Raising ABAP OO events for workflow

1. Why use ABAP OO with Workflow?
2. Getting started with ABAP OO for Workflow ... using the IF_WORKFLOW interface
3. Using ABAP OO with Workflow Tasks

If you want to try the exercise in this blog in your own system, you will need an ABAP Class with the IF_WORKFLOW interface, and a system/client (SAPNetWeaver 6.20 minimum) with the workflow environment activated.

Workflow : Other Useful Links :
Org units in workflow steps?
'No Administrator found' workflow error
LIV & Payment Release workflow
Workflow performance tips
Viewing another user's workflow inbox
How can I temporarily disable a workflow in production?
Raising ABAP OO events for workflow