How To Make It Night Time With Visual Boy Advance Pokemon Pokemon Sapphire Emulator (Visual Boy Advance)?

Pokemon Sapphire Emulator (Visual Boy Advance)? - how to make it night time with visual boy advance pokemon

I have some questions that I wonder if people could answer:

1) If you are a Pokemon game on an emulator, there is no way to transfer pokemon to the handheld?

2) What are fighting / Pokemon Trading with an emulator?

3) For the pokemon sapphire that've you did not play in a position, even during the night?

Bono: and how to get the coin case?

Please help!