ITypeLib::GetTypeInfo

Article
06/30/2006

This method retrieves the specified type description in the library.

HRESULT GetTypeInfo( 
  unsigned int index, 
  ITypeInfo FAR* FAR* ppTInfo 
);

Parameters

index
[in] Index of the ITypeInfo interface to be returned.
ppTInfo
[out] If successful, returns a pointer to the pointer to the ITypeInfo interface.

Return Values

The following table shows the return values for this function.

Value	Description
S_OK	Success.
TYPE_E_ELEMENTNOTFOUND	The index parameter is outside the range of 0 to ITypeLib::GetTypeInfoCount –1.
E_OUTOFMEMORY	Out of memory.
E_INVALIDARG	One or more of the parameters is invalid.
TYPE_E_IOERROR	The function could not read from the file.
TYPE_E_INVDATAREAD	Invalid data.
TYPE_E_UNSUPFORMAT	The type library has an older format.
TYPE_E_REGISTRYACCESS	There was an error accessing the system registration database.
TYPE_E_INVALIDSTATE	The type library could not be opened.

Remarks

For dual interfaces, ITypeLib::GetTypeInfo returns only the TKIND_DISPATCH type information. To get the TKIND_INTERFACE type information, ITypeInfo::GetRefTypeOfImplType can be called on the TKIND_DISPATCH type information, passing an index of –1. Then, the returned type information handle can be passed to ITypeInfo::GetRefTypeInfo.

Example

The following code example gets the TKIND_INTERFACE type information for a dual interface.

ptlib->GetTypeInfo((unsigned int) dwIndex, &ptypeinfoDisp);
ptypeinfoDisp->GetRefTypeOfImplType(-1, &phreftype);
ptypeinfoDisp->GetRefTypeInfo(phreftype, &ptypeinfoInt);

Requirements

OS Versions: Windows CE 2.0 and later.
Header: Oaidl.h, Oaidl.idl.
Link Library: Oleaut32.lib, Uuid.lib.

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