Question

我有一个matlab GUI（Compare2ImagesGUI），它在另一个GUI（DistanceOrderGUI）中被调用，并且应该根据与用户的某些交互返回一个变量。

以下是Compare2ImagesGUI如何被调用的摘录：

a=1;b=2;
handles.a = a;
handles.b = b;

result = Compare2ImagesGUI('DistanceOrderGUI', handles)

这就是它打开时的作用：

function Compare2ImagesGUI_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 Compare2ImagesGUI (see VARARGIN)

% Choose default command line output for Compare2ImagesGUI
%handles.output = hObject;
a = varargin{2}.a;
b = varargin{2}.b;
handles.a = a;
handles.b = b;
handles.ima = varargin{2}.ims{a};
handles.imb = varargin{2}.ims{b};
init(hObject,handles);

% UIWAIT makes Compare2ImagesGUI wait for user response (see UIRESUME)
uiwait(hObject);

这是init函数：

function init(hObject,handles)

imshow(handles.ima,'Parent',handles.axes1);
handles.current = handles.a;

% handles.ims=ims; handles.gt=gt; 
% handles.folderN=folderN; handles.name=dirnames{folderN};

% Update handles structure
guidata(hObject, handles);

当用户完成交互时，他按下一个按钮，GUI应该关闭并将值返回给它的调用函数：

% --- Executes on button press in pushbutton3.
function pushbutton3_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
figure1_CloseRequestFcn(hObject,handles);

% --- Outputs from this function are returned to the command line.
function varargout = Compare2ImagesGUI_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.current

delete(handles.Compare2ImagesGUI);


% --- Executes when user attempts to close figure1.
function figure1_CloseRequestFcn(hObject, handles)
% hObject    handle to figure1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

if isequal(get(hObject,'waitstatus'),'waiting')
    uiresume(hObject);
else
    delete(hObject);
end

我按照指示如何构建找到here和here的代码，尽管如此，我得到了这个奇怪的错误，并且对于如何应对它真的一无所知：

Error using hg.uicontrol/get
The name 'waitstatus' is not an accessible property for an instance of
class 'uicontrol'.

Error in Compare2ImagesGUI>figure1_CloseRequestFcn (line 127)
if isequal(get(hObject,'waitstatus'),'waiting')

Error in Compare2ImagesGUI>pushbutton3_Callback (line 118)
figure1_CloseRequestFcn(hObject,handles);

Error in gui_mainfcn (line 96)
        feval(varargin{:});

Error in Compare2ImagesGUI (line 42)
    gui_mainfcn(gui_State, varargin{:});

Error in
@(hObject,eventdata)Compare2ImagesGUI('pushbutton3_Callback',hObject,eventdata,guidata(hObject))


Error using waitfor
Error while evaluating uicontrol Callback

请注意，第127行位于function figure1_CloseRequestFcn(hObject, handles)函数中。有什么建议吗？

Answer 1

通常CloseRequestFcn不会通过您创建的uicontrol调用，而是在以下时间调用：

使用内置的图形控件关闭图形（例如顶部的“X”框或图形菜单）
close是为你的人物而设的
退出MATLAB

pushbutton3_Callback将hObject传递给自己的句柄，而不是figure1_CloseRequestFcn到'waitstatus'中的数字句柄。问题是figure属性只属于pushbutton3_Callback。

解决方案是修改pushbutton3_Callback以传递图形句柄，或修改% --- Executes when user attempts to close figure1. function figure1_CloseRequestFcn(hObject, eventdata, handles) % hObject handle to figure1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) hFig = ancestor(hObject,'Figure'); if isequal(get(hFig,'waitstatus'),'waiting') uiresume(hFig); else delete(hFig); end以仅使用图形句柄。例如：

eventdata

注意：我向figure1_CloseRequestFcn添加了@(hObject,eventdata)guitest('figure1_CloseRequestFcn',hObject,eventdata,guidata(hObject))参数，这似乎是代码中缺少的。（通常将其定义为{{1}}）。

将数据从MATLAB GUI传递到另一个函数

1 个答案: