how can customize interface such as menu toolbar

hi everybody
i am searching customize to interface such as menu…but i coultd not find anywhere…plz help me …

i wana place to toolbar which is top of window… i wana reach easialy …

How can arrange it ??

it may be this such as inkscape or other grafic programs…

file edit veiws canvas …

thanks to all for reply on…

not possible at this time … but you can help, if you have some coding skill … (or friends who have… )
sourceforge.net/p/synfig/mailman … /32015967/

Thanks to reply …
i have no skill well coding yet .i know a little python programing language only…

i hope that anyone who know coding…this work wil be at hand

thaks to all community…