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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Runtime.InteropServices;
using System;
using System.Reflection;
using System.Text;
using TestLibrary;
unsafe class ThisCallNative
{
public struct C
{
public struct VtableLayout
{
public IntPtr getSize;
}
public VtableLayout* vtable;
private int c;
private float width;
private float height;
}
public struct SizeF
{
public float width;
public float height;
}
[UnmanagedFunctionPointer(CallingConvention.ThisCall)]
public delegate SizeF GetSizeFn(C* c);
[DllImport(nameof(ThisCallNative))]
public static extern C* CreateInstanceOfC(float width, float height);
}
class ThisCallTest
{
public unsafe static int Main(string[] args)
{
try
{
float width = 1.0f;
float height = 2.0f;
ThisCallNative.C* instance = ThisCallNative.CreateInstanceOfC(width, height);
ThisCallNative.GetSizeFn callback = Marshal.GetDelegateForFunctionPointer<ThisCallNative.GetSizeFn>(instance->vtable->getSize);
ThisCallNative.SizeF result = callback(instance);
Assert.AreEqual(width, result.width);
Assert.AreEqual(height, result.height);
}
catch (System.Exception ex)
{
Console.WriteLine(ex);
return 101;
}
return 100;
}
}
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