A COM exception occurred. This exception is raised by classes generated through the IDE's Insert->ActiveX Component feature.
ErrorNumber As Integer
Used to contain an error number that describes the runtime error.
Message As String
Used to contain descriptive text to display when the runtime exception is encountered.
Used to raise your own RuntimeException with a message and optional error code.
Stack As String()
Returns a String array that contains a list of all of the methods in the stack from the main entrypoint to the point at which the exception was invoked.
The stack contains all the method names up and including the current method name.
This feature only works if the IncludeFunctionNames property on the App object is selected in the Shared Build Settings.
In addition to your own method calls, you will also see framework method calls, but these may not always be completely accurate due to insufficient symbols for the OS to resolve.
StackFrames As StackFrame()
Returns an array containing the stack when the exception was first raised.
When attempting to catch this exception in code, you must use the fully qualified name COM.COMException:
Var wordApp As New Word.Application
wordApp.Help(255) ' Non-existent help topic should throw an exception
Catch err As COM.COMException
MessageBox("That help topic does not exist.")
All project types on all supported operating systems.