My google-fu has failed to find a solution to this one :( But surely it must a common problem, if indeed it is a problem.
Under Windows, how do you get rid of the one-pixel wide border around just a regular wx.Button? I'm trying to draw the button on top of a non-gray background, and it's a bit unsightly.
You can see the same borders in the wx demo, under "Core Window Controls -> Button". It's hard to see because the buttons are on a white background, but there is a one-pixel gray border around all of them.