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How do i publish in a callback function?

asked 2016-01-20 13:24:28 -0500

Gren8
11 ●4 ●4 ●5

Good evening,

my problem is that i want to subscribe and publish in the same node. I need to publish in a callback function but the nodehandle is initialized in the main(). How can i publish a messages in callback function? Is it possible to use a pointer to a publisher? If yes how could i do that?

Please help!

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