COM object

Tests to see if the object represents a true COM object or if it is a proxy to a managed object.

I'm having problems when trying to invoke a method of a COM object which exposes more than one interface.

NET class and call the methods of the instance, just as if it were a COM object.

Using metadata derived from a type library, the runtime creates both the COM object being called and a wrapper for that object .

You can still make late-bound calls to such a generic type as long as the COM object implements the IDispatch interface.

The DCOM sample demonstrates how to call a COM object implemented in a Windows service from multiple clients running on different computers.

A suggested variant is to use thread-local storage to instantiate one instance of a COM object for each worker thread.

For each COM object or control you add, the wizard generates. Cpp and. H files, as well as an. Rgs file for script-based registry support.

More exactly, the CLR itself is not made of COM code, but the interface to the CLR is a COM object.

To simplify access to the interop assembly, add an Imports statement to the top of the class or module in which you will use the COM object.

The worker process, therefore, loads the CLR up as it were a COM object.

Attribute instructs the compiler to add metadata that allows a class to be exposed as a COM object.

Whenever the COM object and the managed thread are in incompatible apartments, all calls on the object are made through a COM-created proxy.

Is a COM object but the class identifier used to obtain the type is invalid, or the identified class is not registered.

Shows combining in one solution a simple COM object and a managed application.

Creates a server instance of a COM object identified by the object's class identifier (CLSID).

A . NET client can call methods on an active COM object, adjust its properties, and catch events originating on the server.

You must be able to implement a CoCreate-able COM object in the programming language.

An HTTP connection uses a COM object instantiated by IIS, called a data pump, which acts as a conduit for Analysis Services data.

A. NET Framework object that acts as a proxy for a reference-counted COM object.

Through this interface, information about other interfaces a COM object may support can be obtained.

A COM object is located in unmanaged memory and is not expected to move to another memory location.

Responses from the COM object are routed to the interop assembly and forwarded to your. NET Framework application.

Adding a COM object that must be registered to the Toolbox attempts to register the COM component.

Similar to Java Beans, an ActiveX control is a component and equivalent to an "OLE Object" and Component Object Model (COM) Object.

Allows only a single instance of the COM object for each executable (application).

Indicates to the compiler that the class should be exposed as a COM object.

NET client activates a COM object, the runtime generates an instance of the runtime callable wrapper (RCW) to wrap the COM type.

The new class inherits the properties of the base class in the COM object, overloads a method, and defines a new method to extend the class.

SharePoint sites do not support the COM Object data type.

Of a COM object, which attempts to obtain a specific interface pointer.

For interoperability , the common language runtime creates and initializes an apartment when calling a COM object .

Then , COM which is the base of OPC is introduced including the attritudes of COM, standard interfaces and the concept of COM object.

A COM object can support multiple interfaces, each representing a different view or behavior of the object.

A string that can be used by the compiler to uniquely identify an interface for the class when a COM object is created.

This method is used to explicitly control the lifetime of a COM object used from managed code.

Activation contexts allow an application to load a particular DLL version, COM object instance, or custom window version.

References to the members of the COM object are routed to the interop assembly and then forwarded to the actual COM object.

Returns a managed object of a specified type that represents a COM object.

Wraps the specified COM object in an object of the specified type.

A Component Object Model (COM) object that provides Automation-compatible interfaces.

Gets a direct pointer to a COM object that ensures that the unmanaged memory remains allocated.

The coclass proxy also contains a default parameterless constructor for creating an instance of the COM object it represents.

There are a couple additions that must be made to a COM object so it can run with the fully privileged token.

GetComInterfaceForObject is useful when calling a method that exposes a COM object parameter as an IntPtr type, or with custom marshaling.

Alternatively, the host could initialize the runtime using COM-object activation.

A COM object that implements the IClassFactory interface for the application was not registered.

An instance of the class corresponding to the Type object that represents the requested unmanaged COM object.

This wizard implements a connection point for a COM object.

