I wrote a code which is a pattern of popupmenu and edit and static Iu control but it does not work, would you help me?

Question

Elmira Jafari 2021-2-18

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/749337-i-wrote-a-code-which-is-a-pattern-of-popupmenu-and-edit-and-static-iu-control-but-it-does-not-work

评论： Cris LaPierre 2021-2-19

function test
e = uicontrol('Style','Edit','Units','Normalized','Position',[.4 .5 .2 .1]);
uicontrol('Style','text','Units','Normalized',...
    'Position',[.2 .45 .2 .1],'String','Number of laminas');
uicontrol('Style','PushButton','Units','Normalized',...
    'Position',[.4 .3 .2 .1],'String','Create','Callback',@b_clbck);
    function b_clbck(hObject, eventdata, handles)
        n = str2double(get(e,'String'));
        create_figure(n)
    end
    function create_figure(n)
        figure('Units','Normalize','Name','Mechanical Properties')
        for k=1:n
            uicontrol('Style','Edit','Units','Normalized',...
                'Position',[.1 k/n-.75/n .1 .75/n],'String',sprintf('Lamina %#d',k));
            uicontrol('Style','popupmenu','String',{'Graphite','Boron'},'Units','Normalized',...
                'Position',[.25 k/n-.75/n .1 .75/n],'Callback',@c_clbck);
            uicontrol('Style','Edit','Units','Normalized',...
                'Position',[.38 k/n-.75/n .08 .75/n],'Callback',@d_clbck);
            uicontrol('Style','text','Units','Normalized',...
                'Position',[.35 (k/n)-.75/n .03 .75/n],'String','Qx=');
            uicontrol('Style','pushbutton','Units','Normalized',...
                'Position',[1 k/n-.75/n .08 .75/n],'Callback',@e_clbck);
            
        end
        
        function c_clbck(hObject, eventdata, handles)%popupmenu
            idx=get(handles.c,'Value');
            switch idx
                case 1
                    S.Ex=7;
                    S.Ey=20;
                case 2
                    S.Ex=5;
                    S.Ey=30;
                otherwise
            end
            set(handles.c, 'UserData', S);
        end
        function d_clbck(hObject, eventdata, handles)%Qx
            
        end
        function e_clbck(hObject, eventdata, handles)%pushbutton
            S = get(handles.c, 'UserData')
            Ex=S.Ex;
            Ey=S.Ey;
            Qx=Ey/Ex;
            set(handles.d,'string',Qx)
            
        end
        
    end
end

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Rik 2021-2-18

In addition to what Cris told you: for general advice and examples for how to create a GUI have look at this thread.

Rik 2021-2-19

Please avoid posting second questions.

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Answer 1

Cris LaPierre 2021-2-18

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https://ww2.mathworks.cn/matlabcentral/answers/749337-i-wrote-a-code-which-is-a-pattern-of-popupmenu-and-edit-and-static-iu-control-but-it-does-not-work#answer_627319

编辑：Cris LaPierre 2021-2-18

在 MATLAB Online 中打开

Some issues to take into consideration.

You appear to be trying to implement the nested function approach. I would suggest splitting your code into two main functions, one for each figure window.

Another issue is that you are not capturing your component handles. You will need these to tell your callbacks which edit field to update, for example. Because the number of components will depend on the value the user enters, your handles will have to be captured in arrays.

While hObject will let you access the properties of the calling object, you will need a way to refer to other components on the same row. I suggest adding a Tag property that contains the value of your loop index, k. You can query the tag of the invoking component to let you know what handle in the array to reference.

I would not have your popup callback set the value of Ex and Ey. Instead, I would set these values as part of the Calculate callback. I would use your popup callback to clear the string value of the edit field as a flag that the result needs to be recalculated.

You can also use dot notation instead of get and set.

n = str2double(e.String);

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Elmira Jafari 2021-2-19

编辑：Cris LaPierre 2021-2-19

在 MATLAB Online 中打开

function test
e = uicontrol('Style','Edit','Units','Normalized','Position',[.4 .5 .2 .1]);
uicontrol('Style','text','Units','Normalized',...
    'Position',[.2 .45 .2 .1],'String','Number of laminas');
uicontrol('Style','PushButton','Units','Normalized',...
    'Position',[.4 .3 .2 .1],'String','Create','Callback',@b_clbck);
    function b_clbck(hObject,eventdata)
        n = str2double(get(e,'String'));
        create_figure(n)
    end
    
    function create_figure(n)
        figure('Units','Normalize','Name','Mechanical Properties')
        for k=1:n
            uicontrol('Style','Edit','Units','Normalized',...
                'Position',[.1 k/n-.75/n .1 .75/n],'String',sprintf('Lamina %#d',k));
            
