gtk - Xwt.GtkBackend 中缺少 DLL

Question

public static class GtkInterop
{
    internal const string LIBATK          = "libatk-1.0-0.dll";
    internal const string LIBGLIB         = "libglib-2.0-0.dll";
    internal const string LIBGOBJECT      = "libgobject-2.0-0.dll";
    internal const string LIBPANGO        = "libpango-1.0-0.dll";
    internal const string LIBPANGOCAIRO   = "libpangocairo-1.0-0.dll";
    internal const string LIBFONTCONFIG   = "fontconfig";

    #if XWT_GTK3
    internal const string LIBGTK          = "libgtk-3-0.dll";
    internal const string LIBGDK          = "libgdk-3-0.dll";
    internal const string LIBGTKGLUE      = "gtksharpglue-3";
    internal const string LIBGLIBGLUE     = "glibsharpglue-3";
    internal const string LIBWEBKIT       = "libwebkitgtk-3.0-0.dll";
    #else
    internal const string LIBGTK          = "libgtk-win32-2.0-0.dll";
    internal const string LIBGDK          = "libgdk-win32-2.0-0.dll";
    internal const string LIBGTKGLUE      = "gtksharpglue-2";
    internal const string LIBGLIBGLUE     = "glibsharpglue-2";
    internal const string LIBWEBKIT       = "libwebkitgtk-1.0-0.dll";
    #endif
}

有熟悉 Monodevelop 和 Xwt 的人知道如何获取这些 dll 吗？当我尝试使用 Xwt 的 webview 时出现错误。