#include const char *name = "User Agent"; Lumi *lumi; void set_user_agent(int argc, char **argv){ g_object_set(webkit_web_view_get_settings(WEBKIT_WEB_VIEW(lumi->web_view)), "user-agent", (argc>1 ? argv[1] : 0), NULL); } Command commands[] = { { "user-agent", set_user_agent }, { 0 } };