53 lines
1.9 KiB
C#
53 lines
1.9 KiB
C#
using System;
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using System.Runtime.InteropServices;
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using Windows.Graphics.Capture;
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namespace ytLive.Services;
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/// <summary>
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/// Desktop-interop bridges for Graphics Capture that CsWinRT can't project:
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/// creating a <see cref="GraphicsCaptureItem"/> from an HMONITOR/HWND via the
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/// activation factory's IGraphicsCaptureItemInterop, and wiring the
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/// GraphicsCapturePicker to an owner window via IInitializeWithWindow.
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/// GUIDs and signatures come from the official Windows GraphicsCapture samples.
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/// </summary>
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internal static class CaptureInterop
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{
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private static readonly Guid GraphicsCaptureItemGuid = new("79C3F95B-31F7-4EC2-A464-632EF5D30760");
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public static GraphicsCaptureItem CreateForMonitor(IntPtr hmonitor)
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{
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var interop = GraphicsCaptureItem.As<IGraphicsCaptureItemInterop>();
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return GraphicsCaptureItem.FromAbi(interop.CreateForMonitor(hmonitor, GraphicsCaptureItemGuid));
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}
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public static GraphicsCaptureItem CreateForWindow(IntPtr hwnd)
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{
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var interop = GraphicsCaptureItem.As<IGraphicsCaptureItemInterop>();
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return GraphicsCaptureItem.FromAbi(interop.CreateForWindow(hwnd, GraphicsCaptureItemGuid));
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}
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public static void SetWindowOwner(GraphicsCapturePicker picker, IntPtr hwnd)
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{
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var interop = (IInitializeWithWindow)(object)picker;
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interop.Initialize(hwnd);
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}
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[ComImport]
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[Guid("3628E81B-3CAC-4C60-B7F4-23CE0E0C3356")]
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[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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private interface IGraphicsCaptureItemInterop
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{
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IntPtr CreateForWindow([In] IntPtr window, [In] ref Guid iid);
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IntPtr CreateForMonitor([In] IntPtr monitor, [In] ref Guid iid);
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}
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[ComImport]
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[Guid("3E68D4BD-7135-4D10-8018-9FB6D9F33FA1")]
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[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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private interface IInitializeWithWindow
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{
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void Initialize(IntPtr hwnd);
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}
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}
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