only. The PHP application will be living on a separate Linux based system The 3rd party application has been described as having a "COM API" that…

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• WIX: COM unregistration when removing one of two programs

  - by madbadger

  Hello, I am relatively new to WiX. It is a great tool, but I still need some time to learn it better. I have encountered a problem with registration and unregistration of a COM component. I have created installers for two applications, lets call them A and B. Both are using the same COM component. I have used the heat tool, as…

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• How to call interface API from within COM server

  - by Alien01

  I have one com server with some interfaces exposing some API's COM class looks like below class ATL_NO_VTABLE CTask : public CComObjectRootEx<CComSingleThreadModel>, public CComCoClass<CTask, &CLSID_Task>, public ITask { public: STDMETHOD (Task)(); STDMETHOD (ABC)(); ... } Now this com server…

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• How to load single COM instance for multiple application instance

  - by Nimo

  Hi, I'm creating a COM dll and it will be loaded by VBA. However, I noticed that for every excel instance (workbook), a new COM object is loading to memory. But I need to maintain single COM state irrespective of number of Excel instances exists. Please help me achieve this purpose . Thank you

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• Need to call COM component using reflection in .NET

  - by Usman

  I need to determine the COM component(unmanaged code) type and invoke the exposed interface's methods using reflection in C# at runtime. First What member of "Type" tells that type is COM component and we can take CLSID at runtime? Is Type.COMObject? I need to call methods of exposed interfaces as they called in unmanaged…

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• Learning COM - Which book to follow?

  - by bdhar

  I have access to Inside COM (By Dale Rogerson) and Essential COM (By Don Box). Which one is better for learning COM?

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• COM/DCOM problem when hosting executable is run as a service

  - by Mitch

  I am struggling for days now with the following problem: We have an executable that hosts a COM server, say x.exe. The COM object is instantiated as follows on the calling site: hRes = CoCreateInstance(CLSID_InterceptX, NULL, CLSCTX_SERVER, IID_IInterceptX, (void**)&pInterceptX); It all works fine…

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• Difference between COM and DCOM ?

  - by Mac

  What is the difference between COM and DCOM ?

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• How to declare and implement a COM interface on C# that inherits from another COM interface?

  - by Carlos Loth

  I'm trying to understand what is the correct why to implement COM interfaces from C# code. It is straightforward when the interface doesn't inherit from other base interface. Like this one: [ComImport, Guid("2047E320-F2A9-11CE-AE65-08002B2E1262"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface…

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• C# COM Cross Thread problem

  - by user364676

  Hi, we're developing a software to control a scientific measuring device. it provides a COM-Interface defines serveral functions to set measurement parameters and fires an event when it measured data. in order to test our software, i'm implementing a simulation of that device. the com-object runs a loop which…

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• COM Pointers and process termination

  - by Tony

  Can an unreleased COM pointer to an external process (still alive) cause that process to hang on destruction? Even with TerminateProcess called on it? Process A has a COM interface pointer reference to Process B, now Process B issues a TerminateProcess on A, if some COM interface pointer to Process B in Process…

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• Centralised/shared COM DLL, possible?

  - by vikp

  Hi, We have a system that makes a use of 3rd party COM DLL written in vba We have a centralised web application and 1-50 client machines that must reference that COM DLL in order to use our centralised web application. The COM DLL is going to be updated rapidly in the future, which means that it has to be…

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• Generate an ID via COM interop

  - by Erik van Brakel

  At the moment, we've got an unmaintanable ball of code which offers an interface to a third party application. The third party application has a COM assembly which MUST be used to create new entries. This process involves two steps: generate a new object (basically an ID), and update that object with new…

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• COM on Windows7 and Visual Studio

  - by vikasde

  I registered a COM dll (under administrator) using regsvr32, which I want to use in Visual Studio 2008 (under administrator) for my project in Windows 7. Now, when I try to use the interfaces and classes from the COM, then I can't see any of the methods. When I use the object browser to view the COM…

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• Does Scheme work with Microsoft COM?

  - by Martin

  I'm new to Scheme -- the functional programming language and I like it a lot for its first-class/higher-order functions. However, my data comes from a COM source with an object-oriented API. I know Scheme and COM belong to different programming paradigms, but I'm wondering if there is any…

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• SQL CLR Assembly Error 80131051 when late binding to a registered C# COM .dll

  - by Shanubus

  I must have hit an unusual one, because I can't find any reference to this specific failing anywhere... Scenario: I have a legacy SQL function used to transform(encrypt) data. This function is called from within many stored procedures used by multiple applications. I say this, because…

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• PHP: Why Cookies only sent to http://www.xxx.com and NOT http://xxx.com

  - by Axel

  Hi, I have a php login which sets 2 cookies once some one login. the problem is that if you login from : http://www.mydomain.com and you go to http://mydomain.com you will find your self not logged in, I think that's because the browser only send the cookies to the first syntax. It's…

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• Mysql-how to update the "domain.com" in "address@domain.com"

  - by w00t

  Hi there, In my database I have a lot of users who've misspelled their e-mail address. This in turn causes my postfix to bounce a lot of mails when sending the newsletter. Forms include (but are not limited to) "yaho.com", "yahho .com" etc. Very annoying! So i have been trying to…

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• Retrieving Data related to a top-level object from parse.com using PHP

  - by Albeert Tw

  I am retrieve related data using parse.com and PHP I get the top-leve object without problems but I can't access related data. ([myRelation] => stdClass Object ( [__type] => Relation [className] => other)) Please refer to my code below: $className = "myClass"; $url =…

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• Exposing C# COM server events to Delphi client applications

  - by hectorsosajr

  My question is very similar to these two: http://stackoverflow.com/questions/1140984/c-component-events http://stackoverflow.com/questions/1638372/c-writing-a-com-server-events-not-firing-on-client However, what worked for them is not working for me. The type library file,…

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• VB.Net plugin using Matlab COM Automation Server...Error: 'Could not load Interop.MLApp'

  - by Ben

  My Problem: I am using Matlab COM Automation Server to call and execute matlab .m files from a VB.Net plugin for a CAD program called Rhino 3D. The code works flawlessly when set up as a simple Windows Application in Visual Studio, but when I insert it (and make the…

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• How to solve "catastrophic failure" with 32-bit COM component in SysWOW64\cscript or wscript

  - by kcrumley

  I'm trying to run a VBScript script that uses a 7-year-old 3rd-party 32-bit COM component on Windows Server 2008 R2, with the command-line 32-bit script host, SysWOW64\cscript.exe. When I call CreateObject on the class, it appears to be successful, but the very…

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