ZuneShell.dll/Microsoft/Zune/MemoryFonts.cs

// Decompiled with JetBrains decompiler
// Type: Microsoft.Zune.MemoryFonts
// Assembly: ZuneShell, Version=4.7.0.0, Culture=neutral, PublicKeyToken=ddd0da4d3e678217
// MVID: FC8028F3-A47B-4FB4-B35B-11D1752D8264
// Assembly location: C:\Program Files\Zune\ZuneShell.dll

using System;
using System.Runtime.InteropServices;

namespace Microsoft.Zune
{
    internal class MemoryFonts
    {
        public const uint LOAD_LIBRARY_AS_DATAFILE = 2;
        public const int RT_DATA = 10;

        public static bool TryLoadFromResource(string resourceDllName, string fontResourceName)
        {
            IntPtr instanceHandle = IntPtr.Zero;
            try
            {
                instanceHandle = LoadLibraryEx(resourceDllName, IntPtr.Zero, 2U);
                if (instanceHandle == IntPtr.Zero)
                    return false;
                IntPtr resource = FindResource(instanceHandle, fontResourceName, (IntPtr)10);
                if (resource == IntPtr.Zero)
                    return false;
                IntPtr resourceHandle = LoadResource(instanceHandle, resource);
                return !(resourceHandle == IntPtr.Zero) && !(AddFontMemResourceEx(LockResource(resourceHandle), SizeofResource(instanceHandle, resource), IntPtr.Zero, out uint _) == IntPtr.Zero);
            }
            finally
            {
                if (instanceHandle != IntPtr.Zero)
                    FreeLibrary(instanceHandle);
            }
        }

        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr LoadLibraryEx(string moduleName, IntPtr reserved, uint flags);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern bool FreeLibrary(IntPtr instanceHandle);

        [DllImport("kernel32.dll", EntryPoint = "FindResourceW", CharSet = CharSet.Unicode)]
        public static extern IntPtr FindResource(
          IntPtr instanceHandle,
          string resource,
          IntPtr type);

        [DllImport("kernel32.dll")]
        public static extern IntPtr LoadResource(IntPtr instanceHandle, IntPtr resourceHandle);

        [DllImport("kernel32.dll")]
        public static extern int SizeofResource(IntPtr instanceHandle, IntPtr resourceHandle);

        [DllImport("kernel32.dll")]
        public static extern IntPtr LockResource(IntPtr resourceHandle);

        [DllImport("gdi32.dll")]
        public static extern IntPtr AddFontMemResourceEx(
          IntPtr fontBuffer,
          int fontButtonSize,
          IntPtr reserved,
          out uint fontsInstalled);
    }
}