private static bool IsMainWindow(IntPtr windowHandle)
{
var style = (WindowStyles)User32Helpers.GetWindowLongPtr(windowHandle, WindowLongFlags.GWL_STYLE);
var isMinimized = (style & WindowStyles.WS_MINIMIZE) == WindowStyles.WS_MINIMIZE;
return
(User32Methods.IsWindow(windowHandle) &&
(User32Methods.IsWindowVisible(windowHandle) || isMinimized));
}