CoRegisterMessageFilter
Registers with OLE the instance of an EXE application's
IMessageFilter interface, which is to be used for handling concurrency issues. DLL object
applications cannot register a message filter.
HRESULT CoRegisterMessageFilter(
LPMESSAGEFILTER lpMessageFilter,
| //IMessageFilter interface supplied by app
|
LPMESSAGEFILTER * lplpMessageFilter
| //Prior IMessageFilter instance if non-NULL
|
);
|
|
Parameters
lpMessageFilter
Points to an
IMessageFilter interface supplied by the application. Can be NULL, indicating that the
current
IMessageFilter registration should be revoked.
lplpMessageFilter
If this parameter is non-NULL, returns a pointer to the previously registered
IMessageFilter instance. If NULL, indicates no previous
IMessageFilter instance was registered.
Return Values
S_OK
Indicates the
IMessageFilter instance registered or revoked successfully.
S_FALSE
Indicates an error registering or revoking
IMessageFilter instance.
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