LoadRegTypeLib

This function uses registry information to load a type library.

At a Glance

Header file:	Oleauto.h
Windows CE versions:	2.0 and later

Syntax

HRESULT LoadRegTypeLib( REFGUID rguid, unsigned short wVerMajor, unsigned short wVerMinor, LCID lcid, ITypeLib FAR * FAR * pptlib);

Parameters

rguid

Globally unique identifier (GUID) of the library being loaded.

wVerMajor

Major version number of the library being loaded.

wVerMinor

Minor version number of the library being loaded.

lcid

National language code of the library being loaded.

pptlib

On return, pointer to a pointer to the loaded type library.

Return Values

One of the values obtained from the returned HRESULT and described in the following table is returned.

Value	Description
S_OK	Success.
E_OUTOFMEMORY	Out of memory.
E_INVALIDARG	One or more of the arguments is invalid.
TYPE_E_IOERROR	The function could not read from the file.
TYPE_E_INVALIDSTATE	The type library could not be opened.
TYPE_E_INVDATAREAD	The function could not read from the file.
TYPE_E_UNSUPFORMAT	The type library has an older format.
TYPE_E_UNKNOWNLCID	The passed in LCID could not be found in the OLE-supported DLLs.
TYPE_E_CANTLOADLIBRARY	The type library or DLL could not be loaded.
Other return codes	All FACILITY_STORAGE and system registry errors can also be returned.

Remarks

Only typelib2 type library is supported and loadable from resource.

The function LoadRegTypeLib defers to LoadTypeLib to load the file.

LoadRegTypeLib compares the requested version numbers against those found in the system registry, and takes one of the following actions:

If one of the registered libraries exactly matches both the requested major and minor version numbers, then that type library is loaded.
If one or more registered type libraries exactly match the requested major version number, and has a greater minor version number than that requested, the one with the greatest minor version number is loaded.
If none of the registered type libraries exactly match the requested major version number (or if none of those that do exactly match the major version number also have a minor version number greater than or equal to the requested minor version number), then LoadRegTypeLib returns an error.

Passing into this function any invalid and, under some circumstances, NULL pointers will result in unexpected termination of the application.