internal static extern int SetWindowCompositionAttribute(IntPtr hwnd, ref WINCOMPATTRDATA data);
public static extern int SetWindowCompositionAttribute(IntPtr hwnd, ref WINCOMPATTRDATA data);
private void SetBlurEffect()
{
Background = new SolidColorBrush(Color.FromArgb(0x90, 0xFF, 0xFF, 0xFF));
WindowStyle = WindowStyle.None;
var interopHelper = new WindowInteropHelper(this);
var accentPolicy = new ACCENTPOLICY
{
nAccentState = 3
};
var accentPolicySize = Marshal.SizeOf(accentPolicy);
var accentPolicyPtr = Marshal.AllocHGlobal(accentPolicySize);
Marshal.StructureToPtr(accentPolicy, accentPolicyPtr, false);
var winCompatData = new WINCOMPATTRDATA
{
nAttribute = 19,
ulDataSize = accentPolicySize,
pData = accentPolicyPtr
};
NativeMethods.SetWindowCompositionAttribute(interopHelper.Handle, ref winCompatData);
Marshal.FreeHGlobal(accentPolicyPtr);
}