Smooth edges of non-rectangular form in .NET

Question

I\'ve created a form with rounded corners using Form.Region. It works, but unfortunately the rounding appears rough. Are there any tricks for smoothing such shaped form corn

Answer 1

There is no good fix for this, regions cannot be anti-aliased. This is inevitable, anti-aliasing only works when you know the background colors so you can blend properly. That's not an option for windows, the background is by design unpredictable. If this is a splash screen then you can fake it by taking a screen shot of the background and drawing your fake window on top of it. Won't work for more than a few seconds.

Best thing to do is to keep the corner radius small so it is not so noticeable. Also use a tool like SysInternals' ZoomIt and take a close look at the rounded corners of a program like Windows Media Player. Note the gray tones it uses to draw the border.