title: CKEDITOR Event for font size or font family selection
body: <p>My requirement is to find the change or selection event for fontsize or fontfamily dropdown in toolbox.</p>
  
  <p><strong>Change</strong> event in CKEDITOR works whenever any type of change is made in Editor part whether change is made through typing, paste or toolbox button clicked. I need event to detect only for dropdown like fontsize is selected from fontsize dropdown.</p>
  
  <p><strong>SelectionChange</strong> event works whenever any text is selected in Editor and any type of change is made on selected text whether through typing, or through toolbox button clicked.</p>
  
  <p><strong>afterCommandExec</strong> is very much closely related with my requirement like it tells which toolbar button is clicked. Basically, I need which toolbox button is clicked. <strong>afterCommandExec</strong> works with all toolbar buttons except for toolbar items which are shown as dropdown like font-family, font-size.
  How should I recognize dropdown type button whenever any selection is made in dropdown type button?</p>
  
  <p>Any help would be appreciated. </p>