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COM Functions (Windows CE 5.0)

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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CoBuildVersion This function is obsolete.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.
CoCreateFreeThreadedMarshaler This function creates an aggregatable object capable of context-dependent marshaling.
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.
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.
CoGetMarshalSizeMax This function returns an upper bound on the number of bytes needed to marshal the specified interface pointer to the specified object.
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.
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.
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.
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.
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.
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.
CoRegisterMessageFilter This function registers with OLE the instance of an EXE application's IMessageFilter interface, which is to be used for handling concurrency issues
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.
DirectInputCreate This function is no longer supported as of Windows CE 4.2.
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.

See Also

COM Reference

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