|
GUI编写简单计算器*加减乘除，以及部分特殊符号，其实原理特别简单；
语法结构包括实现原理很多大佬都有详细的说明了，这里就不赘述了，简单的入门计算器。
掌握好几个简单的语法就好： 1）获取：变量名=get(handles,‘属性名’)
设置：set(handles,‘属性名’,变量名) 2）使用handles结构在控件之间传递数据。
使用guihandles获得与传入的句柄相关联的handles结构,从而对不同GUI的控件进行操作。 我自己做的这个布局十分简单，大家就不要嘲笑了，这里直接贴上源码。另外附加了一个加菜单项&&菜单项的功能实现
先看下做完后的效果；
  
function varargout = calculator(varargin)
% CALCULATOR MATLAB code for calculator.fig
% CALCULATOR, by itself, creates a new CALCULATOR or raises the existing
% singleton*.
%
% H = CALCULATOR returns the handle to a new CALCULATOR or the handle to
% the existing singleton*.
%
% CALCULATOR('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in CALCULATOR.M with the given input arguments.
%
% CALCULATOR('Property','Value',...) creates a new CALCULATOR or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before calculator_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to calculator_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 calculator
% Last Modified by GUIDE v2.5 25-Apr-2020 21:29:03
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @calculator_OpeningFcn, ...
'gui_OutputFcn', @calculator_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 calculator is made visible.
function calculator_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 calculator (see VARARGIN)
set(handles.edit1,'string','');
set(handles.edit2,'string','');
% Choose default command line output for calculator
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes calculator wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = calculator_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 pushbutton4.
function pushbutton4_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton4 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
textString = get(handles.edit1,'String');
textString = strcat(textString,'4');
set(handles.edit1,'String',textString);
guidata(hObject, handles);
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
|