You didn't seem to understand what ector saidOk, although not really understand i think i'll just use 4:3 because a bit ugly in 16:9 because of the stretch
In fact, most Gamecube games don't have a widescreen setting, so checking 16:9 in OGL will just result in a stretched image.
But -Every- Wii games do have a 16:9 mode ! and this mode can be enabled in the IPL settings.
Once it's enabled Wii games will use a 16:9 aspect ratio, and to get correct result you'll have to set 16:9 in the OGL plugin too.
Then your -Wii- games will play fine without stretching :thumb:
(though as ector said, currently, setting 16:9 in IPL doesn't automatically set OGL to use it, and vice versa, so you'll have to set both)