有问题的"点击声音"实际上是系统范围的偏好,因此我只希望在我的应用程序具有焦点时禁用它,然后在应用程序关闭/失去焦点时重新启用它.
最初,我想在stackoverflow上问这个问题,但我还没有进入测试阶段.因此,在谷歌搜索答案并找到一点信息后,我想出了以下内容,并决定在此处发布,因为我已经进入测试版.
using System; using Microsoft.Win32; namespace HowTo { class WebClickSound { ////// Enables or disables the web browser navigating click sound. /// public static bool Enabled { get { RegistryKey key = Registry.CurrentUser.OpenSubKey(@"AppEvents\Schemes\Apps\Explorer\Navigating\.Current"); string keyValue = (string)key.GetValue(null); return String.IsNullOrEmpty(keyValue) == false && keyValue != "\"\""; } set { string keyValue; if (value) { keyValue = "%SystemRoot%\\Media\\"; if (Environment.OSVersion.Version.Major == 5 && Environment.OSVersion.Version.Minor > 0) { // XP keyValue += "Windows XP Start.wav"; } else if (Environment.OSVersion.Version.Major == 6) { // Vista keyValue += "Windows Navigation Start.wav"; } else { // Don't know the file name so I won't be able to re-enable it return; } } else { keyValue = "\"\""; } // Open and set the key that points to the file RegistryKey key = Registry.CurrentUser.OpenSubKey(@"AppEvents\Schemes\Apps\Explorer\Navigating\.Current", true); key.SetValue(null, keyValue, RegistryValueKind.ExpandString); isEnabled = value; } } } }
然后在主窗体中我们在这3个事件中使用上面的代码:
活性
停用
的FormClosing
private void Form1_Activated(object sender, EventArgs e) { // Disable the sound when the program has focus WebClickSound.Enabled = false; } private void Form1_Deactivate(object sender, EventArgs e) { // Enable the sound when the program is out of focus WebClickSound.Enabled = true; } private void Form1_FormClosing(object sender, FormClosingEventArgs e) { // Enable the sound on app exit WebClickSound.Enabled = true; }
我目前看到的一个问题是,如果程序崩溃,他们将无法获得点击声,直到他们重新启动我的应用程序,但他们不知道这样做.
你们有什么感想?这是一个好的解决方案吗?可以做些什么改进?
const int FEATURE_DISABLE_NAVIGATION_SOUNDS = 21; 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); }
我注意到如果您使用WebBrowser.Document.Write而不是WebBrowser.DocumentText,则不会发生咔嗒声.
所以不是这样的:
webBrowser1.DocumentText = "Hello, world!
";
试试这个:
webBrowser1.Document.OpenNew(true); webBrowser1.Document.Write("Hello, world!
");