WinAPI: MessageBeep - 播放一个系统声音

        /// <summary>
        /// 调用系统声音
        /// </summary>
        /// <param name="wType">类型</param>
        /// <returns></returns>
        [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "MessageBeep")]
        public static extern int MessageBeep(int wType);
        //参数
        //private const int MB_ICONASTERISK = 0x40;
       

private const int MB_ICONSTOP = 16;          // Critical message; displays STOP icon.
        private const int MB_ICONQUESTION = 32;      // Warning query; displays ? icon.
        private const int MB_ICONEXCLAMATION = 48;   // Warning message; displays ! icon.
        private const int MB_ICONINFORMATION = 64;   // Information message; displays i icon.

        private const int MB_OK = 0;                // OK button only
        private const int MB_OKCANCEL = 1;           // OK and Cancel buttons
        private const int MB_ABORTRETRYIGNORE = 2;   // Abort, Retry, and Ignore buttons
        private const int MB_YESNOCANCEL = 3;        // Yes, No, and Cancel buttons
        private const int MB_YESNO = 4;              // Yes and No buttons
        private const int MB_RETRYCANCEL = 5;        // Retry and Cancel buttons

        private const int MB_APPLMODAL = 0;          // Application Modal Message Box
        private const int MB_DEFBUTTON1 = 0;         // First button is default
        private const int MB_DEFBUTTON2 = 256;       // Second button is default
        private const int MB_DEFBUTTON3 = 512;       // Third button is default
        private const int MB_SYSTEMMODAL = 4096;     // System Modal

 

        private void button7_Click(object sender, EventArgs e)
        {
            MessageBeep(MB_ICONASTERISK);
        }