better-genshin-impact/Vision.WindowCapture/GraphicsCapture/Helpers/CaptureHelper.cs

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using System.Diagnostics.CodeAnalysis;
using Windows.Graphics.Capture;
using Windows.UI;
using Windows.Win32.Foundation;
using WinRT.Interop;

namespace Vision.WindowCapture.GraphicsCapture.Helpers;

public static class CaptureHelper
{
    public static void SetWindow(this GraphicsCapturePicker picker, IntPtr hwnd)
    {
        InitializeWithWindow.Initialize(picker, hwnd);
    }

    [return:MaybeNull]
    public static unsafe GraphicsCaptureItem CreateItemForWindow(HWND hwnd)
    {
        return GraphicsCaptureItem.TryCreateFromWindowId(*(WindowId*)&hwnd);
    }

    //public static GraphicsCaptureItem CreateItemForMonitor(IntPtr hmon)
    //{
    //    var factory = WindowsRuntimeMarshal.GetActivationFactory(typeof(GraphicsCaptureItem));
    //    var interop = (IGraphicsCaptureItemInterop)factory;
    //    var temp = typeof(GraphicsCaptureItem);         
    //    var itemPointer = interop.CreateForMonitor(hmon, GraphicsCaptureItemGuid);
    //    var item = Marshal.GetObjectForIUnknown(itemPointer) as GraphicsCaptureItem;
    //    Marshal.Release(itemPointer);

    //    return item;
    //}
}