Microsoft has addressed it since WinForms 1.0, except that it's unfortunately not automatic. You need to include a simple application manifest that enables the dpiAware flag, as described here: http://msdn.microsoft.com/en-us/library/dd464660%28v=VS.85%2...

That article stops short of Windows 8.1 which provides new multi-monitor options. Here's the latest manifest overview: http://blogs.msdn.com/b/chuckw/archive/2013/09/10/manifest-m...