fourth type of dnd

[Edscott Wilson García <edscott imp mx>]

Hello,

   I would like to enable a fourth type of drag+drog in a filemanager 
program. The first three,  GDK_ACTION_COPY ,  GDK_ACTION_MOVE ,
GDK_ACTION_LINK  do exactly that and are generated by combining the d+d with 
ctl and ctl-shift. But there is also a GDK_ACTION_PRIVATE which I would like 
to use. Or maybe the GDK_ACTION_ASK.
With what d+d keyboard combination could these be generated? 

Muchos thanks in advance for your time,

Edscott Wilson Garcia