/// <summary>
/// Load manifest to enable registry-free COM context.
/// </summary>
public void ActivateContext()
{
if (cookie != IntPtr.Zero || hActCtx != IntPtr.Zero)
{
return;
}
ActivationContextNativeMethods.ACTCTX context = new ActivationContextNativeMethods.ACTCTX();
context.cbSize = Marshal.SizeOf(typeof(ActivationContextNativeMethods.ACTCTX));
context.lpSource = this.manifestFilePath;
hActCtx = ActivationContextNativeMethods.CreateActCtx(ref context);
if (hActCtx == (IntPtr)(-1))
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "Fail to create registry-free COM context");
}
if (!ActivationContextNativeMethods.ActivateActCtx(hActCtx, out cookie))
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "Fail to activate registry-free COM context");
}
}
/// <summary>
/// Disable registry-free COM context.
/// </summary>
private void DeactivateContext()
{
if (cookie == IntPtr.Zero && hActCtx == IntPtr.Zero)
{
return;
}
try
{
ActivationContextNativeMethods.DeactivateActCtx(0, cookie);
ActivationContextNativeMethods.ReleaseActCtx(hActCtx);
cookie = IntPtr.Zero;
hActCtx = IntPtr.Zero;
}
catch (Exception ex)
{
// Log any exceptions during deactivation.
if (EqtTrace.IsErrorEnabled)
{
EqtTrace.Error(ex);
}
}
}