How to use chinese fonts (was 中文不能显示)

[feifeid47]

没有一个简单快捷的方式来显示中文。输入的中文都是 ？？？

Translation (for other readers):
Chinese cannot be displayed: There is no simple, quick way to display Chinese. The Chinese I type all shows up as ???

Please write issues in English, it helps everyone follow along. 🙏

[pthom]

Hi @feifeid47, thanks for the report!

The ??? appears because the default bundled fonts (DroidSans, Roboto) don't contain Chinese glyphs. You just need to load a font that does. Since ImGui 1.92 there are no glyph ranges to configure: glyphs are rasterized on demand, so the only requirement is a font file that actually contains the Chinese glyphs.

Download a CJK font (e.g. Noto Sans SC or Source Han Sans, TTF or OTF), put it in your assets/fonts/ folder, and load it as the default font:

from imgui_bundle import hello_imgui, imgui, immapp

def gui():
    imgui.text("你好，世界")

def load_fonts():
    # Load the CJK font first => it becomes the default font
    hello_imgui.load_font("fonts/NotoSansSC-Regular.otf", 16.0)
    # Optional: keep FontAwesome icons
    fa = hello_imgui.FontLoadingParams()
    fa.merge_to_last_font = True
    hello_imgui.load_font("fonts/fontawesome-webfont.ttf", 16.0, fa)

params = hello_imgui.RunnerParams()
params.callbacks.show_gui = gui
params.callbacks.load_additional_fonts = load_fonts
immapp.run(params)

Let me know if this solves your issue!

[leosongwei]

works like a charm!