まど表示 ひょうじ いき変換 へんかんじゃなかったです
ma dohyōji iki henka nja nakattadesu

Noun
Desu Copula

The polite, past negative form of 窓表示域変換

1. Wasn't the window display area conversion.

Past/Perfective
Negative
Polite
Casual Register
Computing