在Matlab中从不同的GUI调用GUI函数

Question

我有两个GUI文件，如下所示：

gui1.m

function varargout = gui1(varargin)
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @gui1_OpeningFcn, ...
                   'gui_OutputFcn',  @gui1_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

function gui1_OpeningFcn(hObject, eventdata, handles, varargin)
handles.output = hObject;
guidata(hObject, handles);
function varargout = gui1_OutputFcn(hObject, eventdata, handles) 
varargout{1} = handles.output;
function text_Callback(hObject, eventdata, handles)

function text_CreateFcn(hObject, eventdata, handles)
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

function pushbutton1_Callback(hObject, eventdata, handles)
a = get(handles.text,'String');
disp(a);

这个gui1.m有一个编辑框和一个按钮，当我点击pushbutton1时，它会显示它的内容。

gui2.m

function varargout = gui2(varargin)
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @gui2_OpeningFcn, ...
                   'gui_OutputFcn',  @gui2_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
function gui2_OpeningFcn(hObject, eventdata, handles, varargin)
handles.output = hObject;
guidata(hObject, handles);
function varargout = gui2_OutputFcn(hObject, eventdata, handles) 
varargout{1} = handles.output;

function pushbutton1_Callback(hObject, eventdata, handles)
gui1('pushbutton1_Callback', hObject, eventdata, handles);

所以当我点击gui2.m的按钮pushbutton1时，我会得到以下错误

Reference to non-existent field 'text'.
Error in gui1>pushbutton1_Callback (line 44)
a = get(handles.text,'String');
Error in gui_mainfcn (line 96)
        feval(varargin{:});
Error in gui1 (line 17)
    gui_mainfcn(gui_State, varargin{:});
Error in gui2>pushbutton1_Callback (line 32)
gui1('pushbutton1_Callback', hObject, eventdata,
handles);
Error in gui_mainfcn (line 96)
        feval(varargin{:});
Error in gui2 (line 16)
    gui_mainfcn(gui_State, varargin{:});
Error in
@(hObject,eventdata)gui2('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

有人能告诉我问题出在哪里吗？因为当我删除set this并为gui1.m中的变量a分配一些数字并按下gui2.m中的按钮时，我可以显示a的值。

Answer 1

您需要在两个GUI之间共享数据：将要共享的数据（gui1的本地数据）传递给gui1的pushbutton1_Callback函数中的共享变量（即MySharedData），然后只调用gui2;而不是gui1('pushbutton1_Callback', hObject, eventdata, handles);。然后在gui2的pushbutton1_Callback中，您可以检索共享数据MySharedData，并对数据执行您想要的操作。

有一些说明：

http://www.mathworks.com/help/matlab/creating_guis/share-data-among-callbacks.html

http://www.mathworks.com/matlabcentral/answers/338-how-to-pass-data-from-one-gui-to-another

更新：

更简单的方法，但在我看来不太可靠：当你调用gui1的按钮时，将值分配给工作区的变量（assignin('base', 'varname', value)），然后在gui2的按钮回调Fcn中，你可以用val = evalin('base', 'varname')获得变量。