title: Windows Forms sizes not matching
body: <p>I've got some very strict requirements on windows form sizes for elements and I've been having some trouble actually matching that up, I figured out the problem but I don't understand why I'm getting it. I have a picture box that needs to be a specific size, when I set it to that size in the properties panel of visual studio, it doesn't actually take that size, but a value smaller than that. It was throwing off my development. I can rectify it by manually setting the size value in the form code, however I'd like to know why the properties tab doesn't automatically do it correctly. I've just got it outputting the precise size value to a message box.</p>
  
  <p><img src="https://i.imgur.com/ew8tofr.png" alt="Actual size"></p>
  
  <p><img src="https://i.imgur.com/7IWCdJF.png" alt="Properties window"></p>