COM Functions (Windows Embedded CE 6.0)

1/6/2010

The following table shows the COM functions with a description of the purpose of each.

Programming element	Description
BindMoniker	This function locates an object by means of its moniker, activates the object if it is inactive, and retrieves a pointer to the specified interface on that object.
CLSIDFromProgID	This function looks up a class identifier in the registry, given a programmatic identifier.
CLSIDFromString	This function converts a string generated by the StringFromCLSID function back into the original class identifier.
CoAddRefServerProcess	This function increments a global per-process reference count.
CoBuildVersion	This function is obsolete.
CoCopyProxy	This function makes a private copy of the specified proxy.
CoCreateGuid	This function creates a GUID, a unique 128-bit integer used for CLSIDs and interface identifiers.
CoCreateInstance	This function creates on the local system a single uninitialized object of the class associated with a specified class identifier.
CoCreateInstanceEx	The function creates an instance of a specific class on a specific machine.
CoDisconnectObject	This function disconnects all remote process connections being maintained on behalf of all the interface pointers that point to a specified object
CoFileTimeNow	This function returns the current time as a FILETIME structure.
CoFreeAllLibraries	This function frees all the DLLs that have been loaded with the CoLoadLibrary function (called internally by CoGetClassObject), regardless of whether they are currently in use.
CoFreeLibrary	This function frees a library that, when loaded, was specified to be freed explicitly.
CoFreeUnusedLibraries	This function unloads any DLLs that are no longer in use and that, when loaded, were specified to be freed automatically.
CoGetCallContext	This function retrieves the context of the current call on the current thread.
CoGetClassObject	This function provides a pointer to an interface on a class object associated with a specified class identifier.
CoGetCurrentProcess	This function returns a value that is unique to the current thread.
CoGetInstanceFromFile	This function creates a new object and initializes it from a file using IPersistFile::Load.
CoGetInstanceFromIStorage	This function creates a new object and initializes it from a storage object through an internal call to IPersistStorage::Load.
CoGetInterfaceAndReleaseStream	This function unmarshals a buffer containing an interface pointer and releases the stream when an interface pointer has been marshaled from another thread to the calling thread.
CoGetMarshalSizeMax	This function returns an upper bound on the number of bytes needed to marshal the specified interface pointer to the specified object.
CoGetPSClsid	This function returns the CLSID of the DLL that implements the proxy and stub for the specified interface.
CoGetStandardMarshal	This function creates a default, or standard, marshaling object in either the client process or the server process, depending on the caller, and returns a pointer to that object's IMarshal implementation.
CoInitialize	This function initializes the COM library on the current thread and identifies the concurrency model as single-thread apartment (STA).
CoInitializeEx	This function initializes the Component Object Model (COM) for use by the current thread. Applications are required to use CoInitializeEx before they make any other COM library calls except for memory allocation functions.
CoInitializeSecurity	This function registers security and sets the default security values for the process.
CoLoadLibrary	This function is called internally by the CoGetClassObject, when the class context indicates a DLL, to load a specific DLL into the caller's process.
CoLockObjectExternal	This function is called either to lock an object to ensure that it stays in memory, or to release such a lock.
CoMarshalHresult	This function marshals an HRESULT to the specified stream, from which it can be unmarshaled using the CoUnmarshalHresult function.
CoMarshalInterface	This function writes into a stream the data required to initialize a proxy object in some client process.
CoMarshalInterThreadInterfaceInStream	This function marshals an interface pointer from one thread to another thread in the same process.
CoQueryAuthenticationServices	This function retrieves a list of the authentication services registered when the process called CoInitializeSecurity.
CoQueryClientBlanket	This function is called by the server to find out about the client that invoked the method executing on the current thread.
CoQueryProxyBlanket	This function retrieves the authentication information the client uses to make calls on the specified proxy.
CoRegisterClassObject	This function registers an EXE class object with OLE so other applications can connect to it.
CoRegisterMallocSpy	This function registers an implementation of the IMallocSpy interface in OLE, thereafter requiring OLE to call its wrapper methods around every call to the corresponding IMalloc method.
CoRegisterPSClsid	This function enables a downloaded DLL to register its custom interfaces within its running process so that the marshaling code will be able to marshal those interfaces.
CoRegisterSurrogate	This function registers the surrogate process through its ISurrogate interface pointer.
CoReleaseMarshalData	This function destroys a previously marshaled data packet.
CoReleaseServerProcess	This function decrements the global per-process reference count.
CoResumeClassObjects	This function is called by a server that can register multiple class objects to inform the OLE SCM about all registered classes, and permits activation requests for those class objects.
