When I try the example-0.c on https://developer.gnome.org/gtk3/stable/gtk-getting-started.html, I can build successfully in my cmd (I have configured the PATH environment variable), but run with the errors as the snapshot below.
Also note if I didn't close the first error msgbox quickly, the second error msgbox won't shown. This is really strange.
However, I can run it (./example-0.exe) without this problem in my C:\msys32\mingw32.exe
