/// <summary>
/// Initializes a new instance of the <see cref="WindowsXamlHostBase"/> class.
/// </summary>
public WindowsXamlHostBase()
{
SetStyle(ControlStyles.ContainerControl, true);
SetStyle(ControlStyles.SupportsTransparentBackColor, true);
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
// Must be a container control with TabStop == false to allow nested UWP XAML Focus
// BUGBUG: Uncomment when nested Focus is available
// TabStop = false;
// Respond to size changes on this Control
SizeChanged += OnWindowXamlHostSizeChanged;
// Windows.UI.Xaml.Application object is required for loading custom control metadata. If a custom
// Application object is not provided by the application, the host control will create one (XamlApplication).
// Instantiation of the application object must occur before creating the DesktopWindowXamlSource instance.
// If no Application object is created before DesktopWindowXamlSource is created, DestkopWindowXamlSource
// will create a generic Application object unable to load custom UWP XAML metadata.
Microsoft.Toolkit.Win32.UI.XamlHost.XamlApplication.GetOrCreateXamlApplicationInstance(ref _application);
// Create an instance of the WindowsXamlManager. This initializes and holds a
// reference on the UWP XAML DXamlCore and must be explicitly created before
// any UWP XAML types are programmatically created. If WindowsXamlManager has
// not been created before creating DesktopWindowXamlSource, DesktopWindowXaml source
// will create an instance of WindowsXamlManager internally. (Creation is explicit
// here to illustrate how to initialize UWP XAML before initializing the DesktopWindowXamlSource.)
_windowsXamlManager = Windows.UI.Xaml.Hosting.WindowsXamlManager.InitializeForCurrentThread();
// Create DesktopWindowXamlSource, host for UWP XAML content
_xamlSource = new Windows.UI.Xaml.Hosting.DesktopWindowXamlSource();
// Hook up method for DesktopWindowXamlSource Focus handling
_xamlSource.TakeFocusRequested += this.OnTakeFocusRequested;
}
/// <summary>
/// Initializes a new instance of the <see cref="WindowsXamlHostBase"/> class.
/// Default constructor is required for use in WPF markup.
/// (When the default constructor is called, object properties have not been set. Put WPF logic in OnInitialized.)
/// </summary>
public WindowsXamlHostBase()
{
// Create a custom UWP XAML Application object that implements reflection-based XAML metdata probing.
// Instantiation of the application object must occur before creating the DesktopWindowXamlSource instance.
// DesktopWindowXamlSource will create a generic Application object unable to load custom UWP XAML metadata.
if (_application == null)
{
try
{
// global::Windows.UI.Xaml.Application.Current may throw if DXamlCore has not been initialized.
// Treat the exception as an uninitialized global::Windows.UI.Xaml.Application condition.
_application = Windows.UI.Xaml.Application.Current as XamlApplication;
}
catch
{
_application = new XamlApplication();
}
}
// Create an instance of the WindowsXamlManager. This initializes and holds a
// reference on the UWP XAML DXamlCore and must be explicitly created before
// any UWP XAML types are programmatically created. If WindowsXamlManager has
// not been created before creating DesktopWindowXamlSource, DesktopWindowXaml source
// will create an instance of WindowsXamlManager internally. (Creation is explicit
// here to illustrate how to initialize UWP XAML before initializing the DesktopWindowXamlSource.)
_windowsXamlManager = Windows.UI.Xaml.Hosting.WindowsXamlManager.InitializeForCurrentThread();
// Create DesktopWindowXamlSource, host for UWP XAML content
desktopWindowXamlSource = new Windows.UI.Xaml.Hosting.DesktopWindowXamlSource();
// Hook OnTakeFocus event for Focus processing
desktopWindowXamlSource.TakeFocusRequested += OnTakeFocusRequested;
}
/// <summary>
/// Initializes a new instance of the <see cref="WindowsXamlHostBase"/> class.
/// </summary>
/// <remarks>
/// Default constructor is required for use in WPF markup. When the default constructor is called,
/// object properties have not been set. Put WPF logic in OnInitialized.
/// </remarks>
public WindowsXamlHostBase()
{
// Windows.UI.Xaml.Application object is required for loading custom control metadata. If a custom
// Application object is not provided by the application, the host control will create one (XamlApplication).
// Instantiation of the application object must occur before creating the DesktopWindowXamlSource instance.
// If no Application object is created before DesktopWindowXamlSource is created, DestkopWindowXamlSource
// will create a generic Application object unable to load custom UWP XAML metadata.
Action <XamlApplication> action = Microsoft.Toolkit.Win32.UI.XamlHost.XamlApplication.GetOrCreateXamlApplicationInstance(ref _application);
// Create an instance of the WindowsXamlManager. This initializes and holds a
// reference on the UWP XAML DXamlCore and must be explicitly created before
// any UWP XAML types are programmatically created. If WindowsXamlManager has
// not been created before creating DesktopWindowXamlSource, DesktopWindowXaml source
// will create an instance of WindowsXamlManager internally. (Creation is explicit
// here to illustrate how to initialize UWP XAML before initializing the DesktopWindowXamlSource.)
