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Hi Steve, I think you can simply just use the standard cout to output what you want to display. If cout works well, then it may be just the io problem, if no, probably it is your simulation problem. Rui On Tue, Jul 26, 2016 at 3:51 AM, Steve Quillin <firstname.lastname@example.org> wrote: > > *** Discussion title: (Graphical) User Interfaces > > Hello > > I have a messenger class attached to my PrimaryGeneratorAction class and > though it seems to work, it does not display any output from G4cout. > There is no error message at compile or run time, just no output. > std::cout used instead of G4cout works as expected. I've spent ages > trying to track down errors in my code that turned out to be just a lack > of expected messages in output. (I'm trying to print a message to screen > after applying a command to PrimaryGeneratorAction from the messenger. ) > > I presume I'm either missing something or being stupid somewhere. Or is > this expected behaviour? Any advice? > > Thanks > > Steve > > ------------------------------------------------------------- > Visit this GEANT4 at hypernews.slac.stanford.edu message (to reply or > unsubscribe) at: > > http://hypernews.slac.stanford.edu/HyperNews/geant4/get/userinterface/125.html > -- Liu Ruirui Research Assistant Department of Nuclear Engineering and Radiological Health Physics (NERHP) Oregon State University 3541 SW Jefferson Way, Corvallis, OR 97330 Tel:541-745-8001 [ MIME part of type text/html without a name stripped ]