Brew MP 1.0.2
This function will find the location of a particular widget, returning that
widget's rectangle relative to the root container. The function will also,
optionally, return a pointer to the root container (which will actually be
the same pointer passed into the function in the 'pif' parameter).
[in] Pointer to the IRootContainer interface object that serves
as the parent to the widget to locate.
[in] Pointer to the IWidget object to be located.
[in/out] Pointer to an IContainer pointer, into which the function
will return a pointer to the container's root container.
This parameter may be specified as NULL if the caller does not
wish to get the root container.
[in/out] Pointer to an AEERect. On input, this rectangle will specify
the current relative offset of the 'pw' object relative to its
child. On output, this rectangle specifies the layout position
of the object relative to the root container. Therefore, the
function should initially be called by passing in a rectangle
with origin at (0, 0) -- otherwise, the returned rectangle will
be expressed relative to the initial offset.