private void Hook()
{
_handle = new WindowInteropHelper(this).EnsureHandle();
_window = new Native.Window(_handle);
UpdateNonClientBorder();
var source = HwndSource.FromHwnd(_handle);
if (source != null)
{
source.AddHook(WndProc);
}
}
private void OnLoadedInternal(object sender, RoutedEventArgs e)
{
if (Equals(WindowChrome.GetWindowChrome(this), _chrome) && _previousSizeToContent != SizeToContent.Manual)
{
SizeToContent = _previousSizeToContent;
_previousSizeToContent = SizeToContent.Manual;
if (WindowStartupLocation == WindowStartupLocation.CenterScreen)
{
Left = SystemParameters.VirtualScreenLeft + SystemParameters.PrimaryScreenWidth / 2 - ActualWidth / 2;
Top = SystemParameters.VirtualScreenTop + SystemParameters.PrimaryScreenHeight / 2 - ActualHeight / 2;
}
if (WindowStartupLocation == WindowStartupLocation.CenterOwner)
{
if (Owner != null)
{
if (Owner.WindowState == WindowState.Maximized)
{
var source = PresentationSource.FromVisual(Owner);
if (source != null && source.CompositionTarget != null)
{
var ownerHandle = new WindowInteropHelper(Owner).EnsureHandle();
var ownerWindow = new Native.Window(ownerHandle);
ownerWindow.Invalidate();
Left = -ownerWindow.NonClientBorderWidth * source.CompositionTarget.TransformFromDevice.M11;
Top = -ownerWindow.NonClientBorderHeight * source.CompositionTarget.TransformFromDevice.M22;
}
else
{
Left = 0;
Top = 0;
}
}
else
{
Left = Owner.Left;
Top = Owner.Top;
}
Left += Owner.ActualWidth / 2 - ActualWidth / 2;
Top += Owner.ActualHeight / 2 - ActualHeight / 2;
}
}
UpdateNonClientBorder();
if (_dispatcherFrame != null)
{
_dispatcherFrame.Continue = false;
}
}
}