error while calling a programatic gui from a guide gui

I have a main GUI created using GUIDE and I am calling a programmatic GUI (dialog box with some inputs)by clicking pushbutton callback from the main GUI.

by doing so MATLAB give the following error

??? Error using ==> WSM>getLASandXLS
Too many output arguments.

Error in ==> WSM>impWizard_Callback at 259
files = getLASandXLS;

The following is the code for my programmatic GUI which works fine from commandline but not inside the pussbutton callback of main GUI

      function varargout = getLASandXLS(varargin)
    % getLASandXLS Get file names for processing data
    % click browse push buttons. Clicking the buttons
    % populates the edit boxes. click OK to finsh

    mInputArgs      =   varargin;   % Command line arguments when invoking the GUI
    mOutputArgs     =   {};         % Variable for storing output when GUI returns
    %  Initialize and hide the GUI as it is being constructed.
    w = 500; % pixels
    h = 120; % pixels
    f = figure('Visible','off', 'Color',[.94 .94 .94],'MenuBar','none',...
               'Name','Choose data files','NumberTitle','off',...
               'ToolBar','none','Resize','off','Position',[250,500,w,h]);

    htextLAS  = uicontrol('Style','text',...
                 'String','Log data file path',...
                 'Position',[10,h-43.5,100,25]);

    htextXLS  = uicontrol('Style','text',...
                 'String','Lab data file path',...
                 'Position',[10,h-78.5,100,25]);

    heditLAS  = uicontrol('Style','edit', ...
                 'BackgroundColor',[1 1 1],...
                 'enable', 'on',...
                 'String','Choose LAS file',...
                 'Position',[120,h-40,300,25]);

    heditXLS  = uicontrol('Style','edit',...
                 'BackgroundColor',[1 1 1],...
                 'enable', 'on',...
                 'String','Choose XLS file',...
                 'Position',[120,h-75,300,25]);

    hpbtnLAS  = uicontrol('Style','pushbutton',...
                 'String','Browse',...
                 'Callback',{@browseLAS_Callback},...
                 'Position',[430,h-40,60,25]);

    hpbtnXLS  = uicontrol('Style','pushbutton',...
                 'String','Browse',...
                 'Callback',{@browseXLS_Callback},...
                 'Position',[430,h-75,60,25]);

    hpbtnOK   = uicontrol('Style','pushbutton',...
                 'String','OK',...
                 'Callback',{@ok_Callback},...
                 'Position',[430,h-110,60,25]);

    hpbtnCancel  = uicontrol('Style','pushbutton',...
                 'String','Cancel',...
                 'Callback',{@cancel_Callback},...
                 'Position',[360,h-110,60,25]);

    movegui(f, 'center');         
    set(f,'Visible','on')
    uiwait(f);
    % varargout = files;
    mOutputArgs{1} =files;
    if nargout>0
        [varargout{1:nargout}] = mOutputArgs{:};
    end

        function browseLAS_Callback(source, eventdata)
            filter_spec={'*.las', 'Well log files (*.las)'; ...
                    '*.*',          'All files (*.*)'};
            dialogue='Read LAS file';
            [fname,pname] = uigetfile(filter_spec, dialogue);
            filename = strcat(pname, fname);
            if fopen(filename) == -1
                error('No file selected');            
            end
            set(heditLAS, 'string', filename);
        end

        function browseXLS_Callback(source, eventdata)
            filter_spec={'*.Xls*', 'Core data sheets (*.Xls)'; ...
                    '*.*',          'All files (*.*)'};
            dialogue='Read Excel file';
            [fname,pname] = uigetfile(filter_spec, dialogue);
            filename = strcat(pname, fname);
            if fopen(filename) == -1
                error('No file selected');
            end
            set(heditXLS, 'string', filename);
        end

        function cancel_Callback(source, eventdata)
            disp('Import data dialog was cancelled');
            files{1} = [];
            files{2} = [];
            uiresume;
            delete(f);
        end

        function ok_Callback(source, eventdata)
            files{1} = get(heditLAS,'String');
            files{2} = get(heditXLS,'String');
            uiresume;
            delete(f);
        end

    end

Answer 1

[Walter Roberson]

[varargout{1:nargout}] = deal(mOutputArgs{1:nargout});

or, better,

if nargout > numel(mOutputArgs)
  mOutputArgs(end+1:nargout) = {};
end
varargout(1:nargout) = mOutputArgs(1:nargout);

When the number of values in mOutputArgs was more than the number of output arguments, the code you were using had a mismatch between the left and right hand side. The "or, better" version also protects against the number of output arguments being larger than the number of available values.

[salamay]

I used your first method but still gives the same error while using it inside another GUI pushbutton callback.

I have a feeling that getLASandXLS doesn not have any issues but theres gotta be something wrong while calling it from another GUIDE generated gui

[salamay]

Oh I found the problem.

I had the same function in the main gui which i initially was trying to write and then decided to make it an external function. Now that I have deleted that it works just fine.

Thanks anyway for your help!