def getScreenPosition(obj):
"""
Fetches a TextInfo instance suitable for reviewing the screen, positioned at the given object's coordinates.
@param obj: the NVDAObject to review
@type obj: L{NVDAObject}
@return: the TextInfo instance and the Scriptable object the TextInfo instance is referencing, or None on error.
@rtype: (L{TextInfo},L{ScriptableObject})
"""
focus = api.getFocusObject()
while focus and not isinstance(focus, Window):
focus = focus.parent
if not focus: return None
w = winUser.getAncestor(focus.windowHandle,
winUser.GA_ROOT) or focus.windowHandle
s = Window(windowHandle=w)
if s:
s.redraw()
try:
pos = DisplayModelTextInfo(s, obj)
except LookupError:
pos = DisplayModelTextInfo(s, textInfos.POSITION_FIRST)
return pos, pos.obj
