95 lines
2.4 KiB
C#
95 lines
2.4 KiB
C#
/*
|
|
Copyright (C) 2012 Jeroen Frijters
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it
|
|
freely, subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you must not
|
|
claim that you wrote the original software. If you use this software
|
|
in a product, an acknowledgment in the product documentation would be
|
|
appreciated but is not required.
|
|
2. Altered source versions must be plainly marked as such, and must not be
|
|
misrepresented as being the original software.
|
|
3. This notice may not be removed or altered from any source distribution.
|
|
|
|
Jeroen Frijters
|
|
jeroen@frijters.net
|
|
|
|
*/
|
|
using System;
|
|
using System.IO;
|
|
using System.Threading;
|
|
using System.Runtime.InteropServices;
|
|
using System.Security;
|
|
|
|
sealed class ThemingActivationContext : IDisposable
|
|
{
|
|
private IntPtr cookie;
|
|
|
|
[SecurityCritical]
|
|
public ThemingActivationContext()
|
|
{
|
|
if (Context.hActCtx != IntPtr.Zero)
|
|
{
|
|
IntPtr tmp;
|
|
if (ActivateActCtx(Context.hActCtx, out tmp))
|
|
{
|
|
cookie = tmp;
|
|
}
|
|
}
|
|
}
|
|
|
|
[SecuritySafeCritical]
|
|
public void Dispose()
|
|
{
|
|
IntPtr tmp = Interlocked.Exchange(ref cookie, IntPtr.Zero);
|
|
if (tmp != IntPtr.Zero)
|
|
{
|
|
DeactivateActCtx(0, tmp);
|
|
}
|
|
}
|
|
|
|
static class Context
|
|
{
|
|
internal static readonly IntPtr hActCtx;
|
|
|
|
[SecurityCritical]
|
|
static Context()
|
|
{
|
|
ACTCTX actctx = new ACTCTX();
|
|
actctx.cbSize = Marshal.SizeOf(typeof(ACTCTX));
|
|
actctx.lpSource = Path.Combine(RuntimeEnvironment.GetRuntimeDirectory(), "XPThemes.manifest");
|
|
IntPtr handle = CreateActCtx(ref actctx);
|
|
if (handle != new IntPtr(-1))
|
|
{
|
|
hActCtx = handle;
|
|
}
|
|
}
|
|
|
|
struct ACTCTX
|
|
{
|
|
internal int cbSize;
|
|
internal uint dwFlags;
|
|
internal string lpSource;
|
|
internal ushort wProcessorArchitecture;
|
|
internal ushort wLangId;
|
|
internal string lpAssemblyDirectory;
|
|
internal string lpResourceName;
|
|
internal string lpApplicationName;
|
|
}
|
|
|
|
[DllImport("kernel32.dll")]
|
|
extern static IntPtr CreateActCtx(ref ACTCTX actctx);
|
|
}
|
|
|
|
[DllImport("kernel32.dll")]
|
|
extern static bool ActivateActCtx(IntPtr hActCtx, out IntPtr lpCookie);
|
|
[DllImport("kernel32.dll")]
|
|
extern static bool DeactivateActCtx(uint dwFlags, IntPtr lpCookie);
|
|
}
|