I have some code that worked in VB6 (Arc 9.3) but is now throwing a COM error in VB.NET (Arc 10).
The code declares at the top:
Private WithEvents pApplicationStatusEvents As ESRI.ArcGIS.Framework.ApplicationStatusEvents
Then later we have:
Private Sub IExtension_Startup(ByRef initializationData As Object) _
Implements ESRI.ArcGIS.esriSystem.IExtension.Startup
Try
If (TypeOf initializationData Is ESRI.ArcGIS.Framework.IApplication) Then
m_pApp = initializationData
pApplicationStatusEvents = m_pApp
End If
...
When it executes the pApplicationStatusEvents = m_pApp line, I get the following error:
Unable to cast COM object of type 'System.__ComObject' to interface type 'ESRI.ArcGIS.Framework.ApplicationStatusEvents'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{...}' failed due to the following error: No such interface supported (Exception fro mHRESULT: 0x80004002 (E_NOINTERFACE)).
Does anyone know if this capability has gone away? I think what it was supposed to do in call the Initialize method when the applications gui was fully initialized but I could be wrong. I inherited this code and I'm not sure of all of its quirks.
