27 lines
982 B
C#
27 lines
982 B
C#
using System;
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using System.Runtime.InteropServices;
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namespace Ink_Canvas.Helpers
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{
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/// <summary>
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/// .NET Core / 5+ 未提供 <see cref="Marshal.GetActiveObject"/>，通过 OLE 实现等效行为。
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/// </summary>
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internal static class OleActiveObject
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{
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[DllImport("ole32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
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private static extern int CLSIDFromProgID(string lpszProgId, out Guid lpclsid);
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[DllImport("oleaut32.dll", PreserveSig = true)]
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private static extern int GetActiveObject(ref Guid rclsid, IntPtr pvReserved, [MarshalAs(UnmanagedType.IUnknown)] out object ppunk);
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public static object GetActiveObject(string progId)
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{
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int hr = CLSIDFromProgID(progId, out Guid clsid);
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Marshal.ThrowExceptionForHR(hr);
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hr = GetActiveObject(ref clsid, IntPtr.Zero, out object obj);
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Marshal.ThrowExceptionForHR(hr);
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return obj;
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}
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}
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}
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