title: What is the Use of user32.dll in VB Application?
body: <p>In our we have used the user32.dll and passing the value of hWnd.So I would like to know what is the use of this User32.dll and passing the value hWnd?</p>
  
  <p>They are setting this Values </p>
  
  <pre><code>SetProp hwnd, "PrevWndProc", SetWindowLong(hwnd, GWL_WNDPROC, AddressOf WindowProc)
  </code></pre>