使用输入模拟器答案

【问题标题】：using InputSimulator使用输入模拟器
【发布时间】：2017-09-08 11:25:14
【问题描述】：

尝试使用InputSimulator 来模拟键盘输入。除了使用sim.Keyboard.ModifiedKeyStroke 模拟ASCII 字符的输入之外，一切正常。

我尝试使用以下两种不同的方式模拟Alt down + numpad1 + numpad4 + numpad7 + Alt up：

    sim.Keyboard.ModifiedKeyStroke(VirtualKeyCode.LMENU, new[] { VirtualKeyCode.NUMPAD1, VirtualKeyCode.NUMPAD4, VirtualKeyCode.NUMPAD7});

和

    sim.Keyboard.KeyDown(VirtualKeyCode.LMENU);
    sim.Keyboard.KeyDown(VirtualKeyCode.NUMPAD1);
    sim.Keyboard.KeyUp(VirtualKeyCode.NUMPAD1);
    sim.Keyboard.KeyDown(VirtualKeyCode.NUMPAD4);
    sim.Keyboard.KeyUp(VirtualKeyCode.NUMPAD4);
    sim.Keyboard.KeyDown(VirtualKeyCode.NUMPAD7);
    sim.Keyboard.KeyUp(VirtualKeyCode.NUMPAD7);
    sim.Keyboard.KeyUp(VirtualKeyCode.LMENU);

两者都不起作用。我尝试在控制台打印出按键状态，真实按键和模拟按键都给出相同的结果：

   LMenu key down
   NumPad1 key down
   NumPad1 key up
   NumPad4 key down
   NumPad4 key up
   NumPad7 key down
   NumPad7 key up
   LMenu key up

我认为应该是库的一些问题：issue 1。有人可以帮我吗？有没有其他方法可以做到这一点？

更新 1

我发现“Alt+Tab”在 Win8 中也不起作用。我认为这可能是相同的原因，所以我尝试先解决这个问题。原来它们是两个不同的问题：

要使“Alt+Tab”正常工作，我需要在“app.manifest”中设置uiAccess=true，并使用测试数字签名对“.exe”文件进行签名；
模拟ASCII字符的输入还是不行。

【问题讨论】：

标签： c# wpf

【解决方案1】：

使用keybd_event 和MapVirtualKey 或者如果使用SendInput 添加到INPUT 的扫描MapVirtualKey。

这是两者的例子，

using System;
using System.Threading;
using System.Runtime.InteropServices;

namespace kbd_events_example
{
    static class Program
    {
        #pragma warning disable 649
        internal struct INPUT
        {
            public UInt32 Type;
            public KEYBOARDMOUSEHARDWARE Data;
        }
        [StructLayout(LayoutKind.Explicit)]
        //This is KEYBOARD-MOUSE-HARDWARE union INPUT won't work if you remove MOUSE or HARDWARE
        internal struct KEYBOARDMOUSEHARDWARE
        {
            [FieldOffset(0)]
            public KEYBDINPUT Keyboard;
            [FieldOffset(0)]
            public HARDWAREINPUT Hardware;
            [FieldOffset(0)]
            public MOUSEINPUT Mouse;
        }
        internal struct KEYBDINPUT
        {
            public UInt16 Vk;
            public UInt16 Scan;
            public UInt32 Flags;
            public UInt32 Time;
            public IntPtr ExtraInfo;
        }
        internal struct MOUSEINPUT
        {
            public Int32 X;
            public Int32 Y;
            public UInt32 MouseData;
            public UInt32 Flags;
            public UInt32 Time;
            public IntPtr ExtraInfo;
        }
        internal struct HARDWAREINPUT
        {
            public UInt32 Msg;
            public UInt16 ParamL;
            public UInt16 ParamH;
        }
        #pragma warning restore 649
        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.Winapi)]
        static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, uint extraInfo);
        [DllImport("user32.dll", SetLastError = true)]
        static extern int MapVirtualKey(uint uCode, uint uMapType);
        [DllImport("user32.dll", SetLastError = true)]
        static extern UInt32 SendInput(UInt32 numberOfInputs, INPUT[] inputs, Int32 sizeOfInputStructure);
        enum VK
        {
            MENU = 0x12,
            NUMPAD0 = 0x60,
            NUMPAD1 = 0x61,
            NUMPAD2 = 0x62,
            NUMPAD3 = 0x63,
            NUMPAD4 = 0x64,
            NUMPAD5 = 0x65,
            NUMPAD6 = 0x66,
            NUMPAD7 = 0x67,
            NUMPAD8 = 0x68,
            NUMPAD9 = 0x69
        }
        const uint KEYEVENTF_KEYUP = 0x0002;
        public const int INPUT_KEYBOARD = 1;
        [STAThread]
        static void Main()
        {
            Thread.Sleep(5000); //wait 5 seconds, so you can focus the Notepad
            keybd_event((int)VK.MENU, (byte)MapVirtualKey((uint)VK.MENU, 0), 0, 0); //Alt Press  
            keybd_event((int)VK.NUMPAD1, (byte)MapVirtualKey((uint)VK.NUMPAD1, 0), 0, 0); // N1 Press  
            keybd_event((int)VK.NUMPAD1, (byte)MapVirtualKey((uint)VK.NUMPAD1, 0), KEYEVENTF_KEYUP, 0); // N1 Release  
            keybd_event((int)VK.MENU, (byte)MapVirtualKey((uint)VK.MENU, 0), KEYEVENTF_KEYUP, 0); // Alt Release    
            Thread.Sleep(2000); //wait 2 seconds
            INPUT[] inputs = new INPUT[] {
                new INPUT {Type = INPUT_KEYBOARD, Data = new KEYBOARDMOUSEHARDWARE { Keyboard = new KEYBDINPUT { Vk = (ushort)VK.MENU, Flags = 0, Scan = (ushort)MapVirtualKey((uint)VK.MENU, 0), ExtraInfo = IntPtr.Zero, Time = 0}}},
                new INPUT {Type = INPUT_KEYBOARD, Data = new KEYBOARDMOUSEHARDWARE { Keyboard = new KEYBDINPUT { Vk = (ushort)VK.NUMPAD2, Flags = 0, Scan = (ushort)MapVirtualKey((uint)VK.NUMPAD2, 0), ExtraInfo = IntPtr.Zero, Time = 0}}},
                new INPUT {Type = INPUT_KEYBOARD, Data = new KEYBOARDMOUSEHARDWARE { Keyboard = new KEYBDINPUT { Vk = (ushort)VK.NUMPAD2, Flags = 2, Scan = (ushort)MapVirtualKey((uint)VK.NUMPAD2, 0), ExtraInfo = IntPtr.Zero, Time = 0}}},
                new INPUT {Type = INPUT_KEYBOARD, Data = new KEYBOARDMOUSEHARDWARE { Keyboard = new KEYBDINPUT { Vk = (ushort)VK.MENU, Flags = 2, Scan = (ushort)MapVirtualKey((uint)VK.MENU, 0), ExtraInfo = IntPtr.Zero, Time = 0}}}
            };
            SendInput((uint)inputs.Length, inputs, Marshal.SizeOf(typeof(INPUT)));
        }
    }
}

至于InputSimulator，您需要使用SendInput 或keybd_event 和MapVirtualKey 编写自己的类来处理输入...

【讨论】：