Two functions with different args. Taking address of the one

[Виталий Фадеев]

Have:
     void process( ref MouseKeyEvent event )
     {
        ...
     }

     void process( ref MouseMoveEvent event )
     {
        ...
     }

Want:
     _processMouseKey  = &process; // <-- not works
     _processMouseMove = &process; // <-- not works

What is correct way to get address of function with specific 
argument ?