c# - 如何从 Word 2010 插件(用 C# 开发)获取 "KeyPress"事件？

Question

如何从使用 C# 开发的 Word 2010 插件“捕获”KeyPress 事件？

注意:我不是在寻找诸如 Hook 之类的“复杂”解决方案，而是为了美观整洁.NET 甚至来自对象模型。

我“掌握”的应用对象是:

Microsoft.Office.Interop.Word.Application

最好的问候

Answer 1

不幸的是，Word API 或 VSTO 中没有任何内置的东西可以获取击键，可以找到更多关于这方面的信息 here

一段时间以来，我一直在寻找可行的解决方案，但我能想到的最好办法是使用 Hook 通过 Windows API 处理它，您很可能会得出相同的结论，所以这里有一个例子:

您需要将 using 指令添加到以下程序集:

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

这里是钩子(Hook):

   public partial class ThisAddIn
    {
        private const int WH_KEYBOARD_LL = 13;
        private const int WM_KEYDOWN = 0x0100;

        private static IntPtr hookId = IntPtr.Zero;
        private delegate IntPtr HookProcedure(int nCode, IntPtr wParam, IntPtr lParam);
        private static HookProcedure procedure = HookCallback;

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr GetModuleHandle(string lpModuleName);

        [DllImport("user32.dll", SetLastError = true)]
        private static extern bool UnhookWindowsHookEx(IntPtr hhk);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr SetWindowsHookEx(int idHook, HookProcedure lpfn, IntPtr hMod, uint dwThreadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);  

        private void ThisAddIn_Startup(object sender, System.EventArgs e)
        {
            hookId = SetHook(procedure);
        }

        private void ThisAddIn_Shutdown(object sender, System.EventArgs e)
        {
            UnhookWindowsHookEx(hookId);
        }

        private static IntPtr SetHook(HookProcedure procedure)
        {
            using (Process process = Process.GetCurrentProcess())
            using (ProcessModule module = process.MainModule)
                return SetWindowsHookEx(WH_KEYBOARD_LL, procedure, GetModuleHandle(module.ModuleName), 0);
        }

        private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
        {
            if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
            {
                int pointerCode = Marshal.ReadInt32(lParam);
                string pressedKey = ((Keys)pointerCode).ToString();

                //Do some sort of processing on key press
                var thread = new Thread(() => { MessageBox.Show(pressedKey); });
                thread.Start();
            }
            return CallNextHookEx(hookId, nCode, wParam, lParam);
        }

        private void InternalStartup()
        {
            this.Startup += new System.EventHandler(ThisAddIn_Startup);
            this.Shutdown += new System.EventHandler(ThisAddIn_Shutdown);
        }
    }