PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
int baseline = pango_layout_iter_get_baseline(iter);
pango_layout_iter_free(iter);
*descent = h - PANGO_PIXELS(baseline);
PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
int baseline = pango_layout_iter_get_baseline(iter);
pango_layout_iter_free(iter);
*descent = h - PANGO_PIXELS(baseline);