Question

我正在尝试创建一个应用程序，该应用程序将以设定的间隔（ms）在后台向应用程序（通过进程或窗口）发送按键。我在这个主题上找到了一些不同的答案，但我需要一个ELI5（像我这样解释）答案。作为测试，我使用以下代码将密钥发送到记事本。

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace TextSendKeys
{
    class Program
    {
        [DllImport("user32.dll")]
        static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

        static void Main(string[] args)
        {
            Process notepad = new Process();
            notepad.StartInfo.FileName = @"C:\Windows\Notepad.exe";
            notepad.Start();

            // Need to wait for notepad to start
            notepad.WaitForInputIdle();

            IntPtr p = notepad.MainWindowHandle;
            ShowWindow(p, 1);
            SendKeys.SendWait("ABC");
        }
    }
}

此代码允许我将击键发送到记事本。它打开记事本，但不能在后台执行。

答案

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


namespace TextSendKeys
{
    class Program
    {

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool SetForegroundWindow(IntPtr hWnd);

    static void Main(string[] args)
    {
        Process[] processes = Process.GetProcessesByName("process name here");
        Process game1 = processes[0];

        IntPtr p = game1.MainWindowHandle;

        SetForegroundWindow(p);
        SendKeys.SendWait("{1}");
        Thread.Sleep(1000);
        SendKeys.SendWait("{1}");

        }
    }
}

Answer 1

在C# // SendKeys.SendWait works only when process'es window is minimzed

找到答案

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


namespace TextSendKeys
{
    class Program
    {

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool SetForegroundWindow(IntPtr hWnd);

    static void Main(string[] args)
    {
        Process[] processes = Process.GetProcessesByName("process name here");
        Process game1 = processes[0];

        IntPtr p = game1.MainWindowHandle;

        SetForegroundWindow(p);
        SendKeys.SendWait("{1}");
        Thread.Sleep(1000);
        SendKeys.SendWait("{1}");

        }
    }
}

Sendkey到后台程序

1 个答案: