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关于

NodeData based classic plugin classes can implement NodeData::CopyTo() . This is usually only needed if internal data is not stored in the element's BaseContainer . If implemented, this function is called when Cinema 4D copies the element. Implementing this function is also needed to correctly support the undo system.

注意

若 NodeData::CopyTo() is implemented typically also NodeData::Read() and NodeData::Write() should be implemented.

NodeData::CopyTo() corresponds to C4DAtom::CopyTo() .

用法

NodeData::CopyTo() is called when Cinema 4D copies the element. This can happen for various reasons and multiple times.

Bool CopyTo( NodeData * dest, GeListNode * snode, GeListNode * dnode, COPYFLAGS flags, AliasTrans * trn) { ExampleGenerator* const destObject = static_cast< ExampleGenerator* > (dest); if (destObject == nullptr ) return false ;

// copy internal data if (_branchHead) { GeListHead * destBranchHead = destObject->_branchHead; _branchHead->CopyTo(destBranchHead, flags, trn); }