how to call a function inside a button created in a function?

Question

Abel Romero 2017-11-27

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/369519-how-to-call-a-function-inside-a-button-created-in-a-function

评论： Rik 2017-11-27

image.png

Hello everyone, I created a function in matlab in which when I introduce some values they are printed on some static text and I create a button that allows me to delete the row where the button is (the variables I keep in a struct). My question is, how can I use the callback of the delete button within the function? I attached the code so you can understand it better

 function [c,t,v,fn,ln,btn] = addInfo(countElement,E)
for i=1:countElement
c = uicontrol('Style','text',...
                         'String',i,...
                         'Position',[20 460-30*(i-1) 20 20]);
t = uicontrol('Style','text',...
                         'String',E(i).Type,...
                         'Position',[70 460-30*(i-1) 60 20]);
v = uicontrol('Style','text',...
                         'String',E(i).V,...
                         'Position',[145 460-30*(i-1) 35 20]);
fn = uicontrol('Style','text',...
                         'String',E(i).Fnode,...
                         'Position',[210 460-30*(i-1) 35 20]);
ln = uicontrol('Style','text',...
                         'String',E(i).Lnode,...
                         'Position',[275 460-30*(i-1) 35 20]);
btn = uicontrol('Style', 'pushbutton', 'String', '-',...
        'Position', [330 460-30*(i-1) 35 20],...
        'Callback', @deleteInfo%%my problem is here); 
end
function [ c,t,v,fn,ln,btn ] = deleteInfo( c,countElement,E )
a=str2double(get(handles.c,'String'));
E(a)=[];
countElement=countElement-1;
for i=1:countElement
c = uicontrol('Style','text',...
                       'String',i,...
                       'Position',[20 460-30*(i-1) 20 20]);
t = uicontrol('Style','text',...
                       'String',E(i).Type,...
                       'Position',[70 460-30*(i-1) 60 20]);
v = uicontrol('Style','text',...
                       'String',E(i).V,...
                       'Position',[145 460-30*(i-1) 35 20]);
fn = uicontrol('Style','text',...
                       'String',E(i).Fnode,...
                       'Position',[210 460-30*(i-1) 35 20]);
ln = uicontrol('Style','text',...
                       'String',E(i).Lnode,...
                       'Position',[275 460-30*(i-1) 35 20]);
btn = uicontrol('Style', 'pushbutton', 'String', '-',...
      'Position', [330 460-30*(i-1) 35 20],...
      'Callback', @deleteInfo%%my problem is here); 
end

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Answer 1

Rik 2017-11-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/369519-how-to-call-a-function-inside-a-button-created-in-a-function#answer_293384

Start with saving all the handles in one or multiple arrays when you initialize them (save them to guidata so you can get to them in a callback). Then in the delete callback you can loop through the array, moving all elements after the deleted object one level up.

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Abel Romero 2017-11-27

在 MATLAB Online 中打开

I save it in the gui, my problem is that I don't know how to call the function in the delete button.

This is the code that I use when i call the addInfo function. First of all i add the element to the struct, and every time that I add an element i refresh the print. The function that delete the element that i selected do the same, but in this case i move all the elements one position.

Thanks for your answer!

function addElement_Callback(hObject, eventdata, handles)
% hObject    handle to addElement (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global   label value fnode lnode 
[handles.E, handles.countElement]=add_Element( handles.E,handles.countElement,label,value,fnode,lnode );
[handles.c,handles.t,handles.v,handles.fn,handles.ln,handles.btn]=addInfo(handles.countElement,handles.E);
guidata(hObject,handles);