/// <summary>
/// Enables blur behind window.
/// </summary>
/// <param name="enable">Set to <c>true</c> to enable blur behind window. Set to <c>false</c> to disable blur behind window.</param>
/// <returns><c>true</c> if succeeds; otherwise, <c>false</c>.</returns>
public bool EnableBlurBehindWindow(bool enable = true)
{
if (!IsCompositionEnabled)
return false;
IntPtr hwnd = new WindowInteropHelper(Window).EnsureHandle();
var bb = new DWM_BLURBEHIND
{
dwFlags = DWM_BLURBEHIND.DWM_BB_ENABLE | DWM_BLURBEHIND.DWM_BB_BLURREGION,
fEnable = enable,
hRegionBlur = IntPtr.Zero
};
try
{
NativeMethods.DwmEnableBlurBehindWindow(hwnd, ref bb);
return true;
}
catch (Exception ex)
{
Debug.WriteLine(ex);
return false;
}
finally
{
NativeMethods.DeleteObject(bb.hRegionBlur);
}
}
internal static extern void DwmEnableBlurBehindWindow(IntPtr hwnd, ref DWM_BLURBEHIND blurBehind);
internal static extern void DwmEnableBlurBehindWindow(IntPtr hwnd, ref DWM_BLURBEHIND blurBehind);