No package gtk4 found

[erwinschrodinger1]

Issue Encountered during GTK4 Installation on Windows

I followed the recommended installation guide from the book GTK4 Installation Guide for Windows, but I encountered the following error:

Package gtk4 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gtk4.pc'
to the PKG_CONFIG_PATH environment variable
No package 'gtk4' found

The reason behind this error is that the guide does not include instructions to add the PKG_CONFIG_PATH environment variable. To resolve this issue, you should add a new environment variable with the following details:

Variable Name: PKG_CONFIG_PATH
Variable Value: C:\gtk-build\gtk\x64\release\lib\pkgconfig

Here is an image highlighting the error in the code: