A'llo, to prevent the player from being able to interact with the game you can wrap the action blocks with cutscene wrappers. There are 2 different types of cutscene wrappers, & they are the
begin/
end cutscene action parts & the
hide/
show cursor action parts. Begin/end cutscene wrappers can be skipped with the ESC (escape) key, whereas hide/show cursor completely disables all interaction, so make sure you use the relevant wrapper for each situation.
Here's an example of how your action block might look:
begin cutscene
send character "current character" to position 100, 500 and wait
display text "blah blah blah!"
end cutscene
There is actually a couple other methods for disabling interaction that can be achieved via an interface or via scripting, but I'll not go into those.
As for your question about fullscreen, sure you can make it run in fullscreen mode when you play the game via the Visionaire Studio editor - your exported game however will be controlled via a config.ini file. Anyway, to make the game run fullscreen while running it via VS, click on the menu button on the top left of Visionaire Studio > extras section > options, then click on the player tab of the box that should have just opened up & enable the fullscreen & activate support for widescreen displays options.