Matlab制作计算器

写文章之前先说明一下， 本人用的是 MATLAB R2016b 版本

1   首先新建一个GUIDE ，如下图所示：

2   选择默认的空白界面 Blank GUI (Default)，点确认。

3   拖动一个按钮控件作为输入按键，双击按钮，对按钮属性进行设置(本处只对一个按钮进行设置，其它按钮设置方法一样)，如下图：把 静态文本 作为显示控件 ，其属性设置与输入按钮方法一样介绍了。

4   布置好的界面如下图：

5   最后是代码部分：

% --- Executes on button press in btn1.
function btn1_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '1');
set(handles.txtresult, 'string', temp);


% --- Executes on button press in btn2.
function btn2_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '2');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in btn3.
function btn3_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '3');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in add.
function add_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '+');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in btn4.
function btn4_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '4');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in btn5.
function btn5_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '5');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in btn6.
function btn6_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '6');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in substract.
function substract_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '-');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in btn7.
function btn7_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '7');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in btn8.
function btn8_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '8');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in btn9.
function btn9_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '9');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in multiply.
function multiply_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '*');
set(handles.txtresult, 'string', temp);   

% --- Executes on button press in btn0.
function btn0_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '0');
set(handles.txtresult, 'string', temp);

% --- Executes on button press in clear.
function clear_Callback(hObject, eventdata, handles)
set(handles.txtresult, 'string', '');

% --- Executes on button press in equal.
function equal_Callback(hObject, eventdata, handles)
StrResult = get(handles.txtresult, 'string');
Result = eval(StrResult);    % eval 函数的作用：eval('2+3') == 5  eval('6-4/2') == 4
set(handles.txtresult, 'string',Result);

% --- Executes on button press in divide.
function divide_Callback(hObject, eventdata, handles)
temp = get(handles.txtresult, 'string');   
temp = strcat(temp, '/');
set(handles.txtresult, 'string', temp);

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