Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Media / Imaging / GifBitmapEncoder.cs / 1 / GifBitmapEncoder.cs
//------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation, All Rights Reserved // // File: GifBitmapEncoder.cs // //----------------------------------------------------------------------------- using System; using System.Security; using System.Security.Permissions; using System.Collections; 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.Runtime.InteropServices; using System.Windows.Media.Imaging; namespace System.Windows.Media.Imaging { #region GifBitmapEncoder ////// Built-in Encoder for Gif files. /// public sealed class GifBitmapEncoder : BitmapEncoder { #region Constructors ////// Constructor for GifBitmapEncoder /// ////// Critical - will eventuall create unmanaged resources /// PublicOK - all inputs are verified /// [SecurityCritical ] public GifBitmapEncoder() : base(true) { _supportsPreview = false; _supportsGlobalThumbnail = false; _supportsGlobalMetadata = false; _supportsFrameThumbnails = false; _supportsMultipleFrames = true; _supportsFrameMetadata = false; } #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 /// [SecurityCritical] 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 = MILGuidData.GUID_ContainerFormatGif; #endregion } #endregion // GifBitmapEncoder } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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