fix width font is not correct in QC editor

[QtTester]

I have tried Console and Ubuntu Mono Space, all of them are not correct shown in the QtCreator 6.0.2 editor with Chinese language, but all are correct shown in NotePad or NotePad++:
Is there a font to show correct?
Thanks.

[ChrisW67]

The Consolas font does not include Chinese characters. On my Ubuntu machine "Ubuntu Mono Space" matches "Noto Sans Regular"which also does not appear to cover Chinese (simplified or traditional).

The Chinese glyphs are coming from some other font that, presumably, is pushing subsequent text out of alignment in Qt Creator. Could be a buggy font (e.g. ambiguous metrics), a different font substitution in Windows/Notepad++, or buggy Qt font handling.

Any idea what font that might be?

[QtTester]

@ChrisW67 Ubuntu Mono space/Consolas support Chinese in Notepad,Notepad++,Vs code, also Vs studio.
I would assume Qt does not handling the font correctly on Windows.

[ChrisW67]

Ok, so you are using this Google font called "Ubuntu Mono" on Windows (No connection to Ubuntu Linux). You will see that this does not contain Chinese language (glyph) support. Windows is substituting glyphs from a different font, possibly SimSun or MingLiU.

Qt uses Harfbuzz to do font work, so that rendering path is probably different to all your other examples even if the same font is selected.

[QtTester]

@ChrisW67
I change font to '仿宋' , it seems everything is allright now. Hopes Qt make more compatiblity like Vs Code.