The Most Useless Program EVER!
Ruby with Shoes, 110
Shoes.app{button('Close'){exit}
p=para
t=Time.now
animate{u=(t-Time.now).to_i+10
exit if u<0
p.text=' '*u+?<}}
Makes a little arrow that pushes a "Close" button. (Pushing the close button manually also closes the window.)
Windows Batch, 4 bytes
Save the following program to a .bat
file in your user folder (C:\Users\username):
Exit
When executed from the Start, Run prompt, a new window opens, types the command Exit
and executes it.
TI-Basic, 3 bytes
DispGraph:1
hex: 31 3E DF
Explanation
DispGraph
Displays the graph (a graphical window)
:1
Simulates a press of 1
(by storing 1
to Ans
at the last step of a program), which takes the calculator back to the home screen. A user could do the same thing.