问题描述
我正在创建一个用户输入一个值的GUI,当他按下一个按钮时,它将运行一个外部函数并显示错误消息。我无法在GUI编码中成功插入变量。我很困惑,在哪里插入我的变量。我已尝试句柄,但不幸的是它不工作。
%---在Stallfunction变为可见之前执行。
函数Stallfunction_OpeningFcn(hObject,〜,handles,varargin)
%此函数没有输出参数,请参阅OutputFcn。
%hObject句柄图
%eventdata reserved - 在未来版本的MATLAB中定义
%处理带句柄和用户数据的结构(请参阅GUIDATA)
%varargin命令行(参见VARARGIN)
%为Stallfunction选择默认命令行输出
handles.user_entry = user_entry;
%更新句柄结构
guidata(hObject,句柄);
%UIWAIT使停顿功能等待用户响应(请参阅UIRESUME)
%uiwait(handles.figure1);
我在上面的代码中插入了变量,'user_entry'是正确的?
user_entry
你的功能。如果通过为 user_entry
传递一个值来启动GUI:
stallfunction(user_entry)
然后你的代码的第一行应该是:
if〜isempty(varargin)
user_entry = varargin {1};
else
错误('请用输入值启动GUI')
结束
在此之后,您可以将 user_entry
分配给句柄结构。
I am creating a GUI where a user inputs a value and when he presses a pushbutton it runs an external function and displays error messages. I am having trouble with inserting the variable successfully in the GUI coding. I am confused as to where to insert my variable. I have tried handles but unfortunately its not working.
% --- Executes just before Stallfunction is made visible.
function Stallfunction_OpeningFcn(hObject, ~, 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 Stallfunction (see VARARGIN)
% Choose default command line output for Stallfunction
handles.user_entry = user_entry;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes Stallfunction wait for user response (see UIRESUME)
% uiwait(handles.figure1);
I have inserted the variable in the above code, which is 'user_entry' is that correct?
user_entry
is not assigned a value in your function. If you launch your GUI by passing a value for user_entry
like this:
Stallfunction(user_entry)
then the first lines of your code in the openingFcn should be:
if ~isempty(varargin)
user_entry = varargin{1};
else
error('please start the GUI with an input value')
end
After this, you can assign user_entry
to the handles structure as you're doing already.
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