For backward compatibility, LoadTypeLib will register the type library if the path is not specified in the szFile parameter. LoadTypeLib will not register the type library if the path of the type library is specified. It is recommended that RegisterTypeLib be used to register a type library.

Sample Code: (See UnRegisterTypeLib for VB.Net sample code.)

static extern int RegisterTypeLib(ITypeLib ptlib,

static extern void RegisterTypeLib(ITypeLib ptlib,

Declare Unicode Function RegisterTypeLib Lib "oleaut32.dll" (ByVal ptlib As System.Runtime.InteropServices.ComTypes.ITypeLib, ByVal szFullPath As String, ByVal szHelpDir As String) As Integer

Declare Function RegisterTypeLib Lib "oleaut32.dll" (ByVal pTLB As Object, szFullPath As Byte, szHelpFile As Byte) As Long

Sample Code: (See UnRegisterTypeLib for VB.Net sample code.)

[DllImport("oleaut32.dll", EntryPoint = "UnRegisterTypeLib", CharSet = CharSet.Auto, SetLastError = true)]

    private static extern int UnRegisterTypeLib(

Declare Unicode Function UnRegisterTypeLib Lib "oleaut32.dll" (ByRef LibID As System.Guid, ByVal nVerMajor As Short, ByVal nVerMinor As Short, ByVal lCID As Integer, ByVal tSysKind As System.Runtime.InteropServices.ComTypes.SYSKIND) As Integer

Declare Function UnRegisterTypeLib Lib "oleaut32.dll" (LibID As tGUID, ByVal nVerMajor As Integer, ByVal nVerMinor As Integer, ByVal lCID As Long, ByVal tSysKind As eSYSKIND) As Long

    Private Declare Unicode Function RegisterTypeLib Lib "oleaut32.dll" (ByVal ptlib As ComTypes.ITypeLib2, ByVal szFullPath As String, ByVal szHelpDir As String) As Integer

    Private Declare Unicode Function UnRegisterTypeLib Lib "oleaut32.dll" (ByRef LibID As System.Guid, ByVal nVerMajor As Short, ByVal nVerMinor As Short, ByVal lCID As Integer, ByVal tSysKind As ComTypes.SYSKIND) As Integer

                    nResult = RegisterTypeLib(TLB, strFile, Nothing)

                    nResult = UnRegisterTypeLib(tlbAttr.guid, tlbAttr.wMajorVerNum, tlbAttr.wMinorVerNum, tlbAttr.lcid, tlbAttr.syskind)