private void Window_SourceInitialized(object sender, EventArgs e)
{
IntPtr windowHandle = (new WindowInteropHelper(this)).Handle;
HwndSource src = HwndSource.FromHwnd(windowHandle);
src.AddHook(new HwndSourceHook(WndProc));
try
{
m_SystemMenu = SystemMenu.FromWPFForm(this);
m_SystemMenu.AppendSeparator();
m_SystemMenu.AppendMenu(m_UrlID, "Copy Current URL");
}
catch (NoSystemMenuException)
{
}
}
