Do Transactions block out external variables

[AncientOne]

Is there anyway to pass a variable from a Revit macro to an add-in.

Basically I have a "document opened" event handler in my add-in transaction which I want to pick up a user determined "keyword" variable.

The only way I can think of allowing this is for the user to edit the "keyword" in the macro code. Then the add-in picks this up when a document is "opened".

But I think the add-in transaction is blocking access to the external variable. Emphasis on the think here.

Any ideas would be much appreciated.

[arnostlobel · Accepted solution]

Hello AncientOne,

I am afraid you'll need to elaborate a little more on your case, for the description you've provided so far is a bit cloudy to me. First of all, there is not "Document Opened" event in a "Transaction," at least as far as Revit "Transaction" goes. Also, Revit Transactions do not have anything to do with any "variables" in users' applications; therefore there is no "blocking" of access to variables.

As for "sharing" of variables between your external application and macros, I am afraid there is no direct sharing, for macros are executed in a different assembly. However, there is plenty of ways of sharing available in the Windows API (and .NET). For example, you could use a memory mapped files. However, such techniques go way beyond typical Revit programming.

Cheers