function initializes the Component Object Model(COM) library. You must
initialize the library before you can call its functions. Applications must call CoInitialize
before they make any other COM library calls with two exceptions: the CoGetMalloc
function, and memory allocation calls.
| LPVOID pvReserved
||//Reserved, must be NULL
In 32-bit OLE, this parameter must be NULL. The 32-bit version of OLE does not
support applications replacing OLE's allocator and if the parameter is not
Indicates the library was initialized successfully.
Indicates that the library is already initialized or that it could not release
Indicates that it was unable to initialize because the system is out of memory.
Indicates the argument is invalid.
Indicates an unexpected error occurred.
You need to call this before you call any of the OLE library functions unless
you call the OleInitialize
function, which calls CoInitialize
is called only once in the process that uses the OLE library. There can be
multiple calls, but subsequent calls return S_FALSE. To close the library
gracefully, each successful call to CoInitialize
, including those that return S_FALSE, must
be balanced by a corresponding call to the CoUninitialize
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