all way thank you
i am sorry many ask ~
i have problem again
i made dispay box mode about layers
there is many layer in scene
i would like to control viewport
i thought 4 routine
1. if i select object ,
then display all layer except current selected object layer with boxmode
2. if i select object ,
then display current layer objects except current selected object with boxmode
3. if i select object , only current layer displayed with boxmode
4. all layers box mode on -> off
that routine is diffcult to me ~~