Hi,

I've created my first DSL which can accept DSRef items from the server explorer.
To implement I followed some samples which are already described on the forum. In an overriden OnAssociated I bind the DragOver and DragDrop events and check for a CF_DSREF type. This is all working OK and I'm creating business objects, attributes and relations fromt the database metadata.

My issue is that I managed to change something in the DSL which prevents business objects being dropped from the toolbox onto the diagram. So I'm looking for leads on which properties control this behaviour and where in the underlying DSL tools framework sources I can debug to get more knowledge of how this is implemented.

Grtz, Harry

OK, this probably has something to do with connection builders.

I have the following model:

NamedElement base domain class

ModelRoot root domain class which has an embedded relationship to named element

Descendants of named element are BusinessObject, Attribute and Operation.

Two questions:

1. If I drop a business object it is accepted however the model root is NULL so it's not created.
I created a connection builder for the ModelRootHasNamedElements relation from ModelRoot to BusinessObject

2. I only want to accept business objects to be droppable on the diagram. Attributes and operations must be only droppable on business objects.

Tx for your replies!

Grtz, Harry

Yep, figured it out.

The element merge directive from ModelRoot to BusinessObject wasn't correctly setup. In my case the modelroot only needs an EMD to businessobject and not to attribute and operation...

Grtz, Harry