参考一下，uitree.m文件

function [tree, container] = uitree(varargin)

% This function is undocumented and will change in a future release

% UITREE creates a uitree component with hierarchical data in a figure window.

%   UITREE creates an empty uitree object with default property values in

%   a figure window.

%

%   UITREE('v0', 'PropertyName1', 'Value1', 'PropertyName2', 'Value2', ...)

%   creates a uitree object with the specified properties. The properties

%   that can be set are: Root, ExpandFcn, SelectionChangeFcn, Parent and

%   Position. The 'Root' property must be specified to successfully to

%   create a uitree. The other properties are optional.

%

%   UITREE('v0', figurehandle, ...) creates a uitree object in the figure

%   window specified by the figurehandle.

%

%   HANDLE = UITREE('v0', ...) creates a uitree object and returns its handle.

%

%   Properties:

%

%   Root - Root node for the uitree object. Could be handle to a HG

%   object, a string, an open block diagram name, or handle to a

%   UITREENODE object.

%   ExpandFcn - Node expansion function. String or function handle.

%   SelectionChangeFcn - Selection callback function. String or function

%   handle.

%   Parent - Parent figure handle. If not specified, it is the gcf.

%   Position: 4 element vector specifying the position.

%

%   DndEnabled: Boolean specifying if drag and drop is enabled (false).

%   MultipleSelectionEnabled: Boolean specifying if multiple selection is

%   allowed (false).

%   SelectedNodes: vector of uitreenodes to be selected.

%   Units: String - pixels/normalized/inches/points/centimeters.

%   Visible: Boolean specifying if table is visible.

%   NodeDroppedCallback: Callback for a drag and drop action.

%   NodeExpandedCallback: Callback for a node expand action.

%   NodeCollapsedCallback: Callback function for a node collapse action.

%   NodeSelectedCallback: Callback for a node selection action.

%

%

%   Examples:

%           t = uitree('v0', 'Root', 'D:\')

%

%       %Creates a uitree widget in a figure window with which acts as a

%       %directory browser with the D: drive as the root node.

%

%           surf(peaks)

%           f = figure

%           t = uitree('v0', f, 'Root', 0)

%

%       %Creates a uitree object in the specified figure window which acts as

%       %a MATLAB hierarchy browser with the MATLAB root (0) as the root node.

%

%           root = uitreenode('v0', 'S:\', 'S', [], false);

%           t = uitree('v0', 'Root', root, 'ExpandFcn', @myExpfcn, ...

%                     'SelectionChangeFcn', 'disp(''Selection Changed'')');

%

%       %Creates a uitree object with the specified root node and a custom

%       %function to return child nodes for any given node. The function

%       %myExpfcn is an m-file in the MATLAB path with the following code:

%

%       %This function should be added to your path

%       % ---------------------------------------------

%       function nodes = myExpfcn(tree, value)

%

%       try

%           count = 0;

%           ch = dir(value);

%

%           for i=1:length(ch)

%               if (any(strcmp(ch(i).name, {'.', '..', ''})) == 0)

%                   count = count + 1;

%                   if ch(i).isdir

%                       iconpath = [matlabroot, '/toolbox/matlab/icons/foldericon.gif'];

%                   else

%                       iconpath = [matlabroot, '/toolbox/matlab/icons/pageicon.gif'];

%                   end

%                   nodes(count) = uitreenode([value, ch(i).name, filesep], ...

%                       ch(i).name, iconpath, ~ch(i).isdir);

%               end

%           end

%       catch

%           error('MyApplication:UnrecognizedNode', ...

%             ['The uitree node type is not recognized. You may need to ', ...

%             'define an ExpandFcn for the nodes.']);

%       end

%

%       if (count == 0)

%           nodes = [];

%             end

%       % ---------------------------------------------

%

%   See also UITREENODE, UITABLE, PATH

%   Copyright 2003-2008 The MathWorks, Inc.

%   $Revision: 1.1.6.23 $  $Date: 2008/06/24 17:15:27 $

%   Release: R14. This feature will not work in previous versions of MATLAB.

% If using the 'v0' switch, use the undocumented uitree explicitly.

if (usev0dialog(varargin{:}))

[tree, container] = uitree_deprecated(varargin{2:end});

else

% Replace this with a call to the documented uitree when ready.

warning('MATLAB:uitree:MigratingFunction', ...

['This undocumented function will be replaced in a future release.\n', ...

'To continue to use it, add ''v0'' as its first argument, followed by its normal calling sequence.']);

[tree, container] = uitree_deprecated(varargin{:});

end