Question

急！MATLAB的GUI界面中怎样通过edit text把值赋给变量a？

我原程序是这样的，试过不行
function length_input_Callback(hObject, eventdata, handles)
% hObject handle to length_input (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of length_input as text
% str2double(get(hObject,'String')) returns contents of length_input as a double
length=str2num(get(handles.length_input,'string'));
%变量名为length，edit text标签为length_input

Answer 1

只看代码是没有问题的。应该是其它方面的细节问题。例如edit text的Tag中值是否为length_input

追问

呵呵，我找到问题了，这个代码要放在按钮底下而不是edit text底下