Cancel construction of GObject

[Jaroslav Šmíd <jardasmid gmail com>]

Is it possible to "cancel" construction in gobject-derived class?

Lets say I have GMyObject derived from GObject. In its init function I 
need to spawn a thread. When that fails, I would like to cancel 
construction of the object (so that gobjectclass' finalize function 
would be called on the object and g_object_new would return null-pointer).

I know I can create extra function, which would call g_type_new and 
spawn the thread then and destroy the object if it fails, but I would 
like my object to be instantiable by g_object_new and not force user to 
call extra initialization function and destroy the object if it fails.