How to return an HRESULT to COM caller?

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Ying-Shen - 29 Sep 2005 06:54 GMT

Hi all,
I need to implement an COM interface in C#,
there is one method whose IDL definition is
HRESULT IsServerAvailable();
which is supposed to return an hresult value to indicate the server
status.
I saw .Net tlbimp just translate it into
void IsServerAvailable();
which does not allow me to return any result,
How should I define this method ?

thanks!

Reply to this Message

Robert Jordan - 29 Sep 2005 07:56 GMT

> Hi all,
> I need to implement an COM interface in C#,
[quoted text clipped - 6 lines]
> which does not allow me to return any result,
> How should I define this method ?

Either throw a COMException with the HRESULT
or manually redefine the whole interface in C#:

...
[PreserveSig]
uint IsServerAvailable();
...

Rob

Reply to this Message

Ying-Shen - 29 Sep 2005 08:04 GMT

Thanks Robert, I'll try that.

>> Hi all,
>> I need to implement an COM interface in C#,
[quoted text clipped - 16 lines]
>
> Rob

Reply to this Message

Rate this thread:

Free Magazines

Get these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...