Hallo all,

I am trying to work with gui in ros(in cpp), i have two questions regarding it

1. As mentioned in ros rqt plugin tutorials:

   • created package, edited cmakelist.txt, package.xml, plugin.xml
   • as mentioned in the tutorial should uncomment catkin_python_setup() what if for cpp?

   • I tried to do catkin_make then it shows:

     Invalid package manifest "/home/george/catkin_new/src/rqt_mypkg/package.xml": The manifest must not contain more than one "export" tags
     
     george@george-ThinkPad-T440s:~/catkin_new$ cmake
     cmake version 2.8.12.2
     

2. Writing a ros node in src, and doing to make catkin_make, I had an example which is publishing some std_msg: Please have a look, here my doubt is without any .ui file or process that happens in qt how it opens a window?