public static void BlurWindow(System.Windows.Window window)
{
var winhelp = new WindowInteropHelper(window);
ACCENTPOLICY policy_Blur = new ACCENTPOLICY();
policy_Blur.nAccentState = ACCENT_ENABLE_BLURBEHIND;
policy_Blur.nFlags = 0;
policy_Blur.nColor = 0;
policy_Blur.nAnimationId = 0;
WINCOMPATTRDATA wINCOMPATTRDATA = new WINCOMPATTRDATA();
wINCOMPATTRDATA.nAttribute = WCA_ACCENT_POLICY;
IntPtr pData = Marshal.AllocHGlobal(Marshal.SizeOf(policy_Blur));
Marshal.StructureToPtr(policy_Blur, pData, false);
wINCOMPATTRDATA.pData = pData;
wINCOMPATTRDATA.ulDataSize = Marshal.SizeOf(policy_Blur);
SetWindowCompositionAttribute(winhelp.Handle, ref wINCOMPATTRDATA);
Marshal.FreeHGlobal(pData);
}
public static extern int SetWindowCompositionAttribute(IntPtr hwnd, ref WINCOMPATTRDATA data);