GetDeclaredTypeIid

Returns the COM interface IID associated with a declared type, resolved at compile time.

Syntax: GetDeclaredTypeIid(Of T )() As String

T

required The type to query for. Typically an interface declared with the InterfaceId attribute or imported from a type library.

The IID is returned in registry format ({xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}). The lookup happens at compile time and the result is baked into the generated code as a string literal — there is no run-time call.

Useful when calling vbaCastObj or any API that takes an interface IID as a string.

Example

Dim Iid As String = GetDeclaredTypeIid(Of stdole.IPicture)()
Dim AsPic As IUnknown = vbaCastObj(SomeObj, Iid)

See Also

• GetDeclaredTypeProgId function
• GetDeclaredTypeClsid function
• GetDeclaredTypeEventIid function
• vbaCastObj function