Question

I’m using WPF

I would like that my windows take the entire screen of all the screen.

If I use the code snippet :

WindowState = WindowState.Normal;  
WindowStyle = WindowStyle.None;  
Topmost = true;  
WindowState = WindowState.Maximized;

it takes only the active screen.
How to fill all the screen ?

thanks for your help

Answer 1

The maximized window state only fills one screen. That’s how windows work in Windows.

You can either create a separate window for every display, or use a single window position it at the lowest x/y coordinates for all displays and resize it so you fill up every display. You would have to keep note on where the screens are on your window surface, though, since there are display configurations you wouldn’t expect, such as the following one:

        ┌──────┐
        │      │
        │      │
        │      │ ┌──────────┐
        │      │ │          │
        └──────┘ │          │
    ┌───────┐    │          │
    │       │    │          │
    │       │    │          │
    │       │    └──────────┘
    │       │
    └───────┘

Entirely possible and a pain to handle if you only expect rectangular setups.