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In order to support the interop between Win32 and WinRT objects, I've added a custom marshaler that gets brought it when needed. I also added a new test project to demonstrate WinRT interop.
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64 changes: 64 additions & 0 deletions
64
src/Microsoft.Windows.CsWin32/templates/WinRTCustomMarshaler.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| namespace Windows.Win32.CsWin32.InteropServices | ||
| { | ||
| internal class WinRTCustomMarshaler : global::System.Runtime.InteropServices.ICustomMarshaler | ||
| { | ||
| private string winrtClassName; | ||
| private bool lookedForFromAbi; | ||
| private global::System.Reflection.MethodInfo fromAbi; | ||
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| private WinRTCustomMarshaler(string cookie) | ||
| { | ||
| this.winrtClassName = cookie; | ||
| } | ||
|
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| /// <summary> | ||
| /// Gets an instance of the marshaler given a cookie | ||
| /// </summary> | ||
| /// <param name="cookie">Cookie used to create marshaler</param> | ||
| /// <returns>Marshaler</returns> | ||
| public static global::System.Runtime.InteropServices.ICustomMarshaler GetInstance(string cookie) | ||
| { | ||
| return new WinRTCustomMarshaler(cookie); | ||
| } | ||
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| void global::System.Runtime.InteropServices.ICustomMarshaler.CleanUpManagedData(object ManagedObj) | ||
| { | ||
| } | ||
|
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| void global::System.Runtime.InteropServices.ICustomMarshaler.CleanUpNativeData(global::System.IntPtr pNativeData) | ||
| { | ||
| global::System.Runtime.InteropServices.Marshal.Release(pNativeData); | ||
| } | ||
|
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| int global::System.Runtime.InteropServices.ICustomMarshaler.GetNativeDataSize() | ||
| { | ||
| throw new global::System.NotImplementedException(); | ||
| } | ||
|
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| global::System.IntPtr global::System.Runtime.InteropServices.ICustomMarshaler.MarshalManagedToNative(object ManagedObj) | ||
| { | ||
| throw new global::System.NotImplementedException(); | ||
| } | ||
|
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| object global::System.Runtime.InteropServices.ICustomMarshaler.MarshalNativeToManaged(global::System.IntPtr pNativeData) | ||
| { | ||
| if (!this.lookedForFromAbi) | ||
| { | ||
| var assembly = typeof(global::Windows.Foundation.IMemoryBuffer).Assembly; | ||
| var type = global::System.Type.GetType($"{this.winrtClassName}, {assembly.FullName}"); | ||
|
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| this.fromAbi = type.GetMethod("FromAbi"); | ||
| this.lookedForFromAbi = true; | ||
| } | ||
|
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| if (this.fromAbi != null) | ||
| { | ||
| return this.fromAbi.Invoke(null, new object[] { pNativeData }); | ||
| } | ||
| else | ||
| { | ||
| return global::System.Runtime.InteropServices.Marshal.GetObjectForIUnknown(pNativeData); | ||
| } | ||
| } | ||
| } | ||
| } |
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