Question

我正在使用Leap Motion Controller创建一个C＃Windows应用程序。我正在使用Windows 8和Visual Studio 2010进行开发。我使用SetCursorPos中的mouse_event和user32.dll移动光标并模拟点击。

我希望在任何应用程序中移动光标。当我从Visual Studio运行/调试它时，它只在应用程序本身或Visual Studio中工作。在其他应用程序中，鼠标不移动，点击不起作用，但如果我尝试用真正的鼠标移动光标，它会返回到它所在的位置。独立运行时，它不会在Visual Studio中移动，鼠标可以在其他应用程序中使用真实鼠标移动。

我将此代码用于SetCursorPos和mouse_event：

[DllImport("user32.dll")]
public static extern long SetCursorPos(int x, int y);

[DllImport("User32.Dll")]
public static extern void mouse_event(uint dwFlags, uint dx, uint dy, uint cButtons, uint dwExtraInfo);

public static void MouseClick(uint x, uint y) {
    mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, x, y, 0, 0);
}

在我的表单类中，我将鼠标位置存储在两个字段中。在Timer的勾选中，我设置光标位置并按照以下步骤进行必要的点击：

if (!frame.Hands.IsEmpty) {
    Hand hand = frame.Hands.Leftmost;
    if (!hand.Fingers.IsEmpty) {
        // Get coordinates...
        SetCursorPos(mousex, mousey);
    }
}
foreach (Gesture gesture : gestures) {
    if (gesture.Type == Gesture.GestureType.TYPESCREENTAP) {
        MouseClick(mousex, mousey);
    }
}

if语句适用于Leap设备;我想移动鼠标，只有当有一只手拿到坐标时才做其他东西。

是否可以移动光标或模拟其他应用程序的鼠标点击？如果是，怎么样？

Answer 1

你激励我重构一些自动化代码：

NativeMethods.cs - 从网上获得大部分内容：

using System;
using System.Runtime.InteropServices;

public class NativeMethods
{
   [DllImport( "user32.dll", SetLastError = true )]
   internal static extern Int32 SendInput( Int32 cInputs, ref INPUT pInputs, Int32 cbSize );

   [StructLayout( LayoutKind.Explicit, Pack = 1, Size = 28 )]
   internal struct INPUT
   {
      [FieldOffset( 0 )] public InputType dwType;
      [FieldOffset( 4 )] public MOUSEINPUT mi;
      [FieldOffset( 4 )] public KEYBDINPUT ki;
      [FieldOffset( 4 )] public HARDWAREINPUT hi;
   }

   [StructLayout( LayoutKind.Sequential, Pack = 1 )]
   internal struct MOUSEINPUT
   {
      public Int32 dx;
      public Int32 dy;
      public Int32 mouseData;
      public MOUSEEVENTF dwFlags;
      public Int32 time;
      public IntPtr dwExtraInfo;
   }

   [StructLayout( LayoutKind.Sequential, Pack = 1 )]
   internal struct KEYBDINPUT
   {
      public Int16 wVk;
      public Int16 wScan;
      public KEYEVENTF dwFlags;
      public Int32 time;
      public IntPtr dwExtraInfo;
   }

   [StructLayout( LayoutKind.Sequential, Pack = 1 )]
   internal struct HARDWAREINPUT
   {
      public Int32 uMsg;
      public Int16 wParamL;
      public Int16 wParamH;
   }

   internal enum InputType : int
   {
      Mouse = 0,
      Keyboard = 1,
      Hardware = 2
   }

   [Flags()]
   internal enum MOUSEEVENTF : int
   {
      MOVE = 0x1,
      LEFTDOWN = 0x2,
      LEFTUP = 0x4,
      RIGHTDOWN = 0x8,
      RIGHTUP = 0x10,
      MIDDLEDOWN = 0x20,
      MIDDLEUP = 0x40,
      XDOWN = 0x80,
      XUP = 0x100,
      VIRTUALDESK = 0x400,
      WHEEL = 0x800,
      ABSOLUTE = 0x8000
   }

   [Flags()]
   public enum KEYEVENTF : int
   {
      EXTENDEDKEY = 1,
      KEYUP = 2,
      UNICODE = 4,
      SCANCODE = 8
   }

