Ejemplo n.º 1
0
        /// <inheritdoc />
        /// <summary>
        /// Requests information about a column.
        /// By calling this repeatedly the shell can detect how many columns there are.
        /// </summary>
        /// <param name="index">The column's zero-based index. It is an arbitrary value that is used to enumerate columns (DWORD dwIndex).</param>
        /// <param name="columnInfo">Information about the column (psci).</param>
        int IColumnProvider.GetColumnInfo(int index, ref ShellColumnInfo columnInfo)
        {
            Debug.WriteLine("[{0}] ColumnProviderBase.IColumnProvider.GetColumnInfo, index={1}", Id, index);

            if (!initialized)
            {
                throw new COMException("Initialize was not called");
            }

            if (hideDesktopColumns || index >= columnInfos.Count)
            {
                return(HResults.False); // tell the shell there are no more columns.
            }
            columnInfo = columnInfos[index];
            return(HResults.Ok);
        }
Ejemplo n.º 2
0
        protected void RegisterColumn(Guid formatId, int propertyId, string title, uint defaultWidthInCharacters,
                                      ListViewAlignment format = ListViewAlignment.Left, ShellColumnState state = ShellColumnState.TypeString)
        {
            var columnId = new ShellColumnId {
                FormatId = formatId, PropertyId = propertyId
            };

            // Note: description field is not used by the shell.
            var columnInfo = new ShellColumnInfo
            {
                ColumnId = columnId,
                Title    = title,
                DefaultWidthInCharacters = defaultWidthInCharacters,
                Format      = format,
                State       = state | ShellColumnState.Extended | ShellColumnState.SecondaryUI,
                variantType = 0
            };

            // Note: VT_LPSTR/VT_BSTR works ok. Other types seems to have issues with sorting.
            // TODO = VT_BSTR

            columnInfos.Add(columnInfo);
        }
Ejemplo n.º 3
0
        protected void RegisterColumn(Guid formatId, int propertyId, string title, uint defaultWidthInCharacters,
                                      ListViewAlignment format = ListViewAlignment.Left, ShellColumnState state = ShellColumnState.TypeString)
        {
            Contract.Requires(title != null);
            Contract.Requires(title.Length < ShellColumnInfo.MaxTitleLength);

            var columnId = new ShellColumnId {
                FormatId = formatId, PropertyId = propertyId
            };

            // Note: description field is not used by the shell.
            var columnInfo = new ShellColumnInfo();

            columnInfo.ColumnId = columnId;
            columnInfo.Title    = title;
            columnInfo.DefaultWidthInCharacters = defaultWidthInCharacters;
            columnInfo.Format = format;
            columnInfo.State  = state | ShellColumnState.Extended | ShellColumnState.SecondaryUI;

            // Note: VT_LPSTR/VT_BSTR works ok. Other types seems to have issues with sorting.
            columnInfo.variantType = 0; // TODO = VT_BSTR

            columnInfos.Add(columnInfo);
        }