matlab-gui程序(4)

使用setappdata,getappdata等完成数据参数交换

function varargout = test1(varargin)
% TEST1 M-file for test1.fig
%      TEST1, by itself, creates a new TEST1 or raises the existing
%      singleton*.
%
%      H = TEST1 returns the handle to a new TEST1 or the handle to
%      the existing singleton*.
%
%      TEST1('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in TEST1.M with the given input arguments.
%
%      TEST1('Property','Value',...) creates a new TEST1 or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before test1_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to test1_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help test1
                                            
% Last Modified by GUIDE v2.5 04-Oct-2012 17:21:13

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @test1_OpeningFcn, ...
                   'gui_OutputFcn',  @test1_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
% End initialization code - DO NOT EDIT


% --- Executes just before test1 is made visible.
function test1_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to test1 (see VARARGIN)

% Choose default command line output for test1
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);
setappdata(handles.btn_draw,'numa',1);
setappdata(handles.btn_draw,'numb',1);
setappdata(handles.btn_draw,'numc',1);
% UIWAIT makes test1 wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = test1_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --- Executes on button press in btn_draw.
function btn_draw_Callback(hObject, eventdata, handles)
% hObject    handle to btn_draw (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%求解一元二次方程
myres=roots([getappdata(hObject,'numa'),getappdata(hObject,'numb'),getappdata(hObject,'numc')]);
set(handles.result,'string',mat2str(myres)) ;

function a_num_Callback(hObject, eventdata, handles)
% hObject    handle to a_num (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of a_num as text
%        str2double(get(hObject,'String')) returns contents of a_num as a double
numa=str2double(get(hObject,'string'));
if isnan(numa)
      errordlg('请输入数字','输入错误','modal');
end
setappdata(handles.btn_draw,'numa',numa);

      

% --- Executes during object creation, after setting all properties.
function a_num_CreateFcn(hObject, eventdata, handles)
% hObject    handle to a_num (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function b_num_Callback(hObject, eventdata, handles)
% hObject    handle to b_num (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of b_num as text
%        str2double(get(hObject,'String')) returns contents of b_num as a double
numb=str2double(get(hObject,'string'));
if isnan(numb)
      errordlg('请输入数字','输入错误','modal');
end
setappdata(handles.btn_draw,'numb',numb);

% --- Executes during object creation, after setting all properties.
function b_num_CreateFcn(hObject, eventdata, handles)
% hObject    handle to b_num (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end



function c_num_Callback(hObject, eventdata, handles)
% hObject    handle to c_num (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of c_num as text
%        str2double(get(hObject,'String')) returns contents of c_num as a double
numc=str2double(get(hObject,'string'));
if isnan(numc)
      errordlg('请输入数字','输入错误','modal');
end
setappdata(handles.btn_draw,'numc',numc);

% --- Executes during object creation, after setting all properties.
function c_num_CreateFcn(hObject, eventdata, handles)
% hObject    handle to c_num (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

 SETAPPDATA Set application-defined data.
   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.

 

GETAPPDATA Get value of application-defined data.
   VALUE = GETAPPDATA(H, NAME) gets the value of the
   application-defined data with name specified by NAME in the
   object with handle H.  If the application-defined data does
   not exist, an empty matrix will be returned in VALUE.
 
   VALUES = GETAPPDATA(H) returns all application-defined data
   for the object with handle H.
 
 RMAPPDATA Remove application-defined data.
   RMAPPDATA(H, NAME) removes the application-defined data NAME,
   from the object specified by handle H.

 ISAPPDATA True if application-defined data exists.
   ISAPPDATA(H, NAME) returns 1 if application-defined data with
   the specified NAME exists on the object specified by handle H,
   and returns 0 otherwise.