C#获取当前系统的活动窗体和状态

目前获取的是句饼和窗体标题和最大化最小化状态.

 

使用

 

dataGridView1.DataSource = Tools.Sys.GetWindows.Load();

 

 

使用静态的方法就可以了.

具体类

 

using System;

using System.Collections.Generic;

using System.Text;

using System.Runtime.InteropServices;

namespace OpenCAD.Tools.Sys

{

   

    /// <summary>

    /// 获取全部窗体

    /// zgke@sina.com

    /// 2008-12-24

    /// </summary>

    public class GetWindows

    {

        public class WindowsInfo

        {

            private IntPtr m_Handle;

            /// <summary>

            /// 句柄

            /// </summary>

            public IntPtr Handle { get { return m_Handle; } set { m_Handle = value; } }

            private string m_Title;

            /// <summary>

            /// 标题

            /// </summary>

            public string Title { get { return m_Title; } set { m_Title = value; } }

            private bool m_IsMinimzed;

            /// <summary>

            /// 是否最小

            /// </summary>

            public bool IsMinimzed { get { return m_IsMinimzed; } set { m_IsMinimzed = value; } }

            private bool m_IsMaximized;

            /// <summary>

            /// 是否最大     

            /// </summary>

            public bool IsMaximized { get { return m_IsMaximized; } set { m_IsMaximized = value; } }

            public WindowsInfo()

            {

                m_Handle = IntPtr.Zero;

                m_Title = "";

                m_IsMinimzed = false;

                m_IsMaximized = false;

            }

            public WindowsInfo(IntPtr p_Handle, string p_Title, bool p_IsMinimized, bool p_IsMaximized)

            {

                this.m_Handle = p_Handle;

                this.m_Title = p_Title;

                this.m_IsMinimzed = p_IsMinimized;

                this.m_IsMaximized = p_IsMaximized;

            }

        }

        private static IList<WindowsInfo> _WindowsList = new List<WindowsInfo>();

        private static IntPtr _Statusbar;

        public delegate bool EnumWindowsProc(IntPtr p_Handle, int p_Param);

        private static bool NetEnumWindows(IntPtr p_Handle, int p_Param)

        {

            if (!API.IsWindowVisible(p_Handle))

                return true;

            StringBuilder _TitleString = new StringBuilder(256);

            API.GetWindowText(p_Handle, _TitleString, 256);

            if (string.IsNullOrEmpty(_TitleString.ToString())) 

            {

                return true;

            }         

            if (_TitleString.Length != 0 || (_TitleString.Length == 0) || p_Handle != _Statusbar)

            {

                _WindowsList.Add(new WindowsInfo(p_Handle, _TitleString.ToString(), API.IsIconic(p_Handle), API.IsZoomed(p_Handle)));

            }

            return true;

        }

        public static IList<WindowsInfo> Load()

        {

            _Statusbar = API.FindWindow("Shell_TrayWnd", "");

            EnumWindowsProc _EunmWindows = new EnumWindowsProc(NetEnumWindows);

            API.EnumWindows(_EunmWindows, 0);

            return _WindowsList;

        }

        private class API

        {

            [DllImport("user32.dll")]

            public static extern int EnumWindows(GetWindows.EnumWindowsProc ewp, int lParam);

            [DllImport("user32.dll")]

            public static extern bool IsWindowVisible(IntPtr hWnd);

            [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]

            public static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount);

            [DllImport("user32.dll")]

            [return: MarshalAs(UnmanagedType.Bool)]

            public static extern bool IsIconic(IntPtr hWnd);

            [DllImport("user32.dll")]

            public static extern bool IsZoomed(IntPtr hWnd);

            [DllImport("user32.dll", SetLastError = true)]

            public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

        }

    }

   

    

}