Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Documents / InputScopeAttribute.cs / 1305600 / InputScopeAttribute.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: InputScopeAttribute is an image object that links IOleDataObject. // // History: // 10/02/2003 : yutakas // //--------------------------------------------------------------------------- using System; using System.Security; using System.Security.Permissions; using System.Runtime.InteropServices; using System.Windows.Threading; using System.Diagnostics; using System.Windows.Media; using System.Windows.Input; using System.Windows.Documents; using System.Windows.Controls; using MS.Win32; namespace System.Windows.Documents { // // InputScopeAttribute is Image object that links IOleDataObject, which // is insterted by ITextStoreACP::InsertEmbedded(). // internal class InputScopeAttribute : UnsafeNativeMethods.ITfInputScope { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors // Creates a new InputScopeAttribute instance. internal InputScopeAttribute(InputScope inputscope) { _inputScope= inputscope; } #endregion Constructors //------------------------------------------------------ // // Internal Methods // //----------------------------------------------------- #region Internal Methods // A method of ITfInputScope. // This returns InputScopes in the array that is allocated by CoTaskMemAlloc. ////// Critical - it satisfies Marshal.* LinkDemands for unmanaged code permissions. handles out a valid pointer to unmanaged memory. /// [SecurityCritical] public void GetInputScopes(out IntPtr ppinputscopes, out int count) { if (_inputScope != null) { int offset = 0; count = _inputScope.Names.Count; try { ppinputscopes = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(Int32)) * count); } catch (OutOfMemoryException) { throw new COMException(SR.Get(SRID.InputScopeAttribute_E_OUTOFMEMORY), NativeMethods.E_OUTOFMEMORY); } for (int i = 0; i < count; i++) { Marshal.WriteInt32(ppinputscopes, offset, (Int32)((InputScopeName)_inputScope.Names[i]).NameValue); offset += Marshal.SizeOf(typeof(Int32)); } } else { ppinputscopes = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(Int32)) * 1); Marshal.WriteInt32(ppinputscopes, (Int32)InputScopeNameValue.Default); count = 1; } } // A method of ITfInputScope. // This returns BSTRs in the array that is allocated by CoTaskMemAlloc. ////// Critical - it satisfies Marshal.AllocCoTaskMem() LinkDemand for unmanaged code permissions. handles out a valid pointer to unmanaged memory. /// [SecurityCritical] public int GetPhrase(out IntPtr ppbstrPhrases, out int count) { count = _inputScope == null ? 0 : _inputScope.PhraseList.Count; try { ppbstrPhrases = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(IntPtr))*count); } catch (OutOfMemoryException) { throw new COMException(SR.Get(SRID.InputScopeAttribute_E_OUTOFMEMORY), NativeMethods.E_OUTOFMEMORY); } int offset = 0; for(int i=0; i0 ? NativeMethods.S_OK : NativeMethods.S_FALSE; } // A method of ITfInputScope. public int GetRegularExpression(out string desc) { desc = null; if (_inputScope != null) { desc = _inputScope.RegularExpression; } return desc != null ? NativeMethods.S_OK : NativeMethods.S_FALSE; } // A method of ITfInputScope. public int GetSRGC(out string desc) { desc = null; if (_inputScope != null) { desc = _inputScope.SrgsMarkup; } return desc != null ? NativeMethods.S_OK : NativeMethods.S_FALSE; } // A method of ITfInputScope. public int GetXML(out string desc) { desc = null; return NativeMethods.S_FALSE; } #endregion Internal Methods //------------------------------------------------------ // // Internal Properties // //------------------------------------------------------ #region Internal Properties #endregion Internal Properties //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields // InputScope value for this instance for ITfInputScope. private InputScope _inputScope; #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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