How to create a full screen Windows Desktop application

[jldearmas]

I started to test Uno Platform as an alternative to .NET MAUI, which by the way has been a bad experience to work with it.

I installed last Uno's Extension (Templates 5.x) to Visual Studio 2022 (v 17.8), run Uno.Check tool, and finally created a minimal project in order to create a simple full screen app. I only added Windows as Platform.

After searching and searching in internet I added to App class a constructor setting PreferredLaunchWindowingMode.

    public App()
    {
        ApplicationView.PreferredLaunchWindowingMode = ApplicationViewWindowingMode.FullScreen;
    }

But it didn't work.

[limeniye]

Hello, @jldearmas.
ApplicationView is not supported on WinUI.
Lets check it there

[limeniye]

try to use this way:
https://learn.microsoft.com/en-us/answers/questions/980604/winui-3-fullscreen

[jldearmas]

Thanks you so much, I'll try with that and let you know my results.

It could be nice if you (at Uno Foundation) create a new (platform independent) API to allow some functions like:

• Set Fullscreen mode
• Set Size & Position
• Set maxzimized size

Just a recomendation ;)

[limeniye]

Just a recomendation ;)

Thank you for your recomendation. This will be implemented in the following issues: #10874 #14275

I have little changed the sample and it works for me:

private AppWindow GetAppWindowForCurrentWindow()
{
    var appWindowId = XamlRoot.ContentIslandEnvironment.AppWindowId;
    return AppWindow.GetFromWindowId(appWindowId);
}

UnoAppFullsizeMode.zip