> On 4 Jan 2022, at 01:33, John Weeks <j...@wavemetrics.com> wrote: >> On Jan 3, 2022, at 2:31 PM, Joshua Grauman <jnf...@grauman.com> wrote: >> >> Hi all, >> >> I am working on using QTextLayout and I was wondering if someone could give >> me a quick explanation for what preedit text / preedit area was in this >> context? There's not much detail in the docs, reading the Qt code and >> googling hasn't helped me much. >> >> When/why would you use setPreeditArea(int pos, QString text) vs >> setText(QString). What's a preedit area? >> >> Thanks in advance, >> >> Josh >> _______________________________________________ >> Interest mailing list >> Interest@qt-project.org >> https://lists.qt-project.org/listinfo/interest > > Maybe something related to an input method? Input methods are used for things > like composing Japanese characters. > > -John Weeks >
Yes, the preedit-area is the area in which text input widgets display the (preedit) text that is being composed, but not yet committed. E.g. with a Chinese input method, type “chang”; it will be displayed as a preedit text in the preedit area (underlined perhaps, or with a different background color), and the compositor window will open to allow you to pick one of the several glyphs that can be used (for instance, either 长 or 鬯). So, this is important for complex input methods; but the preedit area is also used for not-so-complex input such as when typing an accented character on some platforms, or for auto completion or auto correction. Volker _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
