MS Win32 GDI C API. GNU GCC & GNU Makefile for Windows also. VSCode files for Task (compile with Make) and Debug (GDB debugger in VSCode, e.g. breakpoints are considered).

Example code taken from this E-Book + Source Codes by Jan Bodnar. We all thank him, great effort and great results! Note that all his web-site (zetcode.com) is full of Knowledge. Again, it's a great work by a great worker! https://zetcode.com/ebooks/windowsapi/

C/C++ for Visual Studio Code:
https://marketplace.visualstudio.com/items?itemName=ms-vscode.cpptools

Make support and task provider: Extension to run Makefile tasks from VS Code
https://marketplace.visualstudio.com/items?itemName=carlos-algms.make-task-provider

• install MSYS to C:\msys64 https://www.msys2.org/#installation
• update pacman package manager pacman -Syu
• install package gcc compiler: pacman -S mingw-w64-x86_64-toolchain
• install package gdb debugger: pacman -S mingw-w64-x86_64-gdb
• install package make build: pacman -S mingw-w64-x86_64-make
• add to System \ Advanced settings \ Environment Variables \ PATH
  • C:\msys64\mingw64\bin
  • C:\msys64\usr\bin