Untitled

C#: Invoke Windows Magnifier

private void ZoomIn()

{

    // Make sure the Magnifier is running, and get its handle

    if (Process.GetProcesses().Where(p => p.ProcessName.ToLower() == "magnify").Count() == 0) {

        Process.Start("magnify.exe");

        System.Threading.Thread.Sleep(500); }

    IntPtr handle = Process.GetProcesses().Where(p => p.ProcessName.ToLower() == "magnify").First().Handle;

 

    // Figure out what size ("mode") it's in

    WINDOWPLACEMENT placement = new WINDOWPLACEMENT();

    placement.length = Marshal.SizeOf(placement);

    GetWindowPlacement(handle, ref placement);

 

    // Move the Magnifier to a predetermined location so we know where to click

    MoveWindow(handle, new Point(0, 0));

 

    // If Magnifier is in small mode, click it to put it in big mode.

    if (placement.rcNormalPosition.Size.Width == 132) {

        SetCursorPos(15, 15);

        mouse_event((int)HardwareEvents.MouseLeftDown, 15, 15, 0, 0);

        mouse_event((int)HardwareEvents.MouseLeftUp, 15, 15, 0, 0); }

 

    // Click the zoom in button.  Yeah, I know, hackish. Isn't Win32 awesome?

    SetCursorPos(25, 25);

    mouse_event((int)HardwareEvents.MouseLeftDown, 25, 25, 0, 0);

    mouse_event((int)HardwareEvents.MouseLeftUp, 25, 25, 0, 0);

}

private void MoveWindow(IntPtr handle, Point point)

{

    // TODO: Figure out how to look up the target window's size

    SetWindowPos(handle, new IntPtr((int)SpecialWindowHandles.HWND_TOP), (int)point.X, (int)point.Y,  500, 500, SetWindowPosFlags.ShowWindow);

}

 

private struct WINDOWPLACEMENT {

    public int length;

    public int flags;

    public int showCmd;

    public System.Drawing.Point ptMinPosition;

    public System.Drawing.Point ptMaxPosition;

    public System.Drawing.Rectangle rcNormalPosition; }

 

[DllImport("user32.dll")]

static extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndl);

 

[DllImport("user32.dll")]

static extern bool SetCursorPos(int X, int Y);

 

 

public static class HardwareEvents

{

    public static int MouseMove = 0x0001;

    public static int MouseLeftDown = 0x0002, MouseLeftUp = 0x0004;

    public static int MouseRightDown = 0x0008, MouseRightUp = 0x0010; // best guess on the 0010

    public static int MiddleMouseDown = 0x20, MiddleMouseUp = 0x40;

    public static int MouseWheel = 0x800;

}

       

keybd_event(0x5B, 0x45, 0, new UIntPtr(0));

        keybd_event(0xBB, 0x45, 1, new UIntPtr(0));