matlab GUI实现简易计算器

function varargout = compute(varargin)
% COMPUTE MATLAB code for compute.fig
% COMPUTE, by itself, creates a new COMPUTE or raises the existing
% singleton*.
%
% H = COMPUTE returns the handle to a new COMPUTE or the handle to
% the existing singleton*.
%
% COMPUTE('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in COMPUTE.M with the given input arguments.
%
% COMPUTE('Property','Value',...) creates a new COMPUTE or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before compute_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to compute_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 compute

% Last Modified by GUIDE v2.5 29-Jan-2017 17:15:48

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @compute_OpeningFcn, ...
'gui_OutputFcn', @compute_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 compute is made visible.
function compute_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 compute (see VARARGIN)

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

yunsuan = '未点击运算按钮';
handles.yunsuan = yunsuan;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes compute wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = compute_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 pushbuttonCompute.
function pushbuttonCompute_Callback(hObject, eventdata, handles)
% hObject handle to pushbuttonCompute (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
if isempty(get(handles.edit1,'string'))
set(handles.edit1,'string',0);
end

if isempty(get(handles.edit2,'string'))
set(handles.edit2,'string',0);
end

data1 = get(handles.edit1,'string');
data2 = get(handles.edit2,'string');
data1 = str2num(data1);
data2 = str2num(data2);
result = '';

switch handles.yunsuan
case {'加','未点击运算按钮'}
result = num2str(data1 + data2);
case '减'
result = num2str(data1 - data2);
case '乘'
result = num2str(data1 * data2);
case '除'
result = num2str(data1 / data2);
end

set(handles.edit3,'string',result);
guidata(hObject,handles);

% --- Executes on button press in pushbuttonClear.
function pushbuttonClear_Callback(hObject, eventdata, handles)
% hObject handle to pushbuttonClear (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
set(handles.edit1,'string',0);
set(handles.edit2,'string',0);
set(handles.edit3,'string',0);
guidata(hObject,handles);

% --- Executes on button press in pushbuttonExit.
function pushbuttonExit_Callback(hObject, eventdata, handles)
% hObject handle to pushbuttonExit (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
close all;
clear all;


function edit1_Callback(hObject, eventdata, handles)
% hObject handle to edit1 (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 edit1 as text
% str2double(get(hObject,'String')) returns contents of edit1 as a double


% --- Executes during object creation, after setting all properties.
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit1 (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 edit2_Callback(hObject, eventdata, handles)
% hObject handle to edit2 (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 edit2 as text
% str2double(get(hObject,'String')) returns contents of edit2 as a double


% --- Executes during object creation, after setting all properties.
function edit2_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit2 (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 edit3_Callback(hObject, eventdata, handles)
% hObject handle to edit3 (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 edit3 as text
% str2double(get(hObject,'String')) returns contents of edit3 as a double


% --- Executes during object creation, after setting all properties.
function edit3_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit3 (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


% --- Executes when selected object is changed in uipanel1.
function uipanel1_SelectionChangeFcn(hObject, eventdata, handles)
% hObject handle to the selected object in uipanel1 
% eventdata structure with the following fields (see UIBUTTONGROUP)
% EventName: string 'SelectionChanged' (read only)
% OldValue: handle of the previously selected object or empty if none was selected
% NewValue: handle of the currently selected object
% handles structure with handles and user data (see GUIDATA)
switch get(hObject,'string')
case '加'
yunsuan = '加';
case '减'
yunsuan = '减';
case '乘'
yunsuan = '乘';
case '除'
yunsuan = '除';
end

handles.yunsuan = yunsuan;
guidata(hObject,handles);

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