Ejemplo n.º 1
0
        public static void initialize()
        {
            #region
            PrintVisibleWindowsHandle.PrintVisibleWindowHandles(2);
            W32.SendMessageTimeout(progman,
                                   0x052C,
                                   new IntPtr(0),
                                   IntPtr.Zero,
                                   W32.SendMessageTimeoutFlags.SMTO_NORMAL,
                                   1000,
                                   out result);
            PrintVisibleWindowsHandle.PrintVisibleWindowHandles(2);
            W32.EnumWindows(new W32.EnumWindowsProc((tophandle, topparamhandle) =>
            {
                IntPtr p = W32.FindWindowEx(tophandle,
                                            IntPtr.Zero,
                                            "SHELLDLL_DefView",
                                            IntPtr.Zero);
                if (p != IntPtr.Zero)
                {
                    workerw = W32.FindWindowEx(IntPtr.Zero,
                                               tophandle,
                                               "WorkerW",
                                               IntPtr.Zero);
                }
                return(true);
            }), IntPtr.Zero);

            #endregion
        }
Ejemplo n.º 2
0
        public void test()
        {
            PrintVisibleWindowsHandle.PrintVisibleWindowHandles(2);

            #region
            // The output will look something like this.
            // .....
            // 0x00010190 "" WorkerW
            //   ...
            //   0x000100EE "" SHELLDLL_DefView
            //     0x000100F0 "FolderView" SysListView32
            // 0x000100EC "Program Manager" Progman



            // Fetch the Progman window
            IntPtr progman = W32.FindWindow("Progman", null);

            IntPtr result = IntPtr.Zero;

            // Send 0x052C to Progman. This message directs Progman to spawn a
            // WorkerW behind the desktop icons. If it is already there, nothing
            // happens.
            W32.SendMessageTimeout(progman,
                                   0x052C,
                                   new IntPtr(0),
                                   IntPtr.Zero,
                                   W32.SendMessageTimeoutFlags.SMTO_NORMAL,
                                   1000,
                                   out result);
            #endregion

            PrintVisibleWindowsHandle.PrintVisibleWindowHandles(2);
            // The output will look something like this
            // .....
            // 0x00010190 "" WorkerW
            //   ...
            //   0x000100EE "" SHELLDLL_DefView
            //     0x000100F0 "FolderView" SysListView32
            // 0x00100B8A "" WorkerW                                   <--- This is the WorkerW instance we are after!
            // 0x000100EC "Program Manager" Progman

            IntPtr workerw = IntPtr.Zero;

            // We enumerate all Windows, until we find one, that has the SHELLDLL_DefView
            // as a child.
            // If we found that window, we take its next sibling and assign it to workerw.
            W32.EnumWindows(new W32.EnumWindowsProc((tophandle, topparamhandle) =>
            {
                IntPtr p = W32.FindWindowEx(tophandle,
                                            IntPtr.Zero,
                                            "SHELLDLL_DefView",
                                            IntPtr.Zero);

                if (p != IntPtr.Zero)
                {
                    // Gets the WorkerW Window after the current one.
                    workerw = W32.FindWindowEx(IntPtr.Zero,
                                               tophandle,
                                               "WorkerW",
                                               IntPtr.Zero);
                }

                return(true);
            }), IntPtr.Zero);

            // We now have the handle of the WorkerW behind the desktop icons.
            // We can use it to create a directx device to render 3d output to it,
            // we can use the System.Drawing classes to directly draw onto it,
            // and of course we can set it as the parent of a windows form.
            //
            // There is only one restriction. The window behind the desktop icons does
            // NOT receive any user input. So if you want to capture mouse movement,
            // it has to be done the LowLevel way (WH_MOUSE_LL, WH_KEYBOARD_LL).


            #region
            // Demo 1: Draw graphics between icons and wallpaper

            // Get the Device Context of the WorkerW
            IntPtr dc = W32.GetDCEx(workerw, IntPtr.Zero, (W32.DeviceContextValues) 0x403);
            if (dc != IntPtr.Zero)
            {
                // Create a Graphics instance from the Device Context
                using (Graphics g = Graphics.FromHdc(dc))
                {
                    // Use the Graphics instance to draw a white rectangle in the upper
                    // left corner. In case you have more than one monitor think of the
                    // drawing area as a rectangle that spans across all monitors, and
                    // the 0,0 coordinate beeing in the upper left corner.
                    g.FillRectangle(new SolidBrush(Color.White), 0, 0, 500, 500);
                }
                // make sure to release the device context after use.
                W32.ReleaseDC(workerw, dc);
            }

            #endregion
            #region

            // Demo 2: Demo 2: Put a Windows Form behind desktop icons

            Form form = new Form();
            form.Text = "Test Window";

            form.Load += new EventHandler((s, e) =>
            {
                // Move the form right next to the in demo 1 drawn rectangle
                form.Width  = 500;
                form.Height = 500;
                form.Left   = 500;
                form.Top    = 0;

                #region

                Button button = new Button()
                {
                    Text = "Catch Me"
                };
                form.Controls.Add(button);
                Random rnd = new Random();
                System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer();
                timer.Interval = 100;
                timer.Tick    += new EventHandler((sender, eventArgs) =>
                {
                    button.Left = rnd.Next(0, form.Width - button.Width);
                    button.Top  = rnd.Next(0, form.Height - button.Height);
                });
                timer.Start();

                #endregion

                // Those two lines make the form a child of the WorkerW,
                // thus putting it behind the desktop icons and out of reach
                // for any user intput. The form will just be rendered, no
                // keyboard or mouse input will reach it. You would have to use
                // WH_KEYBOARD_LL and WH_MOUSE_LL hooks to capture mouse and
                // keyboard input and redirect it to the windows form manually,
                // but thats another story, to be told at a later time.

                W32.SetParent(form.Handle, workerw);
            });
            // Start the Application Loop for the Form.
            Application.Run(form);
            #endregion
        }