how could i turn off esc+alt for my screen blocker?

hello guys , im new here i hope u guys can help with my screen blocker...the problem is when i lock the screen by the my program the locker can be unlocked easily by esc and i want to disable this ....i dont want my program unlocked by esc+alt so how could i make this happen?

no 1?

wow...104 ppl checked this problem but non of them could solve it...

simply take the ascii code for the esc key and block that key too