Net Maui Windows How to hide titlebar and custom maximize and minimize events?

Question

Net Maui Windows How to hide titlebar and custom move maximize and minimize events? thanks..

I have found this for hiding title bar but on top little gray margin problem how we can fix it ?

            //hide titlebar

#if WINDOWS
            builder.ConfigureLifecycleEvents(events =>
            {
                // Make sure to add "using Microsoft.Maui.LifecycleEvents;" in the top of the file 
                events.AddWindows(windowsLifecycleBuilder =>
                {
                    windowsLifecycleBuilder.OnWindowCreated(window =>
                    {
                        window.ExtendsContentIntoTitleBar = false;
                        var handle = WinRT.Interop.WindowNative.GetWindowHandle(window);
                        var id = Microsoft.UI.Win32Interop.GetWindowIdFromWindow(handle);
                        var appWindow = Microsoft.UI.Windowing.AppWindow.GetFromWindowId(id);
                        switch (appWindow.Presenter)
                        {
                            case Microsoft.UI.Windowing.OverlappedPresenter overlappedPresenter:
                                overlappedPresenter.SetBorderAndTitleBar(false, false);
                                //overlappedPresenter.Maximize();
                                break;
                        }
                    });
                });
            });
#endif


            ```

also I found this but GetParentWindow()  can not regornize ? Thanks


```csharp
#if WINDOWS
    private Microsoft.UI.Windowing.AppWindow GetAppWindow(MauiWinUIWindow window)
    {
        var handle = WinRT.Interop.WindowNative.GetWindowHandle(window);
        var id = Microsoft.UI.Win32Interop.GetWindowIdFromWindow(handle);
        var appWindow = Microsoft.UI.Windowing.AppWindow.GetFromWindowId(id);
        return appWindow;
    }
#endif

    private void OnToggleFullscreenClicked(object sender, EventArgs e)
	{
#if WINDOWS
		var window = GetParentWindow().Handler.PlatformView as MauiWinUIWindow;
        
        var appWindow = GetAppWindow(window);

        switch (appWindow.Presenter)
        {
            case Microsoft.UI.Windowing.OverlappedPresenter overlappedPresenter:
                if (overlappedPresenter.State == Microsoft.UI.Windowing.OverlappedPresenterState.Maximized)
                {
                    overlappedPresenter.SetBorderAndTitleBar(true, true);
                    overlappedPresenter.Restore();
                }
                else
                {
                    overlappedPresenter.SetBorderAndTitleBar(false, false);
                    overlappedPresenter.Maximize();
                }

                break;
        }
#endif
    }

    private void OnToggleMaximizeClicked(object sender, EventArgs e)
    {
#if WINDOWS
        var window = GetParentWindow().Handler.PlatformView as MauiWinUIWindow;

        var appWindow = GetAppWindow(window);

        switch (appWindow.Presenter)
        {
            case Microsoft.UI.Windowing.OverlappedPresenter overlappedPresenter:
                overlappedPresenter.IsMaximizable = !overlappedPresenter.IsMaximizable;
                break;
        }
#endif
    }

    private void OnToggleMinimizeClicked(object sender, EventArgs e)
    {
#if WINDOWS
        var window = GetParentWindow().Handler.PlatformView as MauiWinUIWindow;

        var appWindow = GetAppWindow(window);

        switch (appWindow.Presenter)
        {
            case Microsoft.UI.Windowing.OverlappedPresenter overlappedPresenter:
                overlappedPresenter.IsMinimizable = !overlappedPresenter.IsMinimizable;
                break;
        }
#endif
    }

Answer 1

Hello,

In order to eliminate this blank space, you will also need to do the following.

case Microsoft.UI.Windowing.OverlappedPresenter overlappedPresenter:

    overlappedPresenter.IsMaximizable = false;
    overlappedPresenter.IsResizable = false;
    overlappedPresenter.IsMinimizable = false;
    overlappedPresenter.SetBorderAndTitleBar(false, false);

also I found this but GetParentWindow() can not regornize ? Thanks

GetParentWindow() is a method that belongs to the Page class. Therefore, you need to put these methods into the ContentPage class, such as MainPage.

Best Regards,

Alec Liu.

---

If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.