Doc/QIconEngine: fix comment about virtual_hook()
QIconEngine::scaledPixmap() and isNull() are now virtual functions which can be reimplemented by the icon engines so the comment was out of date. Change-Id: I308446dade1da9edeef5c554db146443660b4761 Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io> (cherry picked from commit 3987e938b1004329c6614adcf3c3d2777b8b1cea) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
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\note This is a helper method and the actual work is done by the
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\note If the icon engine does not reimplement this function, the actual work is
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virtual_hook() method, hence this method depends on icon engine support
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done by the virtual_hook() method, hence this method depends on icon engine support
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and may not work with all icon engines.
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and may not work with all icon engines.
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