title: Windows Forms - PNG with transparency as background
body: <p>I'm working on a small personal project and I need to create a non-rectanguar window (a circle to be more precise - though that might change) that has a drop shadow. I have the round window by changing the Region property if the form with a png set as background.</p>
  
  <p>The thing is the window is alised and the transparency of the PNG is not working. So the question is how do I get a a antialised window and the transparency of the background image OR the antialised circular window and a way to add the drop shadow effect to the window.</p>
  
  <p>Thanks. </p>