从版本1.7.2升级到包含Excel5编写器中对RTF的支持的最新版本可能会有所帮助...版本1.7.2将近3岁. 1.7.7是当前的生产版本，1.7.8已经过期，但可以在github上找到.

Upgrading from release 1.7.2 to a more recent version that includes support for Rich Text in the Excel5 writer might help... version 1.7.2 is nearly 3-years old. 1.7.7 is the current production release, with 1.7.8 already overdue but available on github.

这是问题"列表上的工作"项目#8916，并且在生产版本1.7.7中添加了支持

This was Work item #8916 on the Issues list, and support was added in production release 1.7.7