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Added CorrespondingTypeAttribute to VARTYPE enum and GetType(VARTYPE) method to PROPVARIANT.

pull/10/head
David Hall 2018-01-22 12:18:52 -07:00
parent 4335cdaf8d
commit f4ec756799
2 changed files with 67 additions and 0 deletions
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28
PInvoke/Ole/Ole32/PropIdl.PROPVARIANT.cs
View File

@ -531,6 +531,34 @@ namespace Vanara.PInvoke
/// <value>The value type.</value>
public VarEnum VarType { get => (VarEnum)vt; set => vt = (VARTYPE)value; }
/// <summary>Gets the Type for a provided VARTYPE.</summary>
/// <param name="vt">The VARTYPE value to lookup.</param>
/// <returns>A best fit <see cref="Type"/> for the provided VARTYPE.</returns>
public static Type GetType(VARTYPE vt)
{
// Safe arrays are always pointers
if (vt.IsFlagSet(VARTYPE.VT_ARRAY)) return typeof(IntPtr);
var elemType = (VARTYPE)((int)vt & 0xFFF);
// VT_NULL is always DBNull
if (elemType == VARTYPE.VT_NULL) return typeof(DBNull);
// Get type of element, return null if VT_EMPTY or not found
var type = CorrespondingTypeAttribute.GetCorrespondingTypes(elemType).FirstOrDefault();
if (type == null || elemType == 0) return null;
// Change type if by reference
if (vt.IsFlagSet(VARTYPE.VT_BYREF))
{
type = Nullable.GetUnderlyingType(type);
if (type.IsValueType)
type = typeof(Nullable<>).MakeGenericType(type);
}
// Change type if vector
if (vt.IsFlagSet(VARTYPE.VT_VECTOR))
{
type = typeof(IEnumerable<>).MakeGenericType(type);
}
return type;
}
/// <summary>Gets the VARTYPE for a provided type.</summary>
/// <param name="type">The type to analyze.</param>
/// <returns>A best fit <see cref="VARTYPE"/> for the provided type.</returns>

39
PInvoke/Ole/Ole32/WTypes.cs
View File

@ -1,5 +1,6 @@
using System;
using System.Runtime.InteropServices;
using System.Runtime.InteropServices.ComTypes;
using Vanara.InteropServices;
// ReSharper disable InconsistentNaming
@ -117,86 +118,124 @@ namespace Vanara.PInvoke
public enum VARTYPE : ushort
{
/// <summary>Not specified.</summary>
[CorrespondingType(typeof(object))]
VT_EMPTY = 0,
/// <summary>Null.</summary>
[CorrespondingType(typeof(DBNull))]
VT_NULL = 1,
/// <summary>A 2-byte integer.</summary>
[CorrespondingType(typeof(short))]
VT_I2 = 2,
/// <summary>A 4-byte integer.</summary>
[CorrespondingType(typeof(int))]
VT_I4 = 3,
/// <summary>A 4-byte real.</summary>
[CorrespondingType(typeof(float))]
VT_R4 = 4,
/// <summary>A 8-byte real.</summary>
[CorrespondingType(typeof(double))]
VT_R8 = 5,
/// <summary>Currency</summary>
[CorrespondingType(typeof(decimal))]
VT_CY = 6,
/// <summary>A date.</summary>
[CorrespondingType(typeof(DateTime))]
VT_DATE = 7,
/// <summary>A string.</summary>
[CorrespondingType(typeof(string))]
VT_BSTR = 8,
/// <summary>An IDispatch pointer.</summary>
[CorrespondingType(typeof(object))]
VT_DISPATCH = 9,
/// <summary>An SCODE value.</summary>
[CorrespondingType(typeof(Win32Error))]
VT_ERROR = 10,
/// <summary>A Boolean value. True is -1 and false is 0.</summary>
[CorrespondingType(typeof(bool))]
VT_BOOL = 11,
/// <summary>A variant pointer.</summary>
[CorrespondingType(typeof(object))]
VT_VARIANT = 12,
/// <summary>An IUnknown pointer.</summary>
[CorrespondingType(typeof(object))]
VT_UNKNOWN = 13,
/// <summary>A 16-byte fixed-point value.</summary>
[CorrespondingType(typeof(decimal))]
VT_DECIMAL = 14,
/// <summary>A character.</summary>
[CorrespondingType(typeof(sbyte))]
VT_I1 = 16,
/// <summary>An unsigned character.</summary>
[CorrespondingType(typeof(byte))]
VT_UI1 = 17,
/// <summary>An unsigned short.</summary>
[CorrespondingType(typeof(ushort))]
VT_UI2 = 18,
/// <summary>An unsigned long.</summary>
[CorrespondingType(typeof(uint))]
VT_UI4 = 19,
/// <summary>A 64-bit integer.</summary>
[CorrespondingType(typeof(long))]
VT_I8 = 20,
/// <summary>A 64-bit unsigned integer.</summary>
[CorrespondingType(typeof(ulong))]
VT_UI8 = 21,
/// <summary>An integer.</summary>
[CorrespondingType(typeof(int))]
VT_INT = 22,
/// <summary>An unsigned integer.</summary>
[CorrespondingType(typeof(uint))]
VT_UINT = 23,
/// <summary>The vt void</summary>
[CorrespondingType(typeof(IntPtr))]
VT_VOID = 24,
/// <summary>A C-style void.</summary>
[CorrespondingType(typeof(double))]
VT_HRESULT = 25,
/// <summary>A pointer type.</summary>
[CorrespondingType(typeof(IntPtr))]
VT_PTR = 26,
/// <summary>A safe array. Use VT_ARRAY in VARIANT.</summary>
VT_SAFEARRAY = 27,
/// <summary>A C-style array.</summary>
VT_CARRAY = 28,
/// <summary>A user-defined type.</summary>
[CorrespondingType(typeof(IntPtr))]
VT_USERDEFINED = 29,
/// <summary>A null-terminated string.</summary>
[CorrespondingType(typeof(string))]
VT_LPSTR = 30,
/// <summary>A wide null-terminated string.</summary>
[CorrespondingType(typeof(string))]
VT_LPWSTR = 31,
/// <summary>A user-defined type.</summary>
[CorrespondingType(typeof(IntPtr))]
VT_RECORD = 36,
/// <summary>A FILETIME value.</summary>
[CorrespondingType(typeof(System.Runtime.InteropServices.ComTypes.FILETIME))]
VT_FILETIME = 64,
/// <summary>Length-prefixed bytes.</summary>
[CorrespondingType(typeof(BLOB))]
VT_BLOB = 65,
/// <summary>The name of the stream follows.</summary>
[CorrespondingType(typeof(IStream))]
VT_STREAM = 66,
/// <summary>The name of the storage follows.</summary>
[CorrespondingType(typeof(IStorage))]
VT_STORAGE = 67,
/// <summary>The stream contains an object.</summary>
[CorrespondingType(typeof(IStream))]
VT_STREAMED_OBJECT = 68,
/// <summary>The storage contains an object.</summary>
[CorrespondingType(typeof(IStorage))]
VT_STORED_OBJECT = 69,
/// <summary>The blob contains an object.</summary>
VT_BLOB_OBJECT = 70,
/// <summary>A clipboard format.</summary>
[CorrespondingType(typeof(CLIPDATA))]
VT_CF = 71,
/// <summary>A class ID.</summary>
[CorrespondingType(typeof(Guid))]
VT_CLSID = 72,
/// <summary>A stream with a GUID version.</summary>
VT_VERSIONED_STREAM = 73,