No, the wireless function on a DS can't be accessed by the GBA portion of the console. If you're playing a GBA game on a DS, it is unable to use the DS's wireless function to connect to either another DS, or a wireless enabled GBA game on a genuine GBA console, such as FireRed or LeafGreen.
A DS's Slot-2 (GBA slot) is unable to use the DS's wireless capabilities, even if it's a GBA game which could use the GBA wireless adaptors. You can only use the online portions of a GBA game using an actual GBA and a GBA wireless adaptor.
no
No, the GBA games cannot use the console's wireless capability, even if they are games that did work with the GBA wireless adaptor. You will need to use actual GBA consoles to do it, as well as a link cable or two GBA wireless adaptors.
Yes but you also can trade using a GBA to GBA link cable.
Make sure the GBA link cable is connected properly or the wireless adapters are connected properly if your using wireless adapters point the GBA's at each other and check which game has to confirm the link you must press A to confirm the link to go in the trade center.
You can migrate GBA Pokemon to a DS Pokemon game but you can't trade using the GBA game trying to trade with another GBA game.
The GBA slot on a DS cannot use the DS' wireless capabilities, even if it's a game that was compatible with the GBA wireless adaptor. You'll need genuine GBA consoles to do it.
No. There is no cable to do so, nor is it possible via wireless. Game boys and Game Boy Colors are very outdated, so I wouldn't think Nintendo would do something new with them.
No, the DS cannot be connected to a GBA either by link cable, or by the DS' internal wireless, to a GBA using a GBA wireless adaptor. The only form of linking they can do is to have both the GBA and DS cartridge inserted into the same DS, to use functions like migration in the Pokemon games.
No, i do not even think there is a Game Boy Advance game that has Wireless Internet Features anyway.
No, GBA games can't use the DS lite's wireless functionality, even games that supported the GBA wi-fi addons. The only way to do it is with two GBA systems.
No, GBA games in a DS can't use the DS's wireless functions at all. That's even if it's a game that did have wireless capabilities through the GBA wireless adaptor, such as FireRed and LeafGreen.