MATLAB gui timer function callback problem

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Shraddha
Shraddha 2014-5-20
回答： RZM 2016-9-20
Hi,
I'm trying to use a timer in my matlab GUI that calls a function. Passing the handle for the function is causing me issues. Can someone help me with where I'm going wrong in this code?
I'm getting the following error:
Error while evaluating TimerFcn for timer 'timer-1'
Not enough input arguments.
The timer is initialized in the open function for the GUI like so:
function Control_Window_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 Control_Window (see VARARGIN)
% Choose default command line output for Control_Window
handles.output = hObject;
guidata(hObject, handles);
handles = guidata(hObject);
sda = handles.auto_read;
autoread_timer = timer('TimerFcn', {@(hObject, eventdata, handles)auto_read_Callback}, 'Period', 1,'ExecutionMode', 'fixedRate');
start(autoread_timer);
And the function that is accessed with the callback is:
function auto_read_Callback(hObject, eventdata, handles)
% hObject handle to auto_read (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
set(handles.auto_read,'BackgroundColor',[0 1 0]);
set(handles.tabA,'BackgroundColor',[0.7 0.78 1]);
set(handles.tabB,'BackgroundColor',[0.7 0.78 1]);
set(handles.tabC,'BackgroundColor',[0.7 0.78 1]);
set(handles.tabD,'BackgroundColor',[0.7 0.78 1]);
if (get(hObject,'Value'))
data=get(handles.Table1,'data');
for x=1:size(data)
if data{x,4}==1
temp = data{x,1};
string1 = 'struct.';
string2 = strcat(string1,temp);
actualvalue = evalin('base', string2);
data{x,5}=actualvalue;
set(handles.Table1,'data',data)
else
;
end
end
end
set(handles.auto_read,'BackgroundColor',[0.831 0.816 0.784]) ;
Any help would be appreciated

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回答（1 个）

RZM
RZM 2016-9-20
You can use
function auto_read_Callback(obj,event,hObject,eventdata)
handles = guidata(hObject);
instead of
function auto_read_Callback(hObject, eventdata, handles)

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