Appends a formatted string onto the end of a GString This function is similar to g_string_append_printf() except that the arguments to the format string are passed as a va_list.
the string format. See the printf() documentation
the list of arguments to insert in the output
2.14
Appends a formatted string onto the end of a GString This function is similar to g_string_append_printf() except that the arguments to the format string are passed as a va_list.