Occurs when layout causes the HwndSource to automatically resize.
public event AutoResizedEventHandler AutoResized
The native behavior of HwndSource is to automatically resize content and the window region based on changes reported through the WPF layout system. The window does not resize if it is currently minimized or if SizeToContent is set to Manual.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2