mirror of https://github.com/dahall/Vanara.git
Broke down and finally used an unsafe struct for this.
parent
83404805c7
commit
73792290f6
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@ -28,7 +28,7 @@ namespace Vanara.PInvoke
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// typedef struct _OBJECT_TYPE_LIST { WORD Level; WORD Sbz; GUID *ObjectType; } OBJECT_TYPE_LIST, *POBJECT_TYPE_LIST;
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[PInvokeData("winnt.h", MSDNShortId = "c729ff1a-65f3-4f6f-84dd-5700aead75ce")]
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[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode, Pack = 2)]
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public partial class OBJECT_TYPE_LIST : IDisposable
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public unsafe struct OBJECT_TYPE_LIST
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{
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/// <summary>
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/// Specifies the level of the object type in the hierarchy of an object and its subobjects. Level zero indicates the object itself.
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@ -41,39 +41,19 @@ namespace Vanara.PInvoke
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public ushort Sbz;
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/// <summary>A pointer to the GUID for the object or subobject.</summary>
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public IntPtr guidObjectType;
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public Guid* guidObjectType;
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/// <summary>Initializes a new instance of the <see cref="OBJECT_TYPE_LIST"/> struct.</summary>
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/// <param name="level">The level of the object type in the hierarchy of an object and its subobjects.</param>
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/// <param name="objType">The object or subobject identifier.</param>
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public OBJECT_TYPE_LIST(ObjectTypeListLevel level, Guid objType)
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public OBJECT_TYPE_LIST(ObjectTypeListLevel level, Guid objType = default)
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{
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Sbz = 0;
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this.level = level;
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ObjectId = objType;
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guidObjectType = objType == default ? null : &objType;
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}
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/// <summary>Represents an object that is itself.</summary>
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public static readonly OBJECT_TYPE_LIST Self = new OBJECT_TYPE_LIST(0, Guid.Empty);
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/// <summary>The GUID for the object or subobject</summary>
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public Guid ObjectId
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{
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get => guidObjectType == IntPtr.Zero ? Guid.Empty : (Guid)Marshal.PtrToStructure(guidObjectType, typeof(Guid));
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set
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{
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((IDisposable)this).Dispose();
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guidObjectType = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(Guid)));
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Marshal.StructureToPtr(value, guidObjectType, true);
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}
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}
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/// <summary>Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.</summary>
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void IDisposable.Dispose()
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{
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if (guidObjectType != IntPtr.Zero)
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Marshal.FreeCoTaskMem(guidObjectType);
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guidObjectType = IntPtr.Zero;
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}
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public static readonly OBJECT_TYPE_LIST Self = new OBJECT_TYPE_LIST();
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}
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}
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