            uicontrol('Style','popupmenu','String',{'Graphite','Boron'},'Units','Normalized',...
                'Position',[.25 k/n-.75/n .1 .75/n],'Callback',{@popupmenu_callback});
            
            uicontrol('Style','text','Units','Normalized',...
                'Position',[.35 (k/n)-.75/n .03 .75/n],'String','Qx=');
            
            uicontrol('Style','Edit','Units','Normalized',...
                'Position',[.38 k/n-.75/n .08 .75/n],'Callback',{@ans_callback});
            
            uicontrol('Style','pushbutton','Units','Normalized',...
                'Position',[0.5 k/n-.75/n .08 .75/n],'string','Calculate','Callback',{@Calc_callback});
            
        end
    end
    
    function ans_callback(hObject,eventdata)%Qx
        
    end
    
    function popupmenu_callback(hObject,eventdata)
        idx = get(hObject,'value');
        setappdata(0,'evalue',idx);
    end
    function Calc_callback(hObject,eventdata)%pushbutton
        idx = getappdata(0,'evalue');
        switch idx;
            case 1 % User selects Peaks.
                ex=7;
                ey=20;
                Qx=ey/ex;
            case 2 % User selects Membrane.
                ex=5;
                ey=30;
                Qx=ey/ex;
            otherwise
        end
        
        %????????Idont know how to put Qx which is the final result in the string of ans
        %???? and how to put a loop for inserting final result in each instring of ans
    end
end

Cris LaPierre 2021-2-19

在 MATLAB Online 中打开

Here's what my approach might look like.

function test
hfig = figure();
e = uicontrol('Parent', hfig,'Style','Edit','Units','Normalized','Position',[.4 .5 .2 .1]);
uicontrol('Parent', hfig,'Style','text','Units','Normalized',...
    'Position',[.2 .45 .2 .1],'String','Number of laminas');
uicontrol('Parent', hfig,'Style','PushButton','Units','Normalized',...
    'Position',[.4 .3 .2 .1],'String','Create','Callback',@b_clbck);
    function b_clbck(hObject, eventdata)
        n = str2double(e.String);
        create_figure(n)
    end
end
function create_figure(n)
hfig1 = figure('Units','Normalize','Name','Mechanical Properties');
for k=1:n
    uicontrol('Parent', hfig1,'Style','Edit','Units','Normalized',...
        'Position',[.1 k/n-.75/n .1 .75/n],'String',sprintf('Lamina %#d',k));
    handles.pop(k) = uicontrol('Parent', hfig1,'Style','popupmenu','String',{'Graphite','Boron'},'Units','Normalized',...
        'Position',[.25 k/n-.75/n .1 .75/n],'Tag',num2str(k),'Callback',@c_clbck);
    uicontrol('Parent', hfig1,'Style','text','Units','Normalized',...
        'Position',[.35 (k/n)-.75/n .03 .75/n],'String','Qx=');
    handles.QxVal(k) = uicontrol('Parent', hfig1,'Style','Edit','Units','Normalized',...
        'Position',[.38 k/n-.75/n .08 .75/n]);
    uicontrol('Parent', hfig1,'Style','pushbutton','Units','Normalized','String','Calculate',...
        'Position',[.53 k/n-.75/n .1 .75/n],'Tag',num2str(k),'Callback',@e_clbck);
    
end
    function c_clbck(hObject, eventdata)
        r = str2double(hObject.Tag);
        handles.QxVal(r).String = "";
    end
    
    function e_clbck(hObject, eventdata)%pushbutton
        r = str2double(hObject.Tag);
        
        switch handles.pop(r).Value
            case 1
                Ex=7;
                Ey=20;
            case 2
                Ex=5;
                Ey=30;
        end
        Qx = Ey/Ex;
        handles.QxVal(r).String = num2str(Qx);
    end
end

Rik 2021-2-19

@Cris LaPierre interesting how similar that is to what I suggested in the other thread. I guess my practice is close enough to common practice to have it in common with you ;)

Cris LaPierre 2021-2-19

I'm glad to hear it's not wildly off base. I don't create apps programmatically, so I tried to stick pretty close to the nested function example. Perhaps we both learned from the same place - the doc!

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I wrote a code which is a pattern of popupmenu and edit and static Iu control but it does not work, would you help me?

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I wrote a code which is a pattern of popupmenu and edit and static Iu control but it does not work, would you help me?

12 个评论 显示 10更早的评论隐藏 10更早的评论

采纳的回答

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