C# (CSharp) BExplorer.Shell.Interop PropVariantNativeMethods.SafeArrayUnaccessData Examples

SafeArrayUnaccessData() private method

private SafeArrayUnaccessData ( IntPtr psa ) : void
psa	System.IntPtr
return	void

Example #1

        /// <summary>
        /// Set a safe array value
        /// </summary>
        /// <param name="array">The new value to set.</param>
        internal void SetSafeArray(Array array)
        {
            if (array == null)
            {
                throw new ArgumentNullException("array");
            }
            const ushort vtUnknown = 13;
            IntPtr       psa       = PropVariantNativeMethods.SafeArrayCreateVector(vtUnknown, 0, (uint)array.Length);

            IntPtr pvData = PropVariantNativeMethods.SafeArrayAccessData(psa);

            try             // to remember to release lock on data
            {
                for (int i = 0; i < array.Length; ++i)
                {
                    object obj  = array.GetValue(i);
                    IntPtr punk = (obj != null) ? Marshal.GetIUnknownForObject(obj) : IntPtr.Zero;
                    Marshal.WriteIntPtr(pvData, i * IntPtr.Size, punk);
                }
            }
            finally
            {
                PropVariantNativeMethods.SafeArrayUnaccessData(psa);
            }

            _valueType = (ushort)VarEnum.VT_ARRAY | (ushort)VarEnum.VT_UNKNOWN;
            _ptr       = psa;
        }