Returns the value associated with @key under @group_name as a signed 64-bit integer. This is similar to g_key_file_get_integer() but can return 64-bit results without truncation.
a non-%NULL group name
a non-%NULL key
the value associated with the key as a signed 64-bit integer, or 0 if the key was not found or could not be parsed.
GException on failure.
2.26
See Implementation
Returns the value associated with @key under @group_name as a signed 64-bit integer. This is similar to g_key_file_get_integer() but can return 64-bit results without truncation.