My latest (higher version) GTK is installed at the below path:
F:\Program Files\Common Files\GTK\2.0\bin
(default GTK copied files here)
When I tried to run "gqview-win-18.104.22.168.exe", it fails to and says the GTK files doesnt exist in current directory (idiotic thing), it should find where the GTK has installed.
It says, libgdk-win32-2.0-0.dll, is not found, etc. etc.