C# UnmanagedType类代码示例

 private UnmanagedMarshal(UnmanagedType unmanagedType, Guid guid, int numElem, UnmanagedType type)
 {
     this.m_unmanagedType = unmanagedType;
     this.m_guid = guid;
     this.m_numElem = numElem;
     this.m_baseType = type;
 }

 public static UnmanagedMarshal DefineUnmanagedMarshal(UnmanagedType unmanagedType)
 {
     if (((unmanagedType == UnmanagedType.ByValTStr) || (unmanagedType == UnmanagedType.SafeArray)) || (((unmanagedType == UnmanagedType.CustomMarshaler) || (unmanagedType == UnmanagedType.ByValArray)) || (unmanagedType == UnmanagedType.LPArray)))
     {
         throw new ArgumentException(Environment.GetResourceString("Argument_NotASimpleNativeType"));
     }
     return new UnmanagedMarshal(unmanagedType, Guid.Empty, 0, (UnmanagedType) 0);
 }

	public static int Main ()
	{
		UnmanagedType = (UnmanagedType) 0;

		if (UnmanagedType != 0)
			return 1;

		return 0;
	}

        private static CustomAttributeBuilder GetMarshalAsAttribute(UnmanagedType unmanagedType)
        {
            Type[] ctorParams = new Type[] { typeof(UnmanagedType) };
            ConstructorInfo classCtorInfo = typeof(MarshalAsAttribute).GetConstructor(ctorParams);

            CustomAttributeBuilder builder = new CustomAttributeBuilder(
                                classCtorInfo,
                                new object[] { unmanagedType });
            return builder;
        }

 internal static void GetMarshalAs(ConstArray nativeType, out UnmanagedType unmanagedType, out VarEnum safeArraySubType, out string safeArrayUserDefinedSubType, out UnmanagedType arraySubType, out int sizeParamIndex, out int sizeConst, out string marshalType, out string marshalCookie, out int iidParamIndex)
 {
     int num;
     int num2;
     int num3;
     _GetMarshalAs(nativeType.Signature, nativeType.Length, out num, out num2, out safeArrayUserDefinedSubType, out num3, out sizeParamIndex, out sizeConst, out marshalType, out marshalCookie, out iidParamIndex);
     unmanagedType = (UnmanagedType) num;
     safeArraySubType = (VarEnum) num2;
     arraySubType = (UnmanagedType) num3;
 }

        /******************************
[System.Runtime.InteropServices.ComVisible(true)]
        * public static constructors. You can only construct
        * UnmanagedMarshal using these static constructors. 
        ******************************/
        public static UnmanagedMarshal DefineUnmanagedMarshal(UnmanagedType unmanagedType) 
        { 
            if (unmanagedType == UnmanagedType.ByValTStr ||
#if FEATURE_COMINTEROP 
                unmanagedType == UnmanagedType.SafeArray ||
                unmanagedType == UnmanagedType.CustomMarshaler ||
#endif //FEATURE_COMINTEROP
                unmanagedType == UnmanagedType.ByValArray || 
                unmanagedType == UnmanagedType.LPArray)
            { 
                // not a simple native marshal 
                throw new ArgumentException(Environment.GetResourceString("Argument_NotASimpleNativeType"));
            } 
            return new UnmanagedMarshal(unmanagedType, Guid.Empty, 0, (UnmanagedType) 0);
        }

    private int Verify(UnmanagedType umt, int expectedValue)
    {
        Console.WriteLine("Verify " + umt);
        try
        {
            if (expectedValue == (int)umt)
                return 0;

            Console.WriteLine("Error! Actual: {0}, Expected: {1}", (int)umt, expectedValue);
        }
        catch (Exception e)
        {
            Console.WriteLine("UnexpectedEception: " + e);
        }
        return 1;
    }

		public static Type GetUnmanagedType(UnmanagedType type)
		{
			switch (type)
			{
				case UnmanagedType.I1: return typeof(bool);
				case UnmanagedType.U1: return typeof(bool);
				case UnmanagedType.I2: return typeof(short);
				case UnmanagedType.I4: return typeof(int);
				case UnmanagedType.I8: return typeof(long);
				case UnmanagedType.R4: return typeof(float);
				case UnmanagedType.R8: return typeof(double);
				case UnmanagedType.Currency: return typeof(double);
				case UnmanagedType.ByValTStr: return typeof(char);
				default: throw new NotImplementedException();
			}
		}

 public static UnmanagedMarshal DefineSafeArray(UnmanagedType elemType)
 {
     return new UnmanagedMarshal(UnmanagedType.SafeArray, Guid.Empty, 0, elemType);
 }

        [System.Security.SecurityCritical]  // auto-generated
        internal static void GetMarshalAs(ConstArray nativeType, 
            out UnmanagedType unmanagedType, out VarEnum safeArraySubType, out string safeArrayUserDefinedSubType, 
            out UnmanagedType arraySubType, out int sizeParamIndex, out int sizeConst, out string marshalType, out string marshalCookie,
            out int iidParamIndex)
        {
            int _unmanagedType, _safeArraySubType, _arraySubType;

            _GetMarshalAs(nativeType.Signature, (int)nativeType.Length,
                out _unmanagedType, out _safeArraySubType, out safeArrayUserDefinedSubType, 
                out _arraySubType, out sizeParamIndex, out sizeConst, out marshalType, out marshalCookie,
                out iidParamIndex);
            unmanagedType = (UnmanagedType)_unmanagedType;
            safeArraySubType = (VarEnum)_safeArraySubType;
            arraySubType = (UnmanagedType)_arraySubType;
        }

	// Define a simple unmanaged marshalling behaviour.
	public static UnmanagedMarshal DefineUnmanagedMarshal
				(UnmanagedType unmanagedType)
			{
				// Must be a simple unmanaged type.
				if(unmanagedType == UnmanagedType.ByValArray ||
				   unmanagedType == UnmanagedType.ByValTStr ||
				   unmanagedType == UnmanagedType.LPArray ||
				   unmanagedType == UnmanagedType.SafeArray ||
				   unmanagedType == UnmanagedType.CustomMarshaler)
				{
					throw new ArgumentException
						(_("Emit_NotSimpleUnmanagedType"));
				}
				return new UnmanagedMarshal(unmanagedType);
			}

#pragma warning restore 169, 414
		
		private UnmanagedMarshal (UnmanagedType maint, int cnt) {
			count = cnt;
			t = maint;
			tbase = maint;
		}

		public static UnmanagedMarshal DefineLPArray( UnmanagedType elemType) {
			return new UnmanagedMarshal (UnmanagedType.LPArray, elemType);
		}

 public static TypeName GetTypeNameForUnmanagedType(UnmanagedType unmngType)
 {
     return primitiveUnmanagedToNameMap[(int)unmngType];
 }

            private static CharSet? MarshalingToCharSet(UnmanagedType? type)
            {
                if (type == null)
                {
                    return null;
                }

                switch (type)
                {
                    case UnmanagedType.AnsiBStr:
                    case UnmanagedType.LPStr:
                    case UnmanagedType.VBByRefStr:
                        return CharSet.Ansi;
                    case UnmanagedType.BStr:
                    case UnmanagedType.LPWStr:
                        return CharSet.Unicode;
                    case UnmanagedType.ByValTStr:
                    case UnmanagedType.LPTStr:
                    case UnmanagedType.TBStr:
                        return CharSet.Auto;
                    default:
                        return CharSet.None;
                }
            }