MATLAB---选择省份城市应用

function varargout = example6_1_9(varargin)
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @example6_1_9_OpeningFcn, ...
                   'gui_OutputFcn',  @example6_1_9_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{
    1})
    gui_State.gui_Callback = str2func(varargin{
    1});
end

if nargout
    [varargout{
    1:nargout}] = gui_mainfcn(gui_State, varargin{
    :});
else
    gui_mainfcn(gui_State, varargin{
    :});
end

function example6_1_9_OpeningFcn(hObject, eventdata, handles, varargin)
handles.output = hObject;
guidata(hObject, handles);

function varargout = example6_1_9_OutputFcn(hObject, eventdata, handles) 
varargout{
    1} = handles.output;

function province_Callback(hObject, eventdata, handles)
sel = get(hObject, 'value');
stra = {
    '哈尔滨'; '大庆'; '阿城'; '齐齐哈尔'; '黑河'};
strb = {
    '武汉'; '黄冈'; '襄樊'; '宜昌'; '荆州'; '孝感'};
switch sel
    case 1
        set(handles.city, 'string', '', 'value', 1)
    case 2
        set(handles.city, 'string', stra, 'value', 1)
    case 3
        set(handles.city, 'string', strb, 'value', 1)
end