For 3 and 4 you could use ARiOSMobileCollectionView by @Antonio_Rinaldi
https://www.falcosoftware.com/xojo/
It works really well for displaying Pictures and multi-selection
For 3 and 4 you could use ARiOSMobileCollectionView by @Antonio_Rinaldi
https://www.falcosoftware.com/xojo/
It works really well for displaying Pictures and multi-selection