title: sendmessage api to select a specific index of combobox control
body: <p>I am coding an app that can select another app's <code>ComboBox</code> with a certain index.
  For example, I want to select the second listed item "Adobe flash player" from my app with hooking.</p>
  
  <p>The <code>ComboBox</code> app is not mine so I cannot modify the target app.</p>
  
  <p>Usually, putting a text or clicking a button can be done by using <code>Sendmessage</code> API in VB.Net.</p>
  
  <p>The handle value(hWnd) of that <code>ComboBox</code> can be retrieved.
  I want to know which function(api) to use and which value should be used.</p>
  
  <p>Thank you.</p>
  
  <p><img src="https://i.stack.imgur.com/q1Jc6.jpg" alt="enter image description here"></p>