基于MATLAB图形用户界面设计部分程序代码

基于MATLAB图形用户界面设计部分程序代码：

function varargout = daq(varargin)

% DAQ M-file for daq.fig

if nargin == 0 % LAUNCH GUI

fig = openfig('daq.fig','reuse');%打开fig图形文件

% 创建一个句柄结构，传递给callback，并存放该句柄结构

handles = guihandles(fig);

guidata(fig, handles);

if nargout > 0

varargout{1} = fig;

end

elseif ischar(varargin{1}) % 激活下面的callback例程

try

if (nargout)

[varargout{1:nargout}] = feval(varargin{:}); % 所有的callback函数最终都由feval调用

else

feval(varargin{:});

end

catch

disp(lasterr);

end

end

%======================================================

% --- 输入函数

function daq_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 daq (see VARARGIN)

% Choose default command line output for daq

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

% UIWAIT makes daq wait for user response (see UIRESUME)

% uiwait(handles.figure1);

% --- 输出函数

function varargout = daq_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;

%=====================================================

% --- 开始

function pushbutton1_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

set(handles.pushbutton1,'Enable','off'); %程序正在运行，屏蔽“启动”键

%采样速率设置：

answer=get(handles.edit1,'String');

if isempty(answer)

msgbox('请设置采样频率','信息提示','warn','non-modal');

set(handles.pushbutton1,'Enable','on');

else

da=get(handles.edit2,'String'); %取数据保存文件名

if isempty(da)

msgbox('请设置保存路径：','信息提示','warn','non-modal');

end

%采样及显示：

[x, y] = DataSample;

n=[x,y];

plot(x, y);

%数据保存：

eval(da)

end

end

%显示电压幅值：

w=[x,y];

minY=min(y);

maxY=max(y);

v=(-minY+maxY);

set(handles.edit3,'string',num2str(v));

%控件设置：

set(handles.pushbutton2,'Enable','on');

set(handles.edit2,'Enable','off'); %程序正在运行，屏蔽“保存文件名”输入

set(handles.edit1,'Enable','off'); %屏蔽采样速率编辑框

set(handles.text7,'String','波形显示窗口');

set(handles.pushbutton1,'Enable','on'); %采样停止，“启动”键使能

set(handles.edit2,'Enable','on'); %采样停止，“保存文件名”输入使能

set(handles.axes1,'Color','green');

%======================================================

% --- 停止

function pushbutton2_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

set(handles.pushbutton2,'Enable','off');

set(handles.pushbutton1,'Enable','on');

set(handles.edit2,'Enable','on'); %程序停止运行，“保存文件名”可输入

set(handles.edit1,'Enable','off'); %屏蔽采样速率编辑框

%stop(hObject);

pause