C# 禁止WebBrowser网页跳转时发出的声音

    const int FEATURE_DISABLE_NAVIGATION_SOUNDS = ;
    const int SET_FEATURE_ON_PROCESS = 0x00000002;  

    [DllImport("urlmon.dll")]
    [PreserveSig]
    [return: MarshalAs(UnmanagedType.Error)]
    static extern int CoInternetSetFeatureEnabled(
        int FeatureEntry,
        [MarshalAs(UnmanagedType.U4)] int dwFlags,
        bool fEnable);  

    static void DisableClickSounds()
    {
        CoInternetSetFeatureEnabled(
            FEATURE_DISABLE_NAVIGATION_SOUNDS,
            SET_FEATURE_ON_PROCESS,
            true);
    }  

默认情况下，IE内核的网页浏览框(WebBrowser、CHtmlView、CHtmlDialog等控件)在跳转网页、点击按钮时会发出声音，用CoInternetSetFeatureEnabled这个API可以禁止掉。