   /// <summary>The MapVirtualKey function translates (maps) a virtual-key code into a scan
   /// code or character value, or translates a scan code into a virtual-key code
   /// </summary>
   /// <param name="uCode">[in] Specifies the virtual-key code or scan code for a key.
   /// How this value is interpreted depends on the value of the uMapType parameter</param>
   /// <param name="uMapType">[in] Specifies the translation to perform. The value of this
   /// parameter depends on the value of the uCode parameter.</param>
   /// <returns>Either a scan code, a virtual-key code, or a character value, depending on
   /// the value of uCode and uMapType. If there is no translation, the return value is zero</returns>
   /// <remarks></remarks>
   [DllImport( "User32.dll", SetLastError = false, CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto )]
   public static extern UInt32 MapVirtualKey( UInt32 uCode, MapVirtualKeyMapTypes uMapType );


   /// <summary>The set of valid MapTypes used in MapVirtualKey
   /// </summary>
   /// <remarks></remarks>
   public enum MapVirtualKeyMapTypes : uint
   {
      /// <summary>uCode is a virtual-key code and is translated into a scan code.
      /// If it is a virtual-key code that does not distinguish between left- and
      /// right-hand keys, the left-hand scan code is returned.
      /// If there is no translation, the function returns 0.
      /// </summary>
      /// <remarks></remarks>
      MAPVK_VK_TO_VSC = 0x0,

      /// <summary>uCode is a scan code and is translated into a virtual-key code that
      /// does not distinguish between left- and right-hand keys. If there is no
      /// translation, the function returns 0.
      /// </summary>
      /// <remarks></remarks>
      MAPVK_VSC_TO_VK = 0x1,

      /// <summary>uCode is a virtual-key code and is translated into an unshifted
      /// character value in the low-order word of the return value. Dead keys (diacritics)
      /// are indicated by setting the top bit of the return value. If there is no
      /// translation, the function returns 0.
      /// </summary>
      /// <remarks></remarks>
      MAPVK_VK_TO_CHAR = 0x2,

      /// <summary>Windows NT/2000/XP: uCode is a scan code and is translated into a
      /// virtual-key code that distinguishes between left- and right-hand keys. If
      /// there is no translation, the function returns 0.
      /// </summary>
      /// <remarks></remarks>
      MAPVK_VSC_TO_VK_EX = 0x3,

      /// <summary>Not currently documented
      /// </summary>
      /// <remarks></remarks>
      MAPVK_VK_TO_VSC_EX = 0x4
   }

}

MouseInput.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;

namespace SendInput
{
   public class MouseInput
   {
      public static void LeftClick()
      {
         DoMouse( NativeMethods.MOUSEEVENTF.LEFTDOWN, new System.Drawing.Point( 0, 0 ) );
         DoMouse( NativeMethods.MOUSEEVENTF.LEFTUP, new System.Drawing.Point( 0, 0 ) );
      }

      public static void LeftClick( int x, int y )
      {
         DoMouse( NativeMethods.MOUSEEVENTF.MOVE | NativeMethods.MOUSEEVENTF.ABSOLUTE, new System.Drawing.Point( x, y ) );
         DoMouse( NativeMethods.MOUSEEVENTF.LEFTDOWN, new System.Drawing.Point( x, y ) );
         DoMouse( NativeMethods.MOUSEEVENTF.LEFTUP, new System.Drawing.Point( x, y ) );
      }

      public static void ClickBoundingRectangleByPercentage( int xPercentage, int yPercentage, System.Drawing.Rectangle bounds )
      {
         double additional = 0.0;
         if ( xPercentage == 99 )
            additional = 0.5;
         int xPixel = Convert.ToInt32( bounds.Left + bounds.Width * ( xPercentage + additional ) / 100 );
         int yPixel = Convert.ToInt32( bounds.Top + bounds.Height * ( yPercentage ) / 100 );
         LeftClick( xPixel, yPixel );
      }

      public static void RightClick()
      {
         DoMouse( NativeMethods.MOUSEEVENTF.RIGHTDOWN, new System.Drawing.Point( 0, 0 ) );
         DoMouse( NativeMethods.MOUSEEVENTF.RIGHTUP, new System.Drawing.Point( 0, 0 ) );
      }

