Mine

gint buffersize;

Glib::OptionEntry phimage::entry(char short_name, const char* long_name, const char* description)
{
Glib::OptionEntry ent1;
ent1.set_short_name(short_name);
ent1.set_long_name(long_name);
ent1.set_description(description);
return ent1;
}

void phimage::init_options(int argc, char **argv)
{

Glib::OptionContext test;
Glib::OptionGroup idiot("example", "example", "example");
idiot.add_entry(this->entry('b',"buffersize","no"), buffersize);
test.set_main_group(idiot);
test.parse(argc, argv);
cout << "test";
}