title: Activate Button in other application
body: <p>i wan to active start button in other app, i use spy ++ to check the button styles, i c bs_pushbutton. i try to use win api to do it.i tried WM_SETFOCUS and enter key to do it, but fail</p>
  
  <p>these is my code
  <code></p>
  
  <pre><code>    Dim hwnd As Int32 = apiFindWindowEx(HWND_DESKTOP, 0, Nothing, "Open File -     Security Warning")
      Dim cwnd As Int32 = apiFindWindowEx(hwnd, 0, Nothing, "&amp;Run")
      Dim i As Integer = SendMessage(cwnd, BS_PUSHBUTTON, 0, 0)
  </code></pre>
  
  <p></code>
  i declare <code>BS_PUSHBUTTON = &amp;H1&amp;</code> 
  it is correct value for BS_PUSHBUTTON ???</p>
  
  <p>how can i run the app button event??</p>