74 lines
2.1 KiB
C#
74 lines
2.1 KiB
C#
using System.Runtime.InteropServices;
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namespace Ghost.Graphics.Contracts;
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[System.Diagnostics.CodeAnalysis.SuppressMessage("Interoperability", "CA1416:Validate platform compatibility", Justification = "<Pending>")]
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public unsafe readonly struct ISwapChainPanelNative : ISwapChainPanelNative.Interface, IDisposable
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{
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[ComImport]
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[Guid("63aad0b8-7c24-40ff-85a8-640d944cc325")]
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[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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internal interface Interface
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{
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// IUnknown: QueryInterface, AddRef, Release
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void QueryInterface(in Guid riid, out IntPtr ppvObject);
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uint AddRef();
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uint Release();
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// SetSwapChain is the 4th slot in the vtable (0-based index 3)
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int SetSwapChain(IntPtr swapChainPtr);
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}
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private readonly IntPtr _nativePtr;
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public ISwapChainPanelNative(IntPtr nativePtr)
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{
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_nativePtr = nativePtr;
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}
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public void QueryInterface(in Guid riid, out nint ppvObject)
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{
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throw new NotImplementedException();
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}
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public uint AddRef()
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{
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throw new NotImplementedException();
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}
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public uint Release()
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{
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throw new NotImplementedException();
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}
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public static ISwapChainPanelNative FromSwapChainPanel(object panel)
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{
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// Get the IUnknown/IInspectable pointer
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var unknown = Marshal.GetIUnknownForObject(panel);
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try
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{
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// Query for ISwapChainPanelNative
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var iid = typeof(Interface).GUID;
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var result = Marshal.QueryInterface(unknown, in iid, out var nativePtr);
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if (result < 0)
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{
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Marshal.ThrowExceptionForHR(result);
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}
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return new ISwapChainPanelNative(nativePtr);
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}
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finally
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{
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Marshal.Release(unknown);
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}
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}
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public int SetSwapChain(IntPtr swapChainPtr)
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{
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var vtbl = *(void***)_nativePtr;
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var setSwapChainFn = (delegate* unmanaged<IntPtr, IntPtr, int>)vtbl[3];
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return setSwapChainFn(_nativePtr, swapChainPtr);
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}
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public void Dispose() => Marshal.Release(_nativePtr);
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} |