This is a general question, and I would just like someone to point me in the right direction here. (In other words, I'm not looking for someone to display any code :)
I'm just curious how some programs display moving graphic pictures on the screen without the background "square". In other words, I can put a black "Timage" on a screen and slide it across, but the entire "square" moves across. I'm curious how some programs show only the image, for example if it were a person walking across your screen, the screen background would show and only the person itself (without a background "square" around him) would show? Is there a particular language that is better for this type of graphics, or can someone point me towards some info on how this is done?