www.kvraudio.com/news/steinberg_vstgui_goes_open_source_1194
Steinberg VSTGUI goes open source
4th September 2003
Steinberg recently open sourced their VSTGUI cross-platform C++ library for developing GUI based VST-Plugins, and it is now hosted at SourceForge.
KVR Audio, Inc.
www.kvraudio.com