C#在主視窗嵌入子視窗

C#实现窗口"绑架" 所谓"绑架"就是把其他Win32程序的窗体嵌入到我们托管的WinForm

        [DllImport("user32.dll")]

        private static extern int SetParent(IntPtr hWndChild, IntPtr hWndParent);

        [DllImport("user32.dll")]

        private static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);

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

        private static extern bool PostMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);

        [DllImport("user32.dll", EntryPoint = "SetWindowPos")]

        private static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);

        [DllImport("user32.dll")]

        private static extern int SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);

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

        private static extern uint SetWindowLong(IntPtr hwnd, int nIndex, uint newLong);

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

        private static extern uint GetWindowLong(IntPtr hwnd, int nIndex);

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

        private static extern bool ShowWindow(IntPtr hWnd, short State);

        private const int HWND_TOP = 0x0;

        private const int WM_COMMAND = 0x0112;

        private const int WM_QT_PAINT = 0xC2DC;

        private const int WM_PAINT = 0x000F;

        private const int WM_SIZE = 0x0005;

        private const int SWP_FRAMECHANGED = 0x0020;

        public enum ShowWindowStyles : short

        {

            SW_HIDE = 0,

            SW_SHOWNORMAL = 1,

            SW_NORMAL = 1,

            SW_SHOWMINIMIZED = 2,

            SW_SHOWMAXIMIZED = 3,

            SW_MAXIMIZE = 3,

            SW_SHOWNOACTIVATE = 4,

            SW_SHOW = 5,

            SW_MINIMIZE = 6,

            SW_SHOWMINNOACTIVE = 7,

            SW_SHOWNA = 8,

            SW_RESTORE = 9,

            SW_SHOWDEFAULT = 10,

            SW_FORCEMINIMIZE = 11,

            SW_MAX = 11

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            Process p = new Process();

            // 需要启动的程序

            p.StartInfo.FileName = @"C:\Windows\System32\notepad.exe";

            // 为了美观,启动的时候最小化程序

            p.StartInfo.WindowStyle = ProcessWindowStyle.Minimized;

            // 启动

            p.Start();

            // 这里必须等待,否则启动程序的句柄还没有创建,不能控制程序

            Thread.Sleep(1000);

            // 最大化启动的程序

            ShowWindow(p.MainWindowHandle, (short)ShowWindowStyles.SW_MAXIMIZE);

            // 设置被绑架程序的父窗口

            SetParent(p.MainWindowHandle, this.Handle);

            // 改变尺寸

            ResizeControl(p);

        }

        // 控制嵌入程序的位置和尺寸

        private void ResizeControl(Process p)

        {

            SendMessage(p.MainWindowHandle, WM_COMMAND, WM_PAINT, 0);

            PostMessage(p.MainWindowHandle, WM_QT_PAINT, 0, 0);

            SetWindowPos(

                p.MainWindowHandle,

                HWND_TOP,

                0,  // 设置偏移量,把原来窗口的菜单遮住

                0,

                (int)this.Width,

                (int)this.Height,

                SWP_FRAMECHANGED);

            SendMessage(p.MainWindowHandle, WM_COMMAND, WM_SIZE, 0);

        }