Note: at the time of writing, there is a bug that affects xclock when desktop effects are enabled.
注意:在撰写本文时,有一个bug在启用桌面效果时会影响xclock。
If your xclock examples don't look like the ones in this article, you may want to try switching off desktop effects for a while.
如果您的xclock例子与本文的不同,您可能要关闭桌面效果一段时间。
The demos for chapters 16-18 are absent (there are no samples for chapter 19, in case you were wondering), which is a shame as these are the ones covering the various desktop effects and transitions.
第16 - 18章的演示还空缺着(顺便提醒读者,第19章没有任何例子),这几章涵盖的是各种桌面效果和画面过渡,缺了演示真是说不过去。
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