Sketchup 21.0.0 〈LIMITED — 2026〉

SUEntitiesRef entities = SU_INVALID; SUModelGetEntities(model, &entities);

int main() SUInitialize(); print_selection_count(); SUTerminate(); return 0; sketchup 21.0.0

# Extrude selected face by a distance (along normal) module MyTools class ExtrudeByDistance def self.extrude(face, distance) return unless face.is_a?(Sketchup::Face) SUEntitiesRef entities = SU_INVALID

Load in SketchUp: Extensions > Ruby Console > File > Open or paste code. This requires the SDK. A minimal main.cpp for a command that prints selection count: int main() SUInitialize()