In my pr for imgui, I suggest defined ImWchar to ImWchar32(int32_t) for full unicode planes support. It’s for compatibility when users only need one plane (BMP) , and imgui use a 16bit array for internal buffers ( just trash the code points over BMP.
If we need handle surrogate pair for WM_CHAR (for example, emoji input from IME), we must combine two messages into one code point, and then convert into UTF-8. A half surrogate can not convert into UTF-8 correctly. It’s a common mistake for UTF-16 handling. btw, There is a WTF-8 encoding for this : https://simonsapin.github.io/wtf-8/ 发自我的 iPhone > 在 2019年5月14日，20:45，Antonio Scuri <antonio.sc...@gmail.com> 写道： > > Hi, > > Interesting. I saw that you did this: > > if (sizeof(ImWchar) == 2) > cp = 0xFFFD; > > We use the TCHAR definition which is a 16 bits value when UNICODE is > defined (the default in IUP), i.e. sizeof==2 by default. So we don't actually > need the "Surrogate" variable storage but just to replace the surrogate pair > by 0xFFFD. Is that correct? > > Best, > Scuri > > >> Em qui, 9 de mai de 2019 às 04:45, 云风 Cloud Wu <clou...@gmail.com> escreveu: >> IupGLText can't handle surrogate pairs ( >> https://en.wikipedia.org/wiki/UTF-16 ) now. >> >> In windows, a unicode above U+10000 (For example U+1F604 😀 ) will be >> separated into two WM_CHAR messages. If we got a WM_CHAR with WPARAM >> between 0xD800 to 0xDBFF , we should wait for another part of >> surrogate pair, and combine them into one unicode code point. >> >> btw, I fix the same issue for imgui . This patch ( >> https://github.com/ocornut/imgui/pull/2541/commits/fc2dff0ab602e77628a97edd983f03f6f571487a >> ) is for your reference. >> >> -- >> http://blog.codingnow.com >> >> >> _______________________________________________ >> Iup-users mailing list >> Iup-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/iup-users > _______________________________________________ > Iup-users mailing list > Iup-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/iup-users
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