Effective rect of stacks on Windows 10

[Trevor DeVore]

I am looking for input from people who are using `the effective rect of
stack` and the values it reports on Windows. I have some code that uses the
effective rect of a group to determine if the stack is still on the screen
after the user moves the stack or when restoring window positions when an
app relaunches.

On Windows 10 I just noticed that `the effective rect of stack` includes
the drop shadow that appears along the left, bottom, and right of a window
on Windows 10. For my use case including the shadows in the `effective rect
of stack` serves no value. I'm wondering if someone has a use case where it
is helpful to have the drop shadow included in `the effective rect`?

Here is how you can check behavior if you are interested:

EXPECTED RESULT: The effective rect of a stack on Windows would return the
rect of the stack that includes stack borders and title bar.

OBSERVED RESULT: The effective rect includes the drop shadow of the window
in the rect.

RECIPE:
1. Create a new stack
2. Set the topleft of the stack to 0,0
3. `put the effective rect of this stack`. The left of the rect will be a
negative value.
4. `set the effective topleft of this stack to 0,0`. The left of the stack
will be offset by the negative value from (3).

-- 
Trevor DeVore
ScreenSteps
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