If you create a GUI library, I hope it supports displaying unicode characters and unicode inputs so that I can use Japanese on the GUI.
If you create a GUI library from native GUI or wrapping popular GUI library, they would already support unicode character inputs and displaying. But even if you use nice library to render unicode characters, you might encounter following problem: * <https://heistak.github.io/your-code-displays-japanese-wrong/> In case creating a GUI lib from low level APIs, [pixie](https://github.com/treeform/pixie) can be used to load TTF/OTF/SVG and render unicode characters. For supporting CJK text input, GUI lib needs to support IME(Input Method Editor) provided by OS or window system. Here is how SDL and GLFW supports IME: * <https://wiki.libsdl.org/SDL2/Tutorials-TextInput> * <https://github.com/glfw/glfw/pull/2130>
