vb reference to COM

[smythe]

CreateObject
How do I use CreateObject in VB to instantiate a dll instead of doing it in the references. This should be simple, sorry I'm a c++ programmer.

For instance, I reference my Novar.dll in my references then use this code:


code:--------------------------------------------------------------------------------
Dim comSched As NOVAR2BCMLib.Novar
Set comSched = New NOVAR2BCMLib.Novar
--------------------------------------------------------------------------------

and everything works great. How can I accomplish the same thing without using a reference. I tried to to this:

code:--------------------------------------------------------------------------------
Dim comSched As Object
Set comSched = CreateObject("Novar2BCMLib.Novar&quot
--------------------------------------------------------------------------------


This does not work and complains

quote:
--------------------------------------------------------------------------------

Runtime error '429':
ActiveX component can't create object

--------------------------------------------------------------------------------



Also on a side note, NOVAR2BCM is a visual c++ COM/ATL component in case this is relevant.

 

[chiph]

The argument to CreateObject is the ProgID of your COM object, if that helps. The usual things apply: make sure your COM object is registered, etc.

Chip H.


If you want to get the best response to a question, please check out FAQ222-2244 first

 

[smythe]

Thanks, got it working. The COM object was registered properly, but I was simply using the wrong name for a parameter in the CreateObject function.

It needed to be
Set comSched = CreateObject("Novar2BCM.Novar&quot

instead of
Set comSched = CreateObject("Novar2BCMLib.Novar&quot

This is confusing to me. Within my COM object I thought it said the lib name was NOVAR2BCMLib.

library NOVAR2BCMLib
{
importlib("stdole32.tlb"
importlib("stdole2.tlb"


[
uuid(4BFA500D-24D2-43EA-BC4D-8690A9BE0385),
helpstring("Novar Class&quot
]
coclass Novar
{
[default] interface INovar;
};
};

But within the registry I find it listed as Novar2BCM.Novar. Oh well, at any rate its working now.