How to combine a set of shapes into one shape

Hello guys, I want to export a Model to a STEP file. The model is consisted of several TopoDS_Shapes. How can I combine these shapes into one shape so that the STEP file opened as one model, not as many pieces?
Waiting for your answer...

Ma Yan's picture


dingguozi's picture

Thanks for your answer, I've tried to Add all shapes to a TopoDS_Compund, then exported the Compound to STEP file. When openning the STEP file in Solidworks, there is still many parts. Moving any part, it will separate from the model.