![]() Your other option is to hide the default title bar and replace it with your own custom content. In this case, the system retains responsibility for all other aspects of the title bar, such as drawing the app title and defining drag areas. Simple customization is only available for Windows App SDK and UWP/WinUI 2.įor simple customization, such as changing the title bar color, you can set properties on your app window's title bar object to specify the colors you want to use for title bar elements. ![]() ![]() There are two levels of customization that you can apply to the title bar: apply minor modifications to the default title bar, or extend your app canvas into the title bar area and provide completely custom content. See Windowing functionality migration for more information. If you are considering migrating your UWP app to Windows App SDK, please view our windowing functionality migration guide. To customize the title bar of a UWP app that uses secondary windows, use ApplicationView as described in Show multiple views with ApplicationView. The Windows.UI.WindowManagement.AppWindow class, used for secondary windows in UWP apps, does not support title bar customization. Write custom code to calculate and set drag rectangles, including when the window size changes. Partially, since Windows App SDK 1.2 (see the Windows App SDK tab).ĪppWindowTitleBar.ExtendsContentIntoTitleBarĭefine your title bar in a XAML UIElement, then call SetTitleBar(UIElement). This table describes the differences between Window and AppWindow. You can pass the window handle of the XAML Window to the AppWindow object and use the AppWindow functionality in conjunction with the Window APIs (see the Windows App SDK tab). WinUI 3 is also part of the Windows App SDK, so both the Window class and the AppWindow class are available to customize the title bar. The Window class includes APIs that let you replace the standard title bar with your own custom content. Windowing functionality in WinUI 3 is through the Microsoft.UI.Xaml.Window class, which is based on the Win32 HWND model. Important APIs: Microsoft.UI.Xaml.Window class, Window.ExtendsContentIntoTitleBar property, Window.SetTitleBar method.For more about the interop APIs, see Manage app windows - UI framework and HWND interop and the Windowing gallery sample. With this AppWindow object you have access to the title bar customization APIs. You get an AppWindow object from an existing window using the interop APIs. You can use AppWindow APIs with any UI framework that the Windows App SDK supports - Win32, WPF, WinForms, or WinUI 3 - and you can adopt them incrementally, using only the APIs you need. These APIs can be used in conjunction with the Windows App SDK APIs (see the WinUI 3 tab). We recommend that you check AppWindowTitleBar.IsCustomizationSupported in your code before you call these APIs to ensure your app doesn't crash on other versions of Windows.įor XAML apps that use WinUI 3, XAML Window APIs provide a simpler way to customize the title bar that also works on Windows 10. Partially, since Windows App SDK 1.2 (Color customization is not supported)įor information on which APIs are supported on Windows 10 since Windows App SDK 1.2, refer to the Windows App SDK Release Notes page under "Windowing" section for details. I guess I could put one around the header section and another around the details section, but it makes it look horrible.Support for title bar customization APIs varies across different versions of Windows and different versions of Windows App SDK. ![]() I've tried setting a rectangle around my forms, but since I'm using form headers I can't put it around the whole form. So, I need a way to hide the form title bar while being able to set a thin border for the form to establish its bounds clearlier. I haven't found a way to hide it other than setting the form border to none, but that makes some small forms that popup on top of other forms (which I don't want to close when opening the other form because of crossed references and various visual reasons) merge with the form on the background and make it hardly distingishable. I have some pop-up forms which I want to show without title bar since I've designed custom placement functions and I don't want them to be moved or closed from the title bar, so having it show only makes the form look uglier. I'm pretty sure this must have been asked before but I can't seem to find a solution.
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