[News.eclipse.technology.gmf] "Help" - How to change the color of a shap

[senthil.periasamy@xxxxxxxxxxxxxxxxxxxxxxx (Senthil)]

Hi , 
      I have gone through the "Diagram Services Layer - How-to-guide"  
for GMF and in that guide there are sample code related to 

1.How to open multiple read-only views on a diagram.
2.How to change the color of a shape dynamically.

i have tried used the code and failed in that 

Following are the steps which i have done

1.I have gone through the cheat sheet  help and created the mind map gmf 
example 

2.I have created a mind map gmf diagram 

3.I am able to drag and drop the palatte elements  now i wanted to change 
the 
color of the shape.

4. Inside my "org.eclipse.gmf.examples.mindmap.diagram" plugin project i 
have 
updated plugin.xml with the following lines 
<extension
 id="TraceEditPolicyProvider"
name="TraceEditPolicyProvider"
point="org.eclipse.gmf.runtime.diagram.ui.editpolicyProviders">
<editpolicyProvider
class="org.eclipse.gmf.examples.mindmap.diagram.edit.policies.TraceDiagramEditPolicyProvider">
<Priority
name="Low">
</Priority>
<object
class="org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart"
id="TraceEditPart">
<method name="getViewer()">
                <value 
class="org.eclipse.gmf.examples.mindmap.diagram.edit.policies.TraceDiagramGraphicalViewer"/>
</method> 
</object>
<context
editparts="TraceEditPart">
</context>
</editpolicyProvider>
</extension>

5.Inside the "org.eclipse.gmf.examples.mindmap.diagram" plugin project and 
under the package "org.eclipse.gmf.examples.mindmap.diagram.edit.policies" 
i have included the a class TraceDiagramEditPolicy which  extends fronm 
the GraphicalEditPolicy the code which i copied from the guide.

6.Now i tried to run mindmap sample and then noticed the color of shape is 
not getting changed

Please let me know how to use the sample codes given in  the help guide for
1.How to open multiple read-only views on a diagram.
2.How to change the color of a shape dynamically.


Regards
Senthil