Micah

using System;
using System.Runtime.InteropServices;

namespace Win32
{
    class Kernel32
    {
        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr HeapAlloc(IntPtr hHeap, uint dwFlags, UIntPtr dwBytes);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr GetProcessHeap();

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool HeapFree(IntPtr hHeap, uint dwFlags, IntPtr lpMem);
    }

    public unsafe class D3D9
    {
        [StructLayout(LayoutKind.Sequential, Pack = 4)]
        public unsafe struct IDirect3D9
        {
            public IntPtr* VFTable;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 4)]
        public unsafe struct IDirect3D9Ex
        {
            public IntPtr* VFTable;
        }

        [DllImport("d3d9.dll", EntryPoint = "Direct3DCreate9", CallingConvention = CallingConvention.StdCall), System.Security.SuppressUnmanagedCodeSecurity]
        public static extern IDirect3D9* Direct3DCreate9(ushort SDKVersion);

        [DllImport("d3d9.dll", EntryPoint = "Direct3DCreate9Ex", CallingConvention = CallingConvention.StdCall), System.Security.SuppressUnmanagedCodeSecurity]
        public static extern int Direct3DCreate9Ex(ushort SDKVersion, [Out] out IDirect3D9Ex ex);
    }
}