This method retrieves a description or specification of an entry point for a function in a dynamic-link library (DLL).
At a Glance
| Header file: | Oaidl.h |
| Windows CE versions: | 2.0 and later |
Syntax
HRESULT GetDllEntry( MEMBERID memid, INVOKEKIND invKind,
BSTR FAR* pBstrDllName, BSTR FAR* pBstrName,
unsigned short FAR* pwOrdinal);
Parameters
memid
Identifier of the member function whose DLL entry description is to be returned.
invKind
Specifies the kind of member identified by memid. This is important for properties, because one memid can identify up to three separate functions.
pBstrDllName
If not NULL, the function sets pBstrDllName to a Unicode string that contains the name of the DLL.
pBstrName
If not NULL, the function sets lpbstrName to a Unicode string that contains the name of the entry point. If the entry point is specified by an ordinal, *lpbstrName is set to NULL.
pwOrdinal
If not NULL, and if the function is defined by an ordinal, then pwOrdinal is set to point to the ordinal.
Return Values
One of the values described in the following table is returned.
| Value | Description |
| S_OK | Success. |
| E_OUTOFMEMORY | Out of memory. |
| E_INVALIDARG | One or more of the parameters is invalid. |
| E_NOINTERFACE | OLE could not find an implementation of one or more required interfaces. |
| TYPE_E_ELEMENTNOTFOUND | The element was not found. |
| 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_INVALIDSTATE | The type library could not be opened. |
| TYPE_E_WRONGTYPEKIND | Type mismatch. |
Remarks
The caller passes in a member identifier, which represents the member function whose entry description is desired. If the function has a DLL entry point, the name of the DLL that contains the function, as well as its name or ordinal identifier, are placed in the passed-in pointers allocated by the caller. If there is no DLL entry point for the function, an error is returned.
If the type description inherits from another type description, this function is recursive to the base type description, if necessary, to find the item with the requested member identifier.
The caller should use SysFreeString to free the BSTRs referenced by pBstrName and pBstrDllName.