C / C++ / MFC

// Console.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "crtdbg.h"
#include "conio.h"
#include "windows.h"
#include "winbase.h"
 
 
int main(int argc, char* argv[])
{
    HWND    hwnd = (HWND)  0x025c;
     
    INT Vk;
    INT Scan;
    CHAR character[2];
    CHAR oemchar[2];
    CHAR ch;
    do {
        while(!_kbhit());
        ch = getch();
        
        character[0]=ch;
        character[1]='\0';
        
        // Get the virtual key code for this character
        Vk = VkKeyScan(character[0]) & 0xFF;  
        CharToOem(character, oemchar);
        
        // Get the scan code for this key
        Scan = OemKeyScan(oemchar[0]) & 0xFF;
        
        // show the key:
        printf("Key = %c, VK code = %d, scan = %d\n", ch, Vk, Scan);
        
        UINT    lKeydata = 0;
 
        UINT    mask = 1;
        lKeydata |= mask;         // repeat count of 1;
        lKeydata |= Scan << 15;   // not really necessary for most apps
         
        ::PostMessage(hwnd, WM_KEYDOWN, Vk, lKeydata);
         
        lKeydata |= mask;         // repeat count of 1;
        lKeydata |= Scan << 15;
        lKeydata |= mask << 31;   // transition (fUp) is 1 for key up.
         
        ::PostMessage(hwnd, WM_KEYUP, Vk, lKeydata);
    }
    while(1);
    return 0;
}