_windowsXamlManager = windows.UI.Xaml.Hosting.WindowsXamlManager.InitializeForCurrentThread();
action(_application as XamlApplication);
// Create DesktopWindowXamlSource, host for UWP XAML content
_xamlSource = new windows.UI.Xaml.Hosting.DesktopWindowXamlSource();
// Hook DesktopWindowXamlSource OnTakeFocus event for Focus processing
_xamlSource.TakeFocusRequested += OnTakeFocusRequested;
}
/// <summary>
/// Initializes a new instance of the <see cref="WindowsXamlHostBase"/> class.
/// </summary>
public WindowsXamlHostBase()
{
// Return immediately if control is instantiated by the Visual Studio Designer
// https://stackoverflow.com/questions/1166226/detecting-design-mode-from-a-controls-constructor
if (LicenseManager.UsageMode == LicenseUsageMode.Designtime)
{
return;
}
SetStyle(ControlStyles.ContainerControl, true);
SetStyle(ControlStyles.SupportsTransparentBackColor, true);
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
// Must be a container control with TabStop == false to allow nested UWP XAML Focus
// BUGBUG: Uncomment when nested Focus is available
// TabStop = false;
// Respond to size changes on this Control
SizeChanged += OnWindowXamlHostSizeChanged;
// Windows.UI.Xaml.Application object is required for loading custom control metadata. If a custom
// Application object is not provided by the application, the host control will create one (XamlApplication).
// Instantiation of the application object must occur before creating the DesktopWindowXamlSource instance.
// If no Application object is created before DesktopWindowXamlSource is created, DestkopWindowXamlSource
// will create a generic Application object unable to load custom UWP XAML metadata.
Microsoft.Toolkit.Win32.UI.XamlHost.XamlApplication.GetOrCreateXamlApplicationInstance(ref _application);
// Create an instance of the WindowsXamlManager. This initializes and holds a
// reference on the UWP XAML DXamlCore and must be explicitly created before
// any UWP XAML types are programmatically created. If WindowsXamlManager has
// not been created before creating DesktopWindowXamlSource, DesktopWindowXaml source
// will create an instance of WindowsXamlManager internally. (Creation is explicit
// here to illustrate how to initialize UWP XAML before initializing the DesktopWindowXamlSource.)
_windowsXamlManager = Windows.UI.Xaml.Hosting.WindowsXamlManager.InitializeForCurrentThread();
// Create DesktopWindowXamlSource, host for UWP XAML content
_xamlSource = new Windows.UI.Xaml.Hosting.DesktopWindowXamlSource();
// Hook up method for DesktopWindowXamlSource Focus handling
_xamlSource.TakeFocusRequested += this.OnTakeFocusRequested;
// Check if the XAML island scales the content according to the current dpi value
_xamlIslandHandlesDpiScaling = ApiInformation.IsApiContractPresent("Windows.Foundation.UniversalApiContract", 8);
// Add scaling panel as the root XAML element
_xamlSource.Content = new DpiScalingPanel();
}
public WindowsXamlHostBase()
{
SetStyle(ControlStyles.SupportsTransparentBackColor, true);
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
// Respond to size changes on this Control
SizeChanged += WindowsXamlHost_SizeChanged;
// Create a custom UWP XAML Application object that implements reflection-based XAML metdata probing.
// Instantiation of the application object must occur before creating the DesktopWindowXamlSource instance.
// DesktopWindowXamlSource will create a generic Application object unable to load custom UWP XAML metadata.
if (_application == null)
{
try
{
// global::Windows.UI.Xaml.Application.Current may throw if DXamlCore has not been initialized.
// Treat the exception as an uninitialized global::Windows.UI.Xaml.Application condition.
_application = Windows.UI.Xaml.Application.Current as XamlApplication;
}
catch
{
_application = new XamlApplication();
}
}
// Create an instance of the WindowsXamlManager. This initializes and holds a
// reference on the UWP XAML DXamlCore and must be explicitly created before
// any UWP XAML types are programmatically created. If WindowsXamlManager has
// not been created before creating DesktopWindowXamlSource, DesktopWindowXaml source
// will create an instance of WindowsXamlManager internally. (Creation is explicit
// here to illustrate how to initialize UWP XAML before initializing the DesktopWindowXamlSource.)
_windowsXamlManager = Windows.UI.Xaml.Hosting.WindowsXamlManager.InitializeForCurrentThread();
// Create DesktopWindowXamlSource, host for UWP XAML content
desktopWindowXamlSource = new Windows.UI.Xaml.Hosting.DesktopWindowXamlSource();
}
