假設你有兩個GUI叫一個叫gui_1,另一個叫gui_2,在gui_2中調用gui_1的參數或者結果。
首先在gui_1中進行參數輸入操作：
（1）返回值只有一個的情況
在gui_1中的：
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function gui_1_OpeningFcn(hObject, eventdata, handles, varargin)
handles.output = 數據或者變量名；
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
在gui_1中的
function varargout = gui_1_OutputFcn(hObject, eventdata, handles)
varargout{1} = handles.output;
其實程序本來的.m文件就是這樣的，不用更改，如果數據或者變量是在同一個GUI中別的控件或執行中輸入的，將數據或者變量名定義爲全局變量就可，即：
global 數據或者變量名；
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function gui_1_OpeningFcn(hObject, eventdata, handles, varargin)
global 數據或者變量名；
handles.output = 數據或者變量名
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
（2）返回值有多個以上的情況
基本以上面相同，
function gui_1_OpeningFcn(hObject, eventdata, handles, varargin)
下面任意一個地方輸入
handles.output = 數據1或者變量名1；
handles.secend_output = 數據2或者變量名2；
handles.thrid_output = 數據3或者變量名3；
...........................
同時在
在gui_1中OutputFcn輸入以下語句
function varargout = gui_1_OutputFcn(hObject, eventdata, handles)
varargout{1} = handles.output;
varargout{2} = handles.secend_output;
varargout{3} = handles.thrid_output;
........................
依次類推，在同一個gui中的參數傳遞採用上述的設置爲全局變量調用即可。
在gui_2中的buttonCallback下輸入
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function pushbutton1_Callback(hObject, eventdata, handles)
a=gui_1;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
則gui_1的結果就傳遞到a中。
同時對返回值爲多參數的情況gui_2中則要輸入語句改爲
在gui_2中的buttonCallback下輸入
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function pushbutton1_Callback(hObject, eventdata, handles)
[data1,data2,data3,....]=gui_1;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
則gui_1的結果就傳遞到[data1,data2,data3,....]=中,分別對這些返回值進行操作即可。
方法2：
使用setappdata和getappdata兩個函數。
－－－－－－－－－－－－－－－－－－－－－－－－－－－－
SETAPPDATA(H, NAME, VALUE) sets application-defined data for
the object with handle H. The application-defined data,
which is created if it does not already exist, is
assigned a NAME and a VALUE. VALUE may be anything.
See also getappdata, rmappdata, isappdata.
－－－－－－－－－－－－－－－－－－－－－－－－－－－－
H設置爲0，表示matlab的全局句柄，而不是某個窗口或者控件的句柄。
value爲，你需要傳遞的數據變量，我們喜歡用結構變量。
name爲當前figB的窗體標識，也就是窗體的tag。
例如在figB裏面
spec_data.length = 20;
spec_data.weight = 200;
setappdata(0,'figB',spec_data); %保存
以上代碼放在figB裏面需要保存設置參數的callback裏面
然後在figB的
output 那個callback
function varargout = figB_OutputFcn(hObject, eventdata, handles)
% Get default command line output from handles structure
%**********************return global varible
%varargout{1} = handles.output;
uiwait(gcf);
h=getappdata(0,'figB');
varargout{1}=h;
通過output裏面的缺省變量varargout輸出來。
在figA裏面
就那樣用
ret=figB;
