/************************************************************************************ *                       InpOut32 InputTest.cpp hacking * 说明： *     跟一下InputTest.cpp中InpOut32怎么使用。 * *                                               2017-6-5 深圳 龙华樟坑村 曾剑锋 ***********************************************************************************/// InpoutTest.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include "windows.h"#include "stdio.h"// 函数类型指针定义typedef void    (__stdcall *lpOut32)(short, short);typedef short    (__stdcall *lpInp32)(short);typedef BOOL    (__stdcall *lpIsInpOutDriverOpen)(void);typedef BOOL    (__stdcall *lpIsXP64Bit)(void);//Some global function pointers (messy but fine for an example)// 函数指针声明，gfpOut32 = global function pointer Inpout32lpOut32 gfpOut32;lpInp32 gfpInp32; lpIsInpOutDriverOpen gfpIsInpOutDriverOpen;lpIsXP64Bit gfpIsXP64Bit;/** * 下面链接中有解释以下Beep、StopBeep代码中的含义: *     How does the following code make PC beeps? *         https://stackoverflow.com/questions/5987683/how-does-the-following-code-make-pc-beeps */void Beep(unsigned int freq){    gfpOut32(0x43, 0xB6);    gfpOut32(0x42, (freq & 0xFF));    gfpOut32(0x42, (freq >> 9));    Sleep(10);    gfpOut32(0x61, gfpInp32(0x61) | 0x03);}void StopBeep(){    gfpOut32(0x61, (gfpInp32(0x61) & 0xFC));}int main(int argc, char* argv[]){    if(argc<3)    {        //too few command line arguments, show usage        printf("Error : too few arguments\n\n***** Usage *****\n\nInpoutTest read 
 \nor \nInpoutTest write 
 \n\n\n\n\n");    }     else    {        //Dynamically load the DLL at runtime (not linked at compile time)        // 在运行的时候动态加载DLL        HINSTANCE hInpOutDll ;        hInpOutDll = LoadLibrary ( "InpOut32.DLL" ) ;    //The 32bit DLL. If we are building x64 C++                                                         //applicaiton then use InpOutx64.dll        if ( hInpOutDll != NULL )        {            // 获取函数操作指针            gfpOut32 = (lpOut32)GetProcAddress(hInpOutDll, "Out32");            gfpInp32 = (lpInp32)GetProcAddress(hInpOutDll, "Inp32");            gfpIsInpOutDriverOpen = (lpIsInpOutDriverOpen)GetProcAddress(hInpOutDll, "IsInpOutDriverOpen");            gfpIsXP64Bit = (lpIsXP64Bit)GetProcAddress(hInpOutDll, "IsXP64Bit");            if (gfpIsInpOutDriverOpen())            {                //Make some noise through the PC Speaker - hey it can do more that a single beep using InpOut32                // 制造一些不同频率的噪声                Beep(2000);                Sleep(200);                Beep(1000);                Sleep(300);                Beep(2000);                Sleep(250);                StopBeep();                if(!strcmp(argv[1],"read"))                {                    // 字符串转数字，并读取相关地址上的数据                    short iPort = atoi(argv[2]);                    WORD wData = gfpInp32(iPort);    //Read the port                    printf("Data read from address %s is %d \n\n\n\n", argv[2], wData);                }                else if(!strcmp(argv[1],"write"))                {                    if(argc<4)                    {                        printf("Error in arguments supplied");                        printf("\n***** Usage *****\n\nInpoutTest read 
 \nor \nInpoutTest write 
 \n\n\n\n\n"); } else { // 字符串转数字，并写入数据到相关地址上 short iPort = atoi(argv[2]); WORD wData = atoi(argv[3]); gfpOut32(iPort, wData); printf("data written to %s\n\n\n", argv[2]); } } } else { printf("Unable to open InpOut32 Driver!\n"); } //All done FreeLibrary ( hInpOutDll ) ; return 0; } else { printf("Unable to load InpOut32 DLL!\n"); return -1; } } return -2;}