get_type_from_function

Description:

[ NoWrapper ]
public abstract Type get_type_from_function (Builder builder, string function_name)

Try to lookup a `GType` via the given function name, specified explicitly in a GtkBuilder file, like via the "type-func" attribute in the ` <object>` tag.

This function is very rarely used. The C implementation will use dlsym and call the resulting function as a `GTypeFunc`. The default implementation will fail and just return g_type_invalid.