想实现当用户输入一串字母后弹出一个窗口，用于后台配置，用什么方法检测用户任意时刻输入一串字母
如题：“做一个Debug窗口，当用户输入一串字母后弹出一个窗口，用于后台配置”，对于任意时刻，检测用户输入一串特定的字母，用什么方法做最简单？我知道键盘钩子可以实现，有没有什么其它简单的方法？
[解决办法]
就是全局键盘钩子
[解决办法]
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Diagnostics;
namespace WebClick_Tool
{
public class KeyPress_o
{
[StructLayout(LayoutKind.Sequential)]
public class KeyBoardHookStruct
{
public int vkCode;
public int scanCode;
public int flags;
public int time;
public int dwExtraInfo;
}
//委托
public delegate int HookProc(int nCode, int wParam, IntPtr lParam);
static int hHook = 0;
public const int WH_KEYBOARD_LL = 13;
//LowLevel键盘截获，如果是WH_KEYBOARD＝2，并不能对系统键盘截取，Acrobat Reader会在你截取之前获得键盘。
static HookProc KeyBoardHookProcedure;
//设置钩子
[DllImport("user32.dll")]
public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
//抽掉钩子
public static extern bool UnhookWindowsHookEx(int idHook);
[DllImport("user32.dll")]
//调用下一个钩子
public static extern int CallNextHookEx(int idHook, int nCode, int wParam, IntPtr lParam);
[DllImport("kernel32.dll")]
public static extern int GetCurrentThreadId();
[DllImport("kernel32.dll")]
public static extern IntPtr GetModuleHandle(string name);
public static void Hook_Start()
{
if (hHook == 0)
{
KeyBoardHookProcedure = new HookProc(KeyBoardHookProc);
hHook = SetWindowsHookEx(WH_KEYBOARD_LL, KeyBoardHookProcedure,
GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName), 0);
//如果设置钩子失败.
if (hHook == 0)
{
Hook_Clear();
}
}
}
/// <summary>
/// 取消钩子事件
/// </summary>
public static void Hook_Clear()
{
bool retKeyboard = true;
if (hHook != 0)
{
retKeyboard = UnhookWindowsHookEx(hHook);
hHook = 0;
}
}
public static int KeyBoardHookProc(int nCode, int wParam, IntPtr lParam)
{
if (nCode >= 0)
{
KeyBoardHookStruct kbh = (KeyBoardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyBoardHookStruct));
Keys k = (Keys)Enum.Parse(typeof(Keys), kbh.vkCode.ToString());
switch (k)
{
case Keys.F2:
if (kbh.flags == 0)
{
// 这里写按下后做什么事
//Main.GB = true;
MainForm.Fs(FormBorderStyle.FixedSingle);
MainForm.StopAll = true;
MainForm.DisMes("停止...");
MainForm.Enb(true);
}
else if (kbh.flags == 128)
{
//放开后做什么事
}
return 1;
}
}
return CallNextHookEx(hHook, nCode, wParam, lParam);
}
}
}
[解决办法]
/// <summary>
/// 键盘Hook管理类
/// </summary>
public class KeyHook
{
private const int WH_KEYBOARD_LL = 13; //键盘
private const int WM_KEYDOWN = 0x0108;
private const int WM_SYSKEYDOWN = 0x0104;
//键盘处理事件委托.
private delegate int HookHandle(int nCode, int wParam, IntPtr lParam);
//客户端键盘处理事件
public delegate void ProcessKeyHandle(HookStruct param, out bool handle);
//接收SetWindowsHookEx返回值
private static int _hHookValue = 0;
//勾子程序处理事件
private static HookHandle _KeyBoardHookProcedure;
//Hook结构
[StructLayout(LayoutKind.Sequential)]
public class HookStruct
{
public int vkCode;
public int scanCode;
public int flags;
public int time;
public int dwExtraInfo;
}
//设置钩子
[DllImport("user32.dll")]
private static extern int SetWindowsHookEx(int idHook, HookHandle lpfn, IntPtr hInstance, int threadId);
//取消钩子
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
private static extern bool UnhookWindowsHookEx(int idHook);
//调用下一个钩子
[DllImport("user32.dll")]
private static extern int CallNextHookEx(int idHook, int nCode, int wParam, IntPtr lParam);
//获取当前线程ID
[DllImport("kernel32.dll")]
private static extern int GetCurrentThreadId();
//Gets the main module for the associated process.
[DllImport("kernel32.dll")]
private static extern IntPtr GetModuleHandle(string name);
private IntPtr _hookWindowPtr = IntPtr.Zero;
//外部调用的键盘处理事件
private static ProcessKeyHandle _clientMethod = null;
/// <summary>
/// 安装勾子
/// <summary>
/// <param name="hookProcess">外部调用的键盘处理事件</param>
public void InstallHook(ProcessKeyHandle clientMethod)
{
_clientMethod = clientMethod;
// 安装键盘钩子
if (_hHookValue == 0)
{
_KeyBoardHookProcedure = new HookHandle(GetHookProc);
_hookWindowPtr = GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName);
_hHookValue = SetWindowsHookEx(WH_KEYBOARD_LL, _KeyBoardHookProcedure, _hookWindowPtr, 0);
//如果设置钩子失败.
if (_hHookValue == 0)
UninstallHook();
}
}
//取消钩子事件
public void UninstallHook()
{
if (_hHookValue != 0)
{
bool ret = UnhookWindowsHookEx(_hHookValue);
if (ret) _hHookValue = 0;
}
}
//钩子事件内部调用,调用_clientMethod方法转发到客户端应用。
private static int GetHookProc(int nCode, int wParam, IntPtr lParam)
{
if (nCode >= 0)
{
//转换结构
HookStruct hookStruct = (HookStruct)Marshal.PtrToStructure(lParam, typeof(HookStruct));
if (_clientMethod != null)
{
bool handle = false;
//调用客户提供的事件处理程序。
_clientMethod(hookStruct, out handle);
if (handle) return 1; //1:表示拦截键盘,return 退出
}
}
return CallNextHookEx(_hHookValue, nCode, wParam, lParam);
}
}