Retrieves a collection of bounding rectangles for each fully or partially visible line of text in a text range.
HRESULT GetBoundingRectangles( SAFEARRAY *boundingRects[double] );
[out, retval] The address of a SAFEARRAY that receives a pointer to an array of bounding rectangles for each fully or partially visible line of text in a text range. An empty array is returned for a degenerate (empty) text range or for a text range that is completely off-screen, scrolled out of view, or obscured by an overlapping window.
Returns S_OK if successful, or an error value otherwise.
For information about how the bounding rectangles are stored in the SAFEARRAY, see Working with Safe Arrays.