CODEWITHSUNDEEP
matlabmatlab-gui
David Ling
David Ling

Reputation: 93

how to access a gui object in a nested function from a base workspace

I think my issue is I don't know how to access guiel.hAX(3) property in my button callback function where I put kiddies = get(guiel.hAX(3),'Children'); I got the error:

Undefined variable "guiel" or class "guiel.hAX".

Error in showTF/callback_update_model (line 508)
    kiddies = get(guiel.hAX(3),'Children');

My nested function for button callback:

function callback_update_model(~,~)
    vars.dropheight = str2num(get(edit(2),'String'));
    vars.armradius = str2num(get(edit(1),'String'));
    kiddies = get(guiel.hAX(3),'Children');
    delete(kiddies); 
    clear kiddies;
    set(guiel.tfPanel,'Visible','off','Position',cnst.tfPanelpos);
    set(guiel.hAX(1),'Position',cnst.axpos1);

    if ishandle(guiel.hAX(2)) 
    set(guiel.hAX(2),'Position',cnst.axpos2);
    end
    eval(get(guiel.hPB(4),'Callback'));
end

I initialize variables in other mfile

guiel.hAX(1) = -1;
guiel.hAX(2) = -1;
guiel.hAX(3) = -1;
guiel.tfPanel = -1;
...
    guiel.hAX(3) = axes('Parent',guiel.tfPanel,'Color',cnst.OFFWHITE,'Layer',...
                'top','Xlim',[0 1],'YLim',[0 1],'GridLineStyle','none','Units','Normalized',...
                'XTick',[],'YTick',[],'Box','off','Visible','off','Position',cnst.axpos3);

Upvotes: 0

Views: 48

Answers (1)

Kenneth Boyd
Kenneth Boyd

Reputation: 667

To make data available in callbacks, you can store the data in the UserData property of the figure. If your figure handle is h_fig, then you would use code like this to store the data in the figure:

set(h_fig, 'UserData', guiel)

In your callback, you can use the gcbo function to get the handle to the figure, then extract the user data, use code like this:

[~, h_fig] = gcbo;
guiel = get(h_fig, 'UserData')

Upvotes: 1

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