What is COM

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What is COM

What is COM ?

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Microsoft’s COM is a technology for component software development. It is a binary standard which is language independent. DCOM is a distributed extension of COM.

2007-10-22, 5066👍, 0💬

How do we create DCOM object in VB6
How do we create DCOM object in VB6? Using the CreateObject method you can create a DCOM object. You have to put the server name in the registry. 2007-10-22, 7880👍, 0💬

How can we use .NET components in COM
What is CCW (COM callable wrapper) ? or How do we ensure that .NET components is compatible with COM ? .NET components can not be used in straight forward way with COM. You will need to create CCW in order that COM components communicate with .NET assemblies. Following are the different approaches t... 2007-10-22, 6052👍, 0💬

How can we make Windows API calls in .NET
How can we make Windows API calls in .NET? Windows API call are not COM based and they are invoked through Platform Invoke Services. Declare StringConversionType (Function | Sub) MethodName Lib "DllName" ([Args]) As Type ã StringConversionType is for what type of conversion should take place. Eithe... 2007-10-22, 5916👍, 0💬

How to implement DTC in .NET
How to implement DTC in .NET ? DTC is implemented using COM+. Following are the steps to implement COM + in .NET :- ã gEnterpriseServiceh namespace has all the classes by which we can implement DTC in .NET. You have to add reference gEnterpriseServiceh namespace. omits it all together, then w... 2007-10-22, 5841👍, 0💬

Can you explain what is DCOM
Can you explain what is DCOM ? DCOM differs from COM in that it allows for creating objects distributed across a network, a protocol for invoking that object’s methods, and secures access to the object. DCOM provides a wrapper around COM, hence it is a backwards compatible extension. DCOM uses Remot... 2007-10-22, 5545👍, 0💬

What is RCW
How can we use COM Components in .NET? .NET components communicate with COM using RCW (Runtime Callable Wrapper). Following are the ways with which you can generate RCW :- ã Adding reference in Visual Studio.net. See figure below (Adding reference using VS.NET 2005). Wrapper class is generated and ... 2007-10-22, 5459👍, 0💬

When we use windows API in .NET is it managed or unmanaged code
When we use windows API in .NET is it managed or unmanaged code ? Windows API in .NET is unmanaged code. Note:- Even though VB6 and V C++ has gone off still many people do ask these old questions again and again. Still there are decent old application which are working with COM very much fine. So in... 2007-10-22, 5115👍, 0💬

What is COM
What is COM ? Microsoft’s COM is a technology for component software development. It is a binary standard which is language independent. DCOM is a distributed extension of COM. 2007-10-22, 5067👍, 0💬

Can you describe IUKNOWN interface in short
Can you describe IUKNOWN interface in short ? Every COM object supports at least one interface, the IUnknown interface. All interfaces are classes derived from the base class IUnknown. Each interface supports methods access data and perform operations transparently to the programmer. For example, IU... 2007-10-22, 4978👍, 0💬

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