can't use correctly in my environment

[yufeiran]

Good job！
I want add a ui in my 3D Rasterization Render which based on gdi. And I try to use imgui.
I'm just using the imgui first time, I don't know how to solve this problem.
My environment：Windows11 + VS2022
when I directly clone and compile，it reports some error：
can‘t find “imstb_rectpack.h” and "imstb_truetype.h"

Then I download the v1.79 of imgui ( README.txt seem to say the version is 1.79),put imstb_rectpack.h and imstb_truetype.h in the root of this project.It can run now,but all the words seem to become white block：

I also try to put the imgui using font file in this project，it don't work. Hope to get a reply,thank!