只要心中有梦的博客

c++运算符优先级 优先级 操作符 描述 例子 结合性 1 () [] -> . :: ++ -- 调节优先级的括号操作符 数组下标访问操作符 通过指向对象的指针访问成员的操作符 通过对象本身访问成员的操作符 作用域操作符 后置自增操作符 后置自减操作符 (a + b) / 4; array[4] = 2; ptr->age = 34; obj.age = 34; Class::age = 2; for( i = 0; i 0; i-- ) ... 从左到右 2 ! ~ ++ -- - + * & (type) sizeof 逻辑取反操作符 按位取反(按位取补) 前置自增操作符 前置自减操作符 一元取负操作符 一元取正操作符 解引用操作符 取地址操作符 类型转换操作符 返回对象占用的字节数操作符 if( !done ) ... flags = ~flags; for( i = 0; i 0; --i ) ... int i = -1; int i = +1; data = *ptr; address = &obj; int i = (int) floatNum; int size = sizeof(floatNum); 从右到左

C#屏蔽Windows快捷键及任务管理器 public delegate int HookProc(int nCode, int wParam, IntPtr lParam); private static int hHook = 0; public const int WH_KEYBOARD_LL = 13; //LowLevel键盘截获，如果是WH_KEYBOARD＝2，并不能对系统键盘截取，会在你截取之前获得键盘。 private static HookProc KeyBoardHookProcedure; //键盘Hook结构函数 [StructLayout(LayoutKind.Sequential)] public class KeyBoardHookStruct { public int vkCode; public int scanCode; public int flags; public int time; public int dwExtraInfo; } //设置钩子 [DllImport("user32.dll")] public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId); [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] //抽掉钩子 public static extern bool UnhookWindowsHookEx(int idHook); [DllImport("user32.dll")] //调用下一个钩子 public static extern int CallNextHookEx(int idHook, int nCode, int wParam, IntPtr lParam); [DllImport("kernel32.dll")] public static extern int GetCurrentThreadId();

搜索局域网内IPCamera设备 public Receiver() { _thread = new Thread( delegate() { // Create the client UDP socket. Listing on port 9003 IPEndPoint endPoint = new IPEndPoint(IPAddress.Any, 9003); UdpClient client = new UdpClient(endPoint); // Receive the packets asynchronously. client.BeginReceive( new AsyncCallback(OnPacketReceived), new UdpState() { Client = client, EndPoint = endPoint }); // Wait for the thread to end. _shutdownThread.WaitOne(); } ); }

SVN1.7.11-win32客户端 包含语言包

SQLServer实用SQL语句大全,好东西