ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange |
1 | initial version |
You're looking at the wrong class. http://docs.ros.org/melodic/api/hardware_interface/html/c++/classhardware__interface_1_1JointStateHandle.html
Note: JointStateHandle and JointState are different. JointState derives from the JointStateHandle base class, which as that constructor.