I wanted to run my game, which has the resolution of 320x240, in a 640x480 window.
So I set the window width + height to 640 and 480 and in the event sheet editor I added the following event:
Start of application -> System: set Zoom to (200,200)
which was the only way I could think of to get it to run in a double sized window.
It kind of works, but the graphics are blurred now because of the zoom. And when I use scrolling it doesn't work at all anymore. It doesn't center properly on the sprite it's supposed to (which it just does fine without the zoom).
So I was wondering if there was another way to get an application to run in a 2x window.