-- Fix MainGUI logger not closing file handle when exiting

if isempty(maingui)

    return;

end

if isfield(maingui,'logger') && ~isempty(maingui.logger)

    maingui.logger.Close();

end

if isempty(maingui.dataTree)

    return;

end

if ~isempty(maingui.logger)

    maingui.logger.Close('MainGUI');

end

% Delete Child GUIs before deleted the dataTree that all GUIs use.

for ii=1:length(maingui.childguis)