Splash screen customization

The default configuration for the bootstrapper is to show the Uno Platform logo. This can be changed, along with the background color and progress bar color by doing the following:

• Create an AppManifest.js file in the WasmScripts folder

• Set its build action to EmbeddedResource

• Add the following content:

  var UnoAppManifest = {
      splashScreenImage: "https://microsoft.github.io/microsoft-ui-xaml/img/winui-logo.png",
      splashScreenColor: "#00f",
      accentColor: "#f00",
      displayName: "WinUI App"
  }
  

These properties are supported in the manifest:

• lightThemeBackgroundColor (optional) to change the light theme background color
• darkThemeBackgroundColor (optional)to change the dark theme background color
• splashScreenColor to change the background color regardless of the theme. When set to transparent, lightThemeBackgroundColor and darkThemeBackgroundColor will be used, otherwise the default browser background color will be used.