private void WmDpiChanged(ref Message m)
{
var oldDeviceDpi = _deviceDpi;
var newDeviceDpi = Win32.SignedHIWORD(m.WParam);
var suggestedRect = (RECT)Marshal.PtrToStructure(m.LParam, typeof(RECT));
ScaleFactor = DpiHelper.GetScaleFactorForCurrentWindow(Handle);
_deviceDpi = newDeviceDpi;
var maxSizeState = MaximumSize;
var minSizeState = MinimumSize;
MinimumSize = Size.Empty;
MaximumSize = Size.Empty;
User32.SetWindowPos(Handle, IntPtr.Zero, suggestedRect.left, suggestedRect.top, suggestedRect.Width, suggestedRect.Height, SetWindowPosFlags.SWP_NOZORDER | SetWindowPosFlags.SWP_NOACTIVATE);
var scaleFactor = (float)newDeviceDpi / oldDeviceDpi;
MinimumSize = DpiHelper.CalcScaledSize(minSizeState, new SizeF(scaleFactor, scaleFactor));
MaximumSize = DpiHelper.CalcScaledSize(maxSizeState, new SizeF(scaleFactor, scaleFactor));
OnWmDpiChanged(oldDeviceDpi, newDeviceDpi, suggestedRect.ToRectangle());
}