Question

我尝试使用WinAPI模拟一些关键事件。我想按一下WIN键，但我的代码无效。在示例中，我为每个过程使用VK_F1。

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;

namespace ConsoleApplication69
{
    class Program
    {
        const UInt32 WM_KEYDOWN = 0x0100;
        const UInt32 WM_KEYUP = 0x0101;
        const int VK_F1 = 112;

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);

        static void Main(string[] args)
        {
            Process[] processes = Process.GetProcesses();

            foreach (Process proc in processes)
            {
                SendMessage(proc.MainWindowHandle, WM_KEYDOWN, new IntPtr(VK_F1), IntPtr.Zero);
                SendMessage(proc.MainWindowHandle, WM_KEYUP, new IntPtr(VK_F1), IntPtr.Zero);
            }
        }
    }
}

Answer 1

要模拟键盘输入，请使用SendInput。这正是这个API的作用。 “将F1发送到每个窗口”并不是一个好主意，因为您将向没有键盘焦点的窗口发送击键。谁知道他们会如何回应。

键盘输入的细微差别比你要考虑的要多得多; See this question for considerations about emulating keyboard input

Answer 2

所以我使用了此网址中的代码：SendKeys.Send and Windows Key

它工作正常！

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

namespace ConsoleApplication69
{
    class Program
    {
        static void Main(string[] args)
        {
            KeyboardSend.KeyDown(Keys.LWin);
            KeyboardSend.KeyUp(Keys.LWin);
        }
    }

    static class KeyboardSend
    {
        [DllImport("user32.dll")]
        private static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);

        private const int KEYEVENTF_EXTENDEDKEY = 1;
        private const int KEYEVENTF_KEYUP = 2;

        public static void KeyDown(Keys vKey)
        {
            keybd_event((byte)vKey, 0, KEYEVENTF_EXTENDEDKEY, 0);
        }

        public static void KeyUp(Keys vKey)
        {
            keybd_event((byte)vKey, 0, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);


 }


}

}

tnx帮助大家！

模拟键盘事件不起作用C＃

2 个答案: