public object MarshalNativeToManaged(IntPtr pNativeData)
{
if ((IntPtr.Zero == pNativeData) || (null == propVariantReference))
{
return(null);
}
UnmanagedPropVariant unmanagedPropVariant = new UnmanagedPropVariant();
Marshal.PtrToStructure(pNativeData, unmanagedPropVariant);
if ((0 == (unmanagedPropVariant.vt & (ushort)VarEnum.VT_VECTOR)) && (unmanagedPropVariant.vt != (ushort)VarEnum.VT_BLOB))
{
switch ((VarEnum)unmanagedPropVariant.vt)
{
case VarEnum.VT_CLSID:
{
if (unmanagedPropVariant.vectorValue.ptr != IntPtr.Zero)
{
propVariantReference.value = To <Guid>(unmanagedPropVariant.vectorValue.ptr);
}
return(null);
}
case VarEnum.VT_EMPTY:
{
propVariantReference.value = null;
propVariantReference.marshalType = PropVariantMarshalType.Automatic;
return(null);
}
case VarEnum.VT_LPSTR:
{
propVariantReference.value = Marshal.PtrToStringAnsi(unmanagedPropVariant.pointerValue);
propVariantReference.marshalType = PropVariantMarshalType.Ascii;
return(null);
}
case VarEnum.VT_LPWSTR:
{
propVariantReference.value = Marshal.PtrToStringUni(unmanagedPropVariant.pointerValue);
propVariantReference.marshalType = PropVariantMarshalType.Automatic;
return(null);
}
case VarEnum.VT_FILETIME:
{
propVariantReference.value = DateTime.FromFileTimeUtc(unmanagedPropVariant.int64Value);
propVariantReference.marshalType = PropVariantMarshalType.Automatic;
return(null);
}
default:
{
propVariantReference.value = Marshal.GetObjectForNativeVariant(pNativeData);
propVariantReference.marshalType = PropVariantMarshalType.Automatic;
return(null);
}
}
}
else
{
VarEnum elementVt = (VarEnum)(unmanagedPropVariant.vt & ~(ushort)VarEnum.VT_VECTOR);
int count = (int)unmanagedPropVariant.vectorValue.count;
propVariantReference.marshalType = PropVariantMarshalType.Automatic;
switch (elementVt)
{
case VarEnum.VT_BLOB:
propVariantReference.marshalType = PropVariantMarshalType.Blob;
propVariantReference.value = ToArrayOf <byte>(unmanagedPropVariant.vectorValue.ptr, count);;
break;
case VarEnum.VT_I1:
propVariantReference.value = ToArrayOf <sbyte>(unmanagedPropVariant.vectorValue.ptr, count);
break;
case VarEnum.VT_UI1:
propVariantReference.value = ToArrayOf <byte>(unmanagedPropVariant.vectorValue.ptr, count);
break;
case VarEnum.VT_I2:
propVariantReference.value = ToArrayOf <short>(unmanagedPropVariant.vectorValue.ptr, count);
break;
case VarEnum.VT_UI2:
propVariantReference.value = ToArrayOf <ushort>(unmanagedPropVariant.vectorValue.ptr, count);
break;
case VarEnum.VT_I4:
propVariantReference.value = ToArrayOf <int>(unmanagedPropVariant.vectorValue.ptr, count);
break;
case VarEnum.VT_UI4:
propVariantReference.value = ToArrayOf <uint>(unmanagedPropVariant.vectorValue.ptr, count);
break;
case VarEnum.VT_R4:
propVariantReference.value = ToArrayOf <float>(unmanagedPropVariant.vectorValue.ptr, count);
break;
case VarEnum.VT_UI8:
propVariantReference.value = ToArrayOf <ulong>(unmanagedPropVariant.vectorValue.ptr, count);
break;
case VarEnum.VT_I8:
propVariantReference.value = ToArrayOf <long>(unmanagedPropVariant.vectorValue.ptr, count);
break;
case VarEnum.VT_R8:
propVariantReference.value = ToArrayOf <double>(unmanagedPropVariant.vectorValue.ptr, count);
break;
case VarEnum.VT_LPWSTR:
propVariantReference.marshalType = PropVariantMarshalType.Automatic;
propVariantReference.value = GetArrayOfStrings(unmanagedPropVariant.vectorValue.ptr, count, Marshal.PtrToStringUni);
break;
