public static void Set(Window window, AccentState accentState, AccentFlags accentFlags)
{
var hwndSource = PresentationSource.FromVisual(window) as HwndSource;
if (hwndSource == null)
{
return;
}
var accent = new AccentPolicy
{
AccentState = accentState,
AccentFlags = accentFlags,
};
var accentStructSize = Marshal.SizeOf(accent);
var accentPtr = Marshal.AllocHGlobal(accentStructSize);
Marshal.StructureToPtr(accent, accentPtr, false);
var data = new WindowCompositionAttributeData
{
Attribute = WindowCompositionAttribute.WCA_ACCENT_POLICY,
SizeOfData = accentStructSize,
Data = accentPtr,
};
User32.SetWindowCompositionAttribute(hwndSource.Handle, ref data);
Marshal.FreeHGlobal(accentPtr);
}
internal static void SetAccentPolicy(IntPtr hWnd, AccentState accentState, AccentFlags accentFlags, uint gradientColor)
{
var accent = new AccentPolicy
{
AccentState = accentState,
AccentFlags = accentFlags,
AnimationId = 0,
GradientColor = gradientColor
};
var accentStructSize = Marshal.SizeOf(accent);
var accentPtr = Marshal.AllocHGlobal(accentStructSize);
Marshal.StructureToPtr(accent, accentPtr, false);
var data = new WindowCompositionAttributeData
{
Attribute = WindowCompositionAttribute.WCA_ACCENT_POLICY,
SizeOfData = accentStructSize,
Data = accentPtr
};
_SetWindowCompositionAttribute(hWnd, ref data);
Marshal.FreeHGlobal(accentPtr);
}
public static void DisableBlur(IntPtr hWnd, AccentState accentState, AccentFlags flags,
UsingColors gradientColor)
{
var hex = (uint)gradientColor;
NativeMethods.SetAccentPolicy(hWnd, accentState, flags, hex);
}
public static void EnableBlur(IntPtr hWnd, AccentFlags accentFlags, uint hex)
{
if (SystemParameters.HighContrast)
{
return; // Blur is not useful in high contrast mode
}
NativeMethods.SetAccentPolicy(hWnd, AccentState.ACCENT_ENABLE_BLURBEHIND, accentFlags, hex);
}
public static void EnableBlur(Window window, AccentFlags accentFlags)
{
var accentPolicy = new AccentPolicy
{
AccentState = AccentState.ACCENT_ENABLE_BLURBEHIND,
AccentFlags = accentFlags,
};
SetAccentPolicy(window, accentPolicy);
}
public static void EnableAcrylicBlur(Window window, Color backgroundColor, AccentFlags accentFlags)
{
var accentPolicy = new AccentPolicy
{
AccentState = AccentState.ACCENT_ENABLE_ACRYLICBLURBEHIND,
AccentFlags = accentFlags,
GradientColor = ColorHelper.GetColorAsUInt32(backgroundColor),
};
SetAccentPolicy(window, accentPolicy);
}
