rem: static unsigned defDraggingUpdated(WMView *self, WMDraggingInfo *info)
add: defDraggingUpdated(WMView *self, WMDraggingInfo *info)
context: static unsigned defDraggingUpdated(WMView *self, WMDraggingInfo *info){    printf("%x drag updat\n", W_VIEW_DRAWABLE(self));        return WDOperationNone;}