API question: dbus_message_iter_append_simple

[Daniel Stone]

Hi,
Why does this take a pointer to a string?

i.e.,
char *foo = strdup("some test data");
dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &foo);
instead of:
dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, "some test data");

Cheers,
Daniel
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