• Robert Sprowson's avatar
    Change to method of window highlighting · d137f7ac
    Robert Sprowson authored
    The change made in Wimp-5_02 to Wimp-5_03 (to permit 'f' prefixed toolsprites) introduced a set of interesting boundary cases not covered by that scheme.
    This commit restores the former behaviour, while retaining its simplification of H/V scrollbar plotting (beefed up with a few ASSERTs).
    Part of fix for ticket #323.
    Tagged as Wimp-5_30-pre4.
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