Ejemplo n.º 1
0
        private static bool EnsureActivateContextCreated()
        {
            lock (_contextCreationLock)
            {
                if (_contextCreationSucceeded)
                {
                    return(_contextCreationSucceeded);
                }

                const string manifestResourceName = "Ookii.Dialogs.XPThemes.manifest";
                string       manifestTempFilePath;

                using (var manifest = typeof(ComCtlv6ActivationContext).Assembly.GetManifestResourceStream(manifestResourceName))
                {
                    if (manifest is null)
                    {
                        throw new InvalidOperationException($"Unable to retrieve {manifestResourceName} embedded resource");
                    }

                    manifestTempFilePath = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());

                    using (var tempFileStream = new FileStream(manifestTempFilePath, FileMode.CreateNew, FileAccess.ReadWrite,
                                                               FileShare.Delete | FileShare.ReadWrite))
                    {
                        manifest.CopyTo(tempFileStream);
                    }
                }

                _enableThemingActivationContext = new NativeMethods.ACTCTX
                {
                    cbSize   = Marshal.SizeOf(typeof(NativeMethods.ACTCTX)),
                    lpSource = manifestTempFilePath,
                };

                // Note this will fail gracefully if file specified
                // by manifestFilePath doesn't exist.
                _activationContext        = NativeMethods.CreateActCtx(ref _enableThemingActivationContext);
                _contextCreationSucceeded = !_activationContext.IsInvalid;

                try
                {
                    File.Delete(manifestTempFilePath);
                }
                catch (Exception)
                {
                    // We tried to be tidy but something blocked us :(
                }

                // If we return false, we'll try again on the next call into
                // EnsureActivateContextCreated(), which is fine.
                return(_contextCreationSucceeded);
            }
        }
Ejemplo n.º 2
0
        private static bool EnsureActivateContextCreated()
        {
            lock (_contextCreationLock)
            {
                if (!_contextCreationSucceeded)
                {
                    // Pull manifest from the .NET Framework install
                    // directory

                    string assemblyLoc = null;

                    assemblyLoc = typeof(Object).Assembly.Location;

                    string manifestLoc = null;
                    string installDir  = null;
                    if (assemblyLoc != null)
                    {
                        installDir = Path.GetDirectoryName(assemblyLoc);
                        const string manifestName = "XPThemes.manifest";
                        manifestLoc = Path.Combine(installDir, manifestName);
                    }

                    if (manifestLoc != null && installDir != null)
                    {
                        _enableThemingActivationContext          = new NativeMethods.ACTCTX();
                        _enableThemingActivationContext.cbSize   = Marshal.SizeOf(typeof(NativeMethods.ACTCTX));
                        _enableThemingActivationContext.lpSource = manifestLoc;

                        // Set the lpAssemblyDirectory to the install
                        // directory to prevent Win32 Side by Side from
                        // looking for comctl32 in the application
                        // directory, which could cause a bogus dll to be
                        // placed there and open a security hole.
                        _enableThemingActivationContext.lpAssemblyDirectory = installDir;
                        _enableThemingActivationContext.dwFlags             = NativeMethods.ACTCTX_FLAG_ASSEMBLY_DIRECTORY_VALID;

                        // Note this will fail gracefully if file specified
                        // by manifestLoc doesn't exist.
                        _activationContext        = NativeMethods.CreateActCtx(ref _enableThemingActivationContext);
                        _contextCreationSucceeded = !_activationContext.IsInvalid;
                    }
                }

                // If we return false, we'll try again on the next call into
                // EnsureActivateContextCreated(), which is fine.
                return(_contextCreationSucceeded);
            }
        }
Ejemplo n.º 3
0
 public extern static bool ActivateActCtx(ActivationContextSafeHandle hActCtx, out IntPtr lpCookie);
Ejemplo n.º 4
0
 public extern static bool ActivateActCtx(ActivationContextSafeHandle hActCtx, out IntPtr lpCookie);
        private static bool EnsureActivateContextCreated()
        {
            lock( _contextCreationLock )
            {
                if( !_contextCreationSucceeded )
                {
                    // Pull manifest from the .NET Framework install
                    // directory

                    string assemblyLoc = null;

                    assemblyLoc = typeof(Object).Assembly.Location;

                    string manifestLoc = null;
                    string installDir = null;
                    if( assemblyLoc != null )
                    {
                        installDir = Path.GetDirectoryName(assemblyLoc);
                        const string manifestName = "XPThemes.manifest";
                        manifestLoc = Path.Combine(installDir, manifestName);
                    }

                    if( manifestLoc != null && installDir != null )
                    {
                        _enableThemingActivationContext = new NativeMethods.ACTCTX();
                        _enableThemingActivationContext.cbSize = Marshal.SizeOf(typeof(NativeMethods.ACTCTX));
                        _enableThemingActivationContext.lpSource = manifestLoc;

                        // Set the lpAssemblyDirectory to the install
                        // directory to prevent Win32 Side by Side from
                        // looking for comctl32 in the application
                        // directory, which could cause a bogus dll to be
                        // placed there and open a security hole.
                        _enableThemingActivationContext.lpAssemblyDirectory = installDir;
                        _enableThemingActivationContext.dwFlags = NativeMethods.ACTCTX_FLAG_ASSEMBLY_DIRECTORY_VALID;

                        // Note this will fail gracefully if file specified
                        // by manifestLoc doesn't exist.
                        _activationContext = NativeMethods.CreateActCtx(ref _enableThemingActivationContext);
                        _contextCreationSucceeded = !_activationContext.IsInvalid;
                    }
                }

                // If we return false, we'll try again on the next call into
                // EnsureActivateContextCreated(), which is fine.
                return _contextCreationSucceeded;
            }
        }