title: Sending command to showDialogue Form from inactive form
body: <p>I want to send keys to a show dialogue form from another inactive form.See the picture</p>
  
  <p><img src="https://i.stack.imgur.com/DgjDo.png" alt="enter image description here"></p>
  
  <p>Form a is showing dialogue.Behind is another form which has a customized keyboard and numpad.
  I simply send keys against these button clicks.
  How is it possible that I can send keys from keyboard to show dialogue form.</p>