static int pose_select_linked_poll(bContext *C) { return (ED_operator_view3d_active(C) && ED_operator_posemode(C)); }
static int view3d_layers_poll(bContext *C) { return (ED_operator_view3d_active(C) && CTX_wm_view3d(C)->localvd == NULL); }
static int armature_select_linked_poll(bContext *C) { return (ED_operator_view3d_active(C) && ED_operator_editarmature(C) ); }