Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Shared / MS / Internal / Ink / Native.cs / 1305600 / Native.cs
using System; using System.Security; using System.Runtime.InteropServices; namespace MS.Internal.Ink { internal static class Native { ////// Initialize the constants /// ////// Critical: Critical as this code invokes Marshal.SizeOf which uses LinkDemand for UnmanagedCode permission. /// TreatAsSafe: The method doesn't take any user inputs. It only pre-computes the size of our internal types. /// [SecurityCritical, SecurityTreatAsSafe] static Native() { // NOTICE-2005/10/14-WAYNEZEN, // Make sure those lengths are indepentent from the 32bit or 64bit platform. Otherwise it could // break the ISF format. SizeOfInt = (uint)Marshal.SizeOf(typeof(int)); SizeOfUInt = (uint)Marshal.SizeOf(typeof(uint)); SizeOfUShort = (uint)Marshal.SizeOf(typeof(ushort)); SizeOfByte = (uint)Marshal.SizeOf(typeof(byte)); SizeOfFloat = (uint)Marshal.SizeOf(typeof(float)); SizeOfDouble = (uint)Marshal.SizeOf(typeof(double)); SizeOfGuid = (uint)Marshal.SizeOf(typeof(Guid)); SizeOfDecimal = (uint)Marshal.SizeOf(typeof(decimal)); } internal static readonly uint SizeOfInt; // Size of an int internal static readonly uint SizeOfUInt; // Size of an unsigned int internal static readonly uint SizeOfUShort; // Size of an unsigned short internal static readonly uint SizeOfByte; // Size of a byte internal static readonly uint SizeOfFloat; // Size of a float internal static readonly uint SizeOfDouble; // Size of a double internal static readonly uint SizeOfGuid; // Size of a GUID internal static readonly uint SizeOfDecimal; // Size of a VB-style Decimal internal const int BitsPerByte = 8; // number of bits in a byte internal const int BitsPerShort = 16; // number of bits in one short - 2 bytes internal const int BitsPerInt = 32; // number of bits in one integer - 4 bytes internal const int BitsPerLong = 64; // number of bits in one long - 8 bytes // since casting from floats have mantisaa components, // casts from float to int are not constrained by // Int32.MaxValue, but by the maximum float value // whose mantissa component is still within range // of an integer. Anything larger will cause an overflow. internal const int MaxFloatToIntValue = 2147483584 - 1; // 2.14748e+009 } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. using System; using System.Security; using System.Runtime.InteropServices; namespace MS.Internal.Ink { internal static class Native { ////// Initialize the constants /// ////// Critical: Critical as this code invokes Marshal.SizeOf which uses LinkDemand for UnmanagedCode permission. /// TreatAsSafe: The method doesn't take any user inputs. It only pre-computes the size of our internal types. /// [SecurityCritical, SecurityTreatAsSafe] static Native() { // NOTICE-2005/10/14-WAYNEZEN, // Make sure those lengths are indepentent from the 32bit or 64bit platform. Otherwise it could // break the ISF format. SizeOfInt = (uint)Marshal.SizeOf(typeof(int)); SizeOfUInt = (uint)Marshal.SizeOf(typeof(uint)); SizeOfUShort = (uint)Marshal.SizeOf(typeof(ushort)); SizeOfByte = (uint)Marshal.SizeOf(typeof(byte)); SizeOfFloat = (uint)Marshal.SizeOf(typeof(float)); SizeOfDouble = (uint)Marshal.SizeOf(typeof(double)); SizeOfGuid = (uint)Marshal.SizeOf(typeof(Guid)); SizeOfDecimal = (uint)Marshal.SizeOf(typeof(decimal)); } internal static readonly uint SizeOfInt; // Size of an int internal static readonly uint SizeOfUInt; // Size of an unsigned int internal static readonly uint SizeOfUShort; // Size of an unsigned short internal static readonly uint SizeOfByte; // Size of a byte internal static readonly uint SizeOfFloat; // Size of a float internal static readonly uint SizeOfDouble; // Size of a double internal static readonly uint SizeOfGuid; // Size of a GUID internal static readonly uint SizeOfDecimal; // Size of a VB-style Decimal internal const int BitsPerByte = 8; // number of bits in a byte internal const int BitsPerShort = 16; // number of bits in one short - 2 bytes internal const int BitsPerInt = 32; // number of bits in one integer - 4 bytes internal const int BitsPerLong = 64; // number of bits in one long - 8 bytes // since casting from floats have mantisaa components, // casts from float to int are not constrained by // Int32.MaxValue, but by the maximum float value // whose mantissa component is still within range // of an integer. Anything larger will cause an overflow. internal const int MaxFloatToIntValue = 2147483584 - 1; // 2.14748e+009 } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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