An ActiveX control, in the very simplest form, is a COM object that supports the IUnknown interface.

If two instances of the COM object are created, then two instances of the wrapper are created.

The client creates an internal COM object called an event sink to prepare for incoming notifications.

Requests a pointer to a specified interface from a COM object.

The key in the internal hash table of the COM object in which to store the data.

You can inspect COM types, activate instances, and invoke methods on the COM object the same way you do for any managed type.

A string that can be used by the compiler to uniquely identify the class when a COM object is created.

Consequently, a COM object can be used as a managed object in the runtime.

Creates an instance of the COM object whose name is specified, using the named assembly file and the default constructor.

Method releases the managed reference to a COM object.

By default, when the COM object returns a failure HRESULT, the runtime throws a corresponding exception.

It will be necessary for you to use single-threading, for example, if your CLR program hosts a COM object that uses single-threading.

If your CLR program uses multi-threading, it cannot host a COM object that uses single-threading.

Method to create a server instance of a COM object.

Gets data referenced by the specified key from the specified COM object.

Object, which completes the pathway to the destination COM object.

If code uses a COM object, avoid sharing that COM object between application domains.

The constructor instantiates the COM object using the CLSID as specified in the coclass declaration in the type library.

You can get or set a property exposed by a COM object the way you get and set properties exposed by a managed class.

Sets data referenced by the specified key in the specified COM object.

Creates a server instance of a COM object.

The reference count will be decremented when the runtime performs garbage collection on the managed object representing the COM object.

Specifies the CLSID value of the COM object that being registered.

Implement the IProvideClassInfo interface for the COM object.

Indicates whether a specified object represents a COM object.

Creates an instance of the COM object whose name is specified.

Aggregates a managed object with the specified COM object.

Creates and returns a reference to a COM object.

On a COM object is the same as performing a cast operation in managed code.

This wizard inserts into the project a minimal COM object.

Every instance of a COM object has a single, unique wrapper, no matter how many interfaces the object implements.

Actually, the CLR is exposed as a COM object.

An object representing the specified unmanaged COM object.

Demonstrates how a managed project can host a COM object.

Control is browsing a COM object and the user renames the object.

The COM object containing the desired data.

The COM object in which to store the data.

Figure 2 shows the output from running this COM object from the command line.

And other built-in objects available to the COM object.

You can register a COM object by using the Regsvr32 utility included with the Windows operating system.

The client that connects to the DrawServ COM object.

How can I run COM object from remote server?

Is there a way to handle an event sent from COM object?

Instead, create a COM object that is equivalent to the script, producing a DLL.

Describes how to reuse an existing COM object.

The exception thrown when an invalid COM object is used.

Firstly, this thesis discusses COM fundamental knowledge, such as COM object, COM interface, COM connectable object and so on.

One way to do this is to send a SQL batch that directly calls sp_OACreate and sp_OAMethod to manipulate the COM object.

For example, a single COM object that implements five distinct interfaces has only one wrapper.

The reference in the Visual Basic application points to the interop assembly, not the actual COM object.

Although you can also expose a class created with Visual Basic as a COM object for unmanaged code to use, it is not a true COM object.

Demonstrates how to use Visual Basic 6. 0 To create a COM object containing a class, and then use it as a base class in Visual Basic.

The proxy class also holds a reference to the actual native COM object it represents, in a member variable called

Two other methods also determine whether a specified object represents a COM object, but the requirements for returning

Is useful when calling a method that exposes a COM object parameter as an

Whenever your managed client calls a method on a COM object, the runtime creates a

To set up the code in your class to create a COM object

DCOM Sample: Calls COM Object in Windows NT Service from Multiple Clients

Whenever a managed client calls a method on a COM object and it needs to pass in culture-specific information, it does so using the

To build the COM object used in this walkthrough

To set up your project to generate a COM object

Returns true if the object is really a COM object,

To create a COM object using the COM class template

FIX: Subsequent attempts to activate a COM object by using the ProgID fail after an intermittent error occurs in Windows Server 2003