title: ComboBox hidden behind Button not triggering on Click event
body: <p>I'm converting an old VB form to .NET, and there a few Buttons which each have a corresponding ComboBox hiding behind them.  The previous behavior was that you'd click the Button, and that would trigger the ComboBox behind it, which would then drop down a selection list.  I believe the idea was to have a static color and text label <em>(which cannot be a selectable option in the drop-down list)</em>, with the functionality of a ComboBox.</p>
  
  <p>Now, in VB.NET, clicking on the Button <em>(which is directly over the ComboBox in the form)</em> won't trigger the ComboBox dropdown anymore.  However, if I make the ComboBox visible enough to click on, it will trigger the <code>ComboBox.TextChanged</code> event, and show the drop-down <em>(they're set to the <code>DropDownList</code> style)</em>.  I've set the event handler to handle both that event and the Button event.  I've tried <code>Button.MouseDown</code>, <code>Button.MouseClick</code>, and <code>Button.Click</code> -- none of which have worked.</p>
  
  <p>I did find the SplitButton control option <a href="https://stackoverflow.com/a/10171863/1411373">suggested here</a>, which would probably do the job, but I don't want to have to integrate a non-native control for just 3 buttons. I don't really want to <a href="https://stackoverflow.com/questions/5703206/combobox-controltemplate-drop-down-button">mess with the control template</a>, either -- and I'm not sure that would be a solution, anyway.  </p>
  
  <p>Why is the ComboBox not triggering?</p>