CoRevertToSelf	This function restores the authentication information on a thread of execution.
CoRevokeClassObject	This function informs OLE that a class object, previously registered with the CoRegisterClassObject function, is no longer available for use.
CoRevokeMallocSpy	This function revokes a registered IMallocSpy object.
CoSetProxyBlanket	This function sets the authentication information that will be used to make calls on the specified proxy.
CoSuspendClassObjects	This function prevents any new activation requests from the SCM on all class objects registered within the process.
CoSwitchCallContext	This function switches the call context object used by CoGetCallContext.
CoTaskMemAlloc	This function allocates a block of task memory.
CoTaskMemFree	This function frees a block of task memory previously allocated through a call to the CoTaskMemAlloc or CoTaskMemRealloc function.
CoTaskMemRealloc	This function changes the size of a previously allocated block of task memory.
CoTreatAsClass	This function establishes or removes an emulation, in which objects of one class are treated as objects of a different class.
CoUninitialize	This function closes the OLE Component Object Model (COM) library, freeing any resources that it maintains.
CoUnmarshalHresult	This function unmarshals an HRESULT type from the specified stream.
CoUnmarshalInterface	This function initializes a newly created proxy using data written into the stream by a previous call to the CoMarshalInterface function, and returns an interface pointer to that proxy.
CreateAntiMoniker	This function creates and supplies a new anti-moniker.
CreateBindCtx	This function supplies a pointer to an implementation of IBindCtx, an object that stores information about a particular moniker-binding operation.
CreateClassMoniker	This function creates a class moniker that refers to the given class.
CreateFileMoniker	This function creates a file moniker based on the specified path.
CreateGenericComposite	This function performs a generic composition of two monikers and supplies a pointer to the resulting composite moniker.
CreateItemMoniker	This function creates an item moniker that identifies an object within a containing object (typically a compound document).
CreatePointerMoniker	This function creates a pointer moniker based on a pointer to an object.
DllCanUnloadNow	This function determines whether the dynamic-link library (DLL) that implements this function is in use.
DllGetClassObject	This function retrieves the class object from a DLL object handler or object application.
DllRegisterServer	This function instructs an in-process server to create its registry entries for all classes supported in this server module.
DllUnregisterServer	This function instructs an in-process server to remove only those entries created through DllRegisterServer.
GetClassFile	This function supplies the class identifier associated with the specified file name.
GetRunningObjectTable	Supplies a pointer to the IRunningObjectTable interface on the local Running Object Table (ROT).
IIDFromString	This function converts a string generated by the StringFromIID function back into the original interface identifier (IID).
IsEqualGUID	This function determines whether two GUIDs are equal.
IsValidIid	This function is obsolete.
IsValidInterface	This function is obsolete.
IsValidPtrIn	This function is obsolete.
IsValidPtrOut	This function is obsolete.
MkParseDisplayName	This function converts a string into a moniker that identifies the object named by the string.
MonikerCommonPrefixWith	This function creates a new moniker based on the common prefix that this moniker (the one comprising the data of this moniker object) shares with another moniker.
MonikerRelativePathTo	This function provides a moniker that, when composed onto the end of the first specified moniker (or one with a similar structure), yields the second specified moniker.
ProgIDFromCLSID	This function retrieves the ProgID for a given CLSID.
StringFromCLSID	This function converts a class identifier into a string of printable characters.
StringFromGUID2	This function converts a globally unique identifier (GUID) into a string of printable characters.
StringFromIID	This function converts an interface identifier into a string of printable characters.
UpdateDCOMSettings	This function updates the DCOM configuration after modifying the registry settings.

Programming element	Description
CoCreateFreeThreadedMarshaler	This function creates an aggregatable object capable of context-dependent marshaling.
CoGetMalloc	This function retrieves a pointer to the default OLE task memory allocator (which supports the system implementation of the IMalloc interface) so applications can call its methods to manage memory.
CoGetObject	This function converts a display name into a moniker that identifies the object named, and then binds to the object identified by the moniker.
CoGetTreatAsClass	This function returns the CLSID of an object that can emulate the specified object.
CoImpersonateClient	This function allows the server to impersonate the client of the current call for the duration of the call.
CoIsHandlerConnected	This function determines whether a remote object is connected to the corresponding in-process object.
CoIsOle1Class	This function determines if a given CLSID represents an OLE 1 object.
CoRegisterMessageFilter	This function registers with OLE the instance of an EXE application's IMessageFilter interface, which is to be used for handling concurrency issues.
DirectInputCreate	This function is no longer supported as of Windows CE .NET 4.2.

See Also

Reference

COM Reference