javascript - Win7 laptop, with an external extended monitor, how to remove the black borders of the desktop background of the external monitor without reducing the pixels of the external monitor?

Question

1. How to remove black borders without using the external monitor as the main monitor

2. The mouse cannot enter the notebook monitor from the red line area of ​​the external monitor

Answer 1

You can try making a composite wallpaper. Just choose the resolution of the wallpaper according to each screen.
Tutorial on setting wallpapers of different resolutions for dual-screen monitors

Answer 2

Just find a wallpaper and set it according to the maximum display resolution

Answer 3

Set the external monitor as the main monitor. . .
And this is a technical Q&A community - -. . . How to set up the monitor came up. . ! ~!