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ITypeLib Interface
Implemented by
| Used by
| Header filename
| OLEAUT32.DLL (32-bit systems)
TYPELIB.DLL (16-bit systems)
| Tools that need to access the descriptions of objects contained in type
libraries.
| OLEAUTO.H
DISPATCH.H
|
Data describing a set of objects is stored in a type library. A type library
may be a stand-alone binary file (.TLB), a resource in a DLL or .EXE file, or
part of a compound document file.
A type library contains descriptions of one or more objects, and is accessed
through the ITypeLib interface. The descriptions of individual objects are accessed through the ITypeInfo interface. The system registry contains a list of all the installed type
libraries. Type library organization is illustrated in the following figure:
The ITypeLib interface provides methods for accessing a library of type descriptions. This
interface supports the following:
- Generalized containment for type information. ITypeLib allows iteration over the type descriptions contained in the library.
- Global functions and data. A type library can contain descriptions of a set of
modules, each of which is the equivalent of a C or C++ source file that
exports data and functions. The type library supports compiling references to the
exported data and functions.
- General information, including a user-readable name for the library and Help
for the library as a whole.
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