dungpapai wrote:
But When I use French OS, I compile my proje ct, create a setup of this, When I install my setup in other computer which use English OS, My message' buttons are French Language or English??.
English language. But, as I said, usually the user knows that and does not complain about. Anyway if you want to fix this behaviour, you can write you own version of the MessageBox, it is not that difficult (or you can take a look to the article suggested by WalderMort).
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.