title: C# Alpha Blend Transparent PictureBox
body: <p>I have a webcam feed being displayed on my form and would like to draw on top of it. I was going to do this using a picture box, I have found the PictureBox doesn't support true transparency instead just the colour of the form it's on. It also doesn't support alphablending which is how I would want it to display, similar to how forms can be made to appear. </p>
  
  <p>Does anyone know how to do this? Or have a control implemented that can do this?</p>