extend_with_template

Description:

public bool extend_with_template (Object object, Type template_type, string buffer, ssize_t length) throws Error

Main private entry point for building composite components from template XML.

Most likely you do not need to call this function in applications as templates are handled by `GtkWidget`.

this	a `GtkBuilder`
object	the object that is being extended
template_type	the type that the template is for
buffer	the string to parse
length	the length of `buffer` (may be -1 if `buffer` is nul-terminated)

A positive value on success, 0 if an error occurred