Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Media / Imaging / UnknownBitmapEncoder.cs / 1305600 / UnknownBitmapEncoder.cs
//------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation, All Rights Reserved // // File: UnknownBitmapEncoder.cs // //----------------------------------------------------------------------------- using System; using System.Collections; using System.Security; using System.Security.Permissions; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Reflection; using MS.Internal; using MS.Win32.PresentationCore; using System.Diagnostics; using System.Windows.Media; using System.Globalization; using System.Windows.Media.Imaging; namespace System.Windows.Media.Imaging { #region UnknownBitmapEncoder ////// Built-in Encoder for Unknown files. /// internal sealed class UnknownBitmapEncoder : BitmapEncoder { #region Constructors ////// Constructor for UnknownBitmapEncoder /// ////// Critical - will eventually create unmanaged resources based on guid /// [SecurityCritical] public UnknownBitmapEncoder(Guid containerFormat) : base(true) { _containerFormat = containerFormat; // Assume it supports everything _supportsPreview = true; _supportsGlobalThumbnail = true; _supportsGlobalMetadata = false; _supportsFrameThumbnails = true; _supportsMultipleFrames = true; _supportsFrameMetadata = true; } #endregion #region Internal Properties / Methods ////// Returns the container format for this encoder /// ////// Critical - uses guid to create unmanaged resources /// internal override Guid ContainerFormat { [SecurityCritical] get { return _containerFormat; } } ////// Setups the encoder and other properties before encoding each frame /// ////// Critical - Accesses unmanaged code /// TreatAsSafe - All parameters passed in are safe (null, 0 and safehandle) /// [SecurityCritical, SecurityTreatAsSafe] internal override void SetupFrame(SafeMILHandle frameEncodeHandle, SafeMILHandle encoderOptions) { HRESULT.Check(UnsafeNativeMethods.WICBitmapFrameEncode.Initialize( frameEncodeHandle, encoderOptions )); } #endregion #region Internal Abstract /// Need to implement this to derive from the "sealed" object internal override void SealObject() { throw new NotImplementedException(); } #endregion #region Data Members ////// Critical - CLSID used for creation of critical resources /// [SecurityCritical] private Guid _containerFormat; #endregion } #endregion // UnknownBitmapEncoder } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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