How to zoom, move cursor programatically and get pixel value in 3D mesh graph

[AndrazS]

I want to :

 - zoom 3D Mesh Graph in X-Y view.

- move cursor programatically so that when user moves mouse on the graph, the cursor moves with mouse and displays value of Z value at cursor.

I cannot find the "Graph Tools" on the 3D Mesh Graph. On normal intensity graph there it is!

[guserwin91]

For zooming in 3D Mesh graph, 

Holding Shift and mouse left button then move the mouse up for zoom in and down for zoom out.

Get Z value programmatically by using mouse cursor

I m thinking of using Event Structure but it seems a bit tricky to do this.

[guserwin91]

You could try to access the property node while moving inside the 3D mesh graph to get the Z value. 

[AndrazS]

Holding Shift and mouse left only works when the view of graph is in 3D mode and it is not working in X-Y mode. 

Cannot figure out how to od this by using mouse cursor. Can you attach vi?