The Directory list box is a single-selection list box that is scrollable both horizontally and vertically.

The Directory list box displays the path in the szFullFile field of the FILEDLG data structure as a list of each parent subdirectory. Any subdirectories of the selected directory also are displayed. Each directory level is indented to show the path, and the current working directory level is indicated by an arrow. The top entry is always the root directory, with the drive specification preceding it. When the szFullFile field is NULL, the current path of the current drive is displayed. The user selects a new subdirectory by double-clicking on the subdirectory name. This action updates the Directory list box.