case VarEnum.VT_LPSTR:
propVariantReference.marshalType = PropVariantMarshalType.Ascii;
propVariantReference.value = GetArrayOfStrings(unmanagedPropVariant.vectorValue.ptr, count, Marshal.PtrToStringAnsi);
break;
default: throw new NotImplementedException();
}
return(null);
}
}
public IntPtr MarshalManagedToNative(object obj)
{
if (null == obj)
{
return(IntPtr.Zero);
}
PropVariantMarshalType marshalType = PropVariantMarshalType.Automatic;
if (obj is PropVariant)
{
propVariantReference = (PropVariant)obj;
obj = propVariantReference.Value;
marshalType = propVariantReference.MarshalType;
}
IntPtr pNativeData = AllocatePropVariant();
if (null == obj)
{
}
else if (!(obj is Array))
{
if (marshalType == PropVariantMarshalType.Ascii)
{
UnmanagedPropVariant upv = new UnmanagedPropVariant();
upv.vt = (ushort)VarEnum.VT_LPSTR;
upv.pointerValue = Marshal.StringToCoTaskMemAnsi((string)obj);
Marshal.StructureToPtr(upv, pNativeData, false);
}
else if (obj is DateTime)
{
UnmanagedPropVariant upv = new UnmanagedPropVariant();
upv.vt = (ushort)VarEnum.VT_FILETIME;
upv.int64Value = ((DateTime)obj).ToFileTimeUtc();
Marshal.StructureToPtr(upv, pNativeData, false);
}
else if (obj is string)
{
UnmanagedPropVariant upv = new UnmanagedPropVariant();
upv.vt = (ushort)VarEnum.VT_LPWSTR;
upv.pointerValue = Marshal.StringToCoTaskMemUni((string)obj);
Marshal.StructureToPtr(upv, pNativeData, false);
}
else
{
Marshal.GetNativeVariantForObject(obj, pNativeData);
}
}
else if ((obj.GetType().Equals(typeof(byte[]))) || (obj.GetType().Equals(typeof(sbyte[]))) ||
(obj.GetType().Equals(typeof(Int16[]))) || (obj.GetType().Equals(typeof(UInt16[]))) ||
(obj.GetType().Equals(typeof(Int32[]))) || (obj.GetType().Equals(typeof(UInt32[]))) ||
(obj.GetType().Equals(typeof(Int64[]))) || (obj.GetType().Equals(typeof(UInt64[]))) ||
(obj.GetType().Equals(typeof(float[]))) || (obj.GetType().Equals(typeof(double[]))))
{
int count = ((Array)obj).Length;
int elementSize = Marshal.SizeOf(obj.GetType().GetElementType());
IntPtr pNativeBuffer = Marshal.AllocCoTaskMem(elementSize * count);
for (int i = 0; i < count; i++)
{
IntPtr pNativeValue = Marshal.UnsafeAddrOfPinnedArrayElement((Array)obj, i);
for (int j = 0; j < elementSize; j++)
{
byte value = Marshal.ReadByte(pNativeValue, j);
Marshal.WriteByte(pNativeBuffer, j + i * elementSize, value);
}
}
UnmanagedPropVariant upv = new UnmanagedPropVariant();
upv.vectorValue.count = (uint)count;
upv.vectorValue.ptr = pNativeBuffer;
if (null == propVariantReference)
{
upv.vt = (ushort)(new PropVariant(obj)).GetUnmanagedType();
}
else
{
upv.vt = (ushort)propVariantReference.GetUnmanagedType();
}
Marshal.StructureToPtr(upv, pNativeData, false);
}
else if (obj.GetType().Equals(typeof(string[])))
{
int count = ((Array)obj).Length;
IntPtr pNativeBuffer = Marshal.AllocCoTaskMem(IntPtr.Size * count);
for (int i = 0; i < count; i++)
{
IntPtr strPtr = Marshal.StringToCoTaskMemUni(((string[])obj)[i]);
Marshal.WriteIntPtr(pNativeBuffer, IntPtr.Size * i, strPtr);
}
UnmanagedPropVariant upv = new UnmanagedPropVariant();
upv.vectorValue.count = (uint)count;
upv.vectorValue.ptr = pNativeBuffer;
if (null == propVariantReference)
{
upv.vt = (ushort)(new PropVariant(obj)).GetUnmanagedType();
}
else
{
upv.vt = (ushort)propVariantReference.GetUnmanagedType();
}
Marshal.StructureToPtr(upv, pNativeData, false);
}
else
{
throw new NotImplementedException();
}
return(pNativeData);
}