This value corresponds to the font 高さ in Western scripts,
but is 独立した・無所属 of the 令状ing direction (see
FontRequest::IsVertical below). That
means, the value 明示するd here is always 手段d orthogonal
to the text 進歩 (高さ for 水平の 令状ing, and
width for vertical 令状ing).
When this value is 消極的な, its 絶対の value is taken as
the character size of the font. If this value is 肯定的な,
it's taken as the 独房 size of the font.
This member and the referenceAdvancement member are 相互に
排除的, one of them has to be 始める，決める to 0 (which means don't
care).
For distorted fonts, the （判決などを）下す 変形 must be
used. That is, the size 明示するd here corresponds to 装置
pixel only if the 連合させるd （判決などを）下す 変形 during text
生産（高） equals the 身元 transform. This also 適用するs to all
query methods, for both XCanvasFont and
XTextLayout.
This value 明示するs the size of the font in the 令状ing
direction (i.e. width for 水平の 令状ing, and 高さ for
vertical 令状ing).
It is 同等（の） to the referenceCharSize of the FontMetrics
structure.
This member and the cellSize member are 相互に 排除的,
one of them has to be 始める，決める to 0 (which means don't care). For
distorted fonts, the font matrix must be used.
This member 補足（する）s the
FontInfo::UnicodeRange0 入ること／参加（者） with a 明確な／細部
地元の; this is e.g. important when selecting between
伝統的な and 簡単にするd chinese is necessary (since the
letters have the same unicode 範囲s and character values).
