How to use try catch and call a function (e.g @myfunc)??

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Jovanie Josol 2013-3-3

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/65651-how-to-use-try-catch-and-call-a-function-e-g-myfunc

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FUNCTION IN A PUSH BUTTON - CONNECT -----------------------------------------------------------

function serconnect_Callback(hObject, eventdata, handles)

global serConn

if strcmp(get(hObject,'String'),'CONNECT')

    serPortn = get(handles.sercomm, 'Value');
    if serPortn == 1
        errordlg('Select valid COM port');
    else
        serList = get(handles.sercomm,'String'); 
        serPort = serList{serPortn};
        serConn = serial(serPort,'BaudRate',9600,'DataBits',8,'StopBits',1,'InputBufferSize',55 );
        set(serConn, 'ReadAsyncMode', 'continuous');
        try
            fopen(serConn);
            handles.serConn = serConn;
            set(handles.serconnect, 'String','DISCONNECT');
            set(handles.sercomm, 'Enable','off');
            set(serConn, 'BytesAvailableFcn', {@myfunc,handles});
        catch e
            errordlg(e.message);
        end
    end

else

    set(hObject, 'String','CONNECT');
    fclose(handles.serConn);

end

guidata(hObject, handles);

------------------------------------------------------

MY FUNCTION:

________________________________________________________

function myfunc(hObject, eventdata, handles)

global serConn

try RxText = fscanf(handles.serConn); RxText = strtrim(RxText);

    [InRange,power,va,var,pf,volt,current,id]=strread(RxText,'%s%s%s%s%s%s%s%s','delimiter',',');
        if strcmp(id,'B')
        set(handles.P1,'String',power);
        set(handles.Q1,'String',var);
        set(handles.V1,'String',volt);
        end
        if strcmp(id,'C')
        set(handles.P2,'String',power);
        set(handles.Q2,'String',var);
        set(handles.V2,'String',volt);
        end
        if strcmp(id,'D')
        set(handles.P3,'String',power);
        set(handles.Q3,'String',var);
        set(handles.V3,'String',volt);
        end
        if strcmp(id,'A')
        set(handles.P4,'String',power);
        set(handles.Q4,'String',var);
        set(handles.V4,'String',volt);
        end