      public static void RightClick( int x, int y )
      {
         DoMouse( NativeMethods.MOUSEEVENTF.MOVE | NativeMethods.MOUSEEVENTF.ABSOLUTE, new System.Drawing.Point( x, y ) );
         DoMouse( NativeMethods.MOUSEEVENTF.RIGHTDOWN, new System.Drawing.Point( x, y ) );
         DoMouse( NativeMethods.MOUSEEVENTF.RIGHTUP, new System.Drawing.Point( x, y ) );
      }

      public static void MoveMouse( Point p )
      {
         MoveMouse( p.X, p.Y );
      }

      public static void MoveMouse( System.Windows.Point p )
      {
         MoveMouse( Convert.ToInt32( p.X ), Convert.ToInt32( p.Y ) );
      }

      public static void MoveMouse( int x, int y )
      {
         DoMouse( NativeMethods.MOUSEEVENTF.MOVE | NativeMethods.MOUSEEVENTF.ABSOLUTE, new System.Drawing.Point( x, y ) );
      }

      public static System.Drawing.Point GetMousePosition()
      {
         return Cursor.Position;
      }

      public static void ScrollWheel( int scrollSize )
      {
         DoMouse( NativeMethods.MOUSEEVENTF.WHEEL, new System.Drawing.Point( 0, 0 ), scrollSize );
      }

      private static void DoMouse( NativeMethods.MOUSEEVENTF flags, Point newPoint, int scrollSize = 0 )
      {
         NativeMethods.INPUT input = new NativeMethods.INPUT();
         NativeMethods.MOUSEINPUT mi = new NativeMethods.MOUSEINPUT();
         input.dwType = NativeMethods.InputType.Mouse;
         input.mi = mi;
         input.mi.dwExtraInfo = IntPtr.Zero;
         // mouse co-ords: top left is (0,0), bottom right is (65535, 65535)
         // convert screen co-ord to mouse co-ords...
         input.mi.dx = newPoint.X * 65535 / Screen.PrimaryScreen.Bounds.Width;
         input.mi.dy = newPoint.Y * 65535 / Screen.PrimaryScreen.Bounds.Height;
         input.mi.time = 0;
         input.mi.mouseData = scrollSize * 120;
         // can be used for WHEEL event see msdn
         input.mi.dwFlags = flags;
         int cbSize = Marshal.SizeOf( typeof ( NativeMethods.INPUT ) );
         int result = NativeMethods.SendInput( 1, ref input, cbSize );
         if ( result == 0 )
            Debug.WriteLine( Marshal.GetLastWin32Error() );
      }
   }
}

Answer 2

是的，您想使用“SendInput”功能。

请参阅：SendInput doesn't perform click mouse button unless I move cursor

此外，

http://www.pinvoke.net/default.aspx/user32.sendinput

和

http://www.pinvoke.net/default.aspx/Structures/INPUT.html

我修复了第一个超链接 - 请参阅以下评论：

使用SendInput功能时，您应该考虑以下几点。

如果未指定MOUSEEVENTF_ABSOLUTE标志，则dx和dy（MouseInputData结构）是当前鼠标位置的相对坐标。如果确实指定了MOUSEEVENTF_ABSOLUTE，则dx和dy是0到65535之间的绝对坐标。因此，如果x和y坐标是屏幕坐标，则应使用以下函数计算dx和dy：

和

http://msdn.microsoft.com/en-us/library/ms646310%28VS.85%29.aspx

Answer 3

我自己设法解决了这个问题。

有两个问题。第一个（也是主要的）是Leap设备在后台运行时没有向我的应用程序发送帧。通过将此代码添加到侦听器的onConnect()方法，修复了此问题，建议 here ：

controller.SetPolicyFlags(Controller.PolicyFlag.POLICYBACKGROUNDFRAMES);

第二个问题是，当独立运行时，应用程序无权将输入发送到其他应用程序。我按照 here （向下滚动，有关于uiAccess的信息）和 here 的说明并签署了我的申请并将其添加到清单：

<requestedExecutionLevel level="asInvoker" uiAccess="true" />

如何移动光标或模拟其他应用程序的点击？

3 个答案: