Is there anyway to set default window size and title bar like UWP in WinUI desktop application?

[sxlllslgh]

In XAML Controls Gallery project which is implemented by UWP, plenty of functions are implemented through UWP API, such as set title bar:

public static void UpdateTitleBar(bool isLeftMode) {
    CoreApplication.GetCurrentView().TitleBar.ExtendViewIntoTitleBar = isLeftMode;
    ApplicationViewTitleBar titleBar = ApplicationView.GetForCurrentView().TitleBar;
    if (isLeftMode) {
        NavigationRootPage.Current.NavigationView.PaneDisplayMode = Microsoft.UI.Xaml.Controls.NavigationViewPaneDisplayMode.Auto;
        titleBar.ButtonBackgroundColor = Colors.Transparent;
        titleBar.ButtonInactiveBackgroundColor = Colors.Transparent;
        } else {
        NavigationRootPage.Current.NavigationView.PaneDisplayMode = Microsoft.UI.Xaml.Controls.NavigationViewPaneDisplayMode.Top;
        var userSettings = new UISettings();
        titleBar.ButtonBackgroundColor = userSettings.GetColorValue(UIColorType.Accent);
        titleBar.ButtonInactiveBackgroundColor = userSettings.GetColorValue(UIColorType.Accent);
        }
}

Further, in UWP to set window default size, the code could be:

ApplicationView.PreferredLaunchViewSize = new Size(1600, 900);
ApplicationView.PreferredLaunchWindowingMode = ApplicationViewWindowingMode.PreferredLaunchViewSize;

But in WinUI desktop application, I could not find any API like CoreApplication or ApplicationView, could it be solved?

What's more, when I used Project Reunion template to create new project, the Package project was always created automatically and application could not run without it, is there anyway to remove it and I can run *.exe like traditional programs?

[maxkatz6]

I believe you can get win32-handle from WinUI Desktop Window instance.
With this handle you can use old school win32 APIs to manipulate with windows, including sizes.

[mdtauk]

Hopefully Reunion can finally provide a modern API for handling this, to take away the tedious old code for handling this.

Should be good for C# and C++

[sxlllslgh]

Thank you for your reply! It seems the only way to approach it now.

[riverar]

This is known broken and I hope it gets resolved before 1.0, because the workarounds are absolutely ridiculous.

microsoft/microsoft-ui-xaml#3689
microsoft/microsoft-ui-xaml#2564
microsoft/microsoft-ui-xaml#2731

[sxlllslgh]

Thank you for your reply! Hope modern APIs could be implemented soon.