problem with using if statements

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joanna 2012-11-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/52912-problem-with-using-if-statements

i have 2 options in popupmenu and both of the options has 2 panels which contain pushbutton. when i select option1, the pushbutton in panel2 is disabled..when i select option2, the pushbutton in panel1 is disabled.

v=get(handles.selectGroup, 'Value');

switch v

    case 1
        set(handles.capturecolorButton,'Enable','off');
        set(handles.ROI2Button,'Enable','on');
    case 2
        set(handles.capturecolorButton,'Enable','on');
        set(handles.ROI2Button,'Enable','off');
    otherwise
end;

what can be corrected?

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Arthur 2012-11-6

Please copy the entire error message you get, we're shooting in the dark here....

joanna 2012-11-6

??? Attempt to reference field of non-structure array.

Error in ==> capture>selectGroup_CreateFcn at 464 v=get(handles.selectGroup, 'Value');

Error in ==> gui_mainfcn at 96 feval(varargin{:});

Error in ==> capture at 42 gui_mainfcn(gui_State, varargin{:});

Error in ==> @(hObject,eventdata)capture('selectGroup_CreateFcn',hObject,eventdata,guidata(hObject))

??? Error using ==> struct2handle Error while evaluating uicontrol CreateFcn

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采纳的回答

Arthur 2012-11-6

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/52912-problem-with-using-if-statements#answer_64460

You placed the code intothe CreateFcn of te popup. This means the code is only executed when the popup is created, not when you press it. Cut and paste the code into the CallbackFcn of the popup, and it probably works.