This:
... track the cursor over certain handles...
and
Where 'uicontrol' is the name of the axes that should be tracked (like handles.axes1)
is not getting clear to me.
Perhaps you are looking for:
set(hObject, 'WindowButtonMotionFcn', {@trackCursor, handles.axes1});
...
And the separate function:
function trackCursor(hObj, EventData, Axes1)
handles = guidata(hObj);
P = get(Axes1, 'CurrentPoint');
handles.x = P(1, 1);
handles.y = P(1, 2);
guidata(hObj, handles);
But this contains some guessing of want you might need.
