Reply 600 of 733, by Ant_222
Please, test fullscreen emulation via a borderless window as imlemented in alpha 20. To activate the new feature set fullborderless to true.
I don't know about the particulars of borderless fullscreen but when modifying SDL to get DOSBox to work on NT 3.50 I had to disable fullscreen support in SDL. So when you switch DOSBox to "fullscreen" it's a fullscreen window. You can also tell it's a window see there's no desktop icon mess or lag when switching between fullscreen and window mode and there's the DOSBox title bar at the top of the screen. Dunno if useful for your purposes since it's likely overkill but it was fun figuring it out.
Thank you, but (I hope) I have managed without your reference. To put it short, it was a matter of passing SDL_NOFRAME instead of SDL_FULLSCREEN.