Hi, pretty simple question but I can't find the answer anywhere in the GCC documentation or on the web/mailing lists. I am getting an error from the compiler like this: $ g++ -c -o Viewer.o Viewer.cpp In file included from Viewer.cpp:1: Viewer.h:4:23: error: gtkmm/box.h: No such file or directory I can see from the source that the #include occurs on line 4 of Viewer.h but what is the 23? I only seem to get this second number on "No such file or directory" messages. In the GCC documentation it only mentions filename and line number being given, no mention of a possible second number or what it is. Just curious. Thanks, Mike.
