Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Revision history [back]

Not sure if this is the problem, but usually my callbacks take a ConstPtr type, e.g.,

void imageCallback (const sensor_msgs::ImageConstPtr& img)

Also the callable can be a functor or function pointer.

Maybe for these reasons type deduction isn't possible in general.

ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.