X,Y coordinates of a page item in indesign cs3

Hi,

     I need to get the X,Y coordinates of a selected page item based on left-top of the frame. I tried all possible methods to find X,Y coordinates of a page item. But calculated coordinates is warrying from indesign UI displayed X,Y coordinates.

My code snippet is below:

InterfacePtr<ITransform> transform(node, IID_ITRANSFORM);

PMMatrix inner2parent =transform->GetInnerToParentMatrix();

PBPMRect bBox =pGeometry->GetStrokeBoundingBox(inner2parent);

The itemRef is my selected rectangle frame reference.

Anything wrong in my code please give a solution immediately. I need a exact X,Y coordinates like indesign Ui displayed.

Thanks

K.Saravanan