遍历所有窗口句柄

using System; using System.Runtime.InteropServices; using System.Text; using System.Collections.Generic; class CSharpAPIsDemo { private delegate bool WNDENUMPROC(IntPtr hWnd, int lParam); [DllImport("user32.dll")] private static extern bool EnumWindows(WNDENUMPROC lpEnumFunc, int lParam); //[DllImport("user32.dll")] //private static extern IntPtr FindWindowW(string lpClassName, string lpWindowName); [DllImport("user32.dll")] private static extern int GetWindowTextW(IntPtr hWnd, [MarshalAs(UnmanagedType.LPWStr)]StringBuilder lpString, int nMaxCount); [DllImport("user32.dll")] private static extern int GetClassNameW(IntPtr hWnd, [MarshalAs(UnmanagedType.LPWStr)]StringBuilder lpString, int nMaxCount); public struct WindowInfo { public IntPtr hWnd; public string szWindowName; public string szClassName; } public WindowInfo[] GetAllDesktopWindows() { List wndList = new List(); //enum all desktop windows EnumWindows(delegate(IntPtr hWnd, int lParam) { WindowInfo wnd = new WindowInfo(); StringBuilder sb = new StringBuilder(256); //get hwnd wnd.hWnd = hWnd; //get window name GetWindowTextW(hWnd, sb, sb.Capacity); wnd.szWindowName = sb.ToString(); //get window class GetClassNameW(hWnd, sb, sb.Capacity); wnd.szClassName = sb.ToString(); //add it into list wndList.Add(wnd); return true; }, 0); return wndList.ToArray(); } }