windows注册表的基本使用——示例

上网找好多资料发现一个问题就是太老。例如只有RegCreateKey而没有RegCreateKeyEx用法详解，自己摸索了几个小时终于基本用到的几个函数都试用了一遍。

下面代码已经通过编译测试

// test__regedit.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"

#include <windows.h>
#include <iostream>

#include <vld.h>

void test__create_regedit()
{
    LPCTSTR lpSubKeyGOCOM = TEXT("SOFTWARE\GoCom5.5");
    HKEY hKeyGOCOM = NULL;
    DWORD dwDisposition;//是否存在
    if ( ERROR_SUCCESS==::RegCreateKeyEx(HKEY_LOCAL_MACHINE, lpSubKeyGOCOM, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hKeyGOCOM, &dwDisposition) )
    {
        std::cout << "RegCreateKeyEx successful" << std::endl;
        if (REG_CREATED_NEW_KEY==dwDisposition)
        {
            std::cout << "key create" << std::endl;
        }
        else
        {
            std::cout << "key open" << std::endl;
        }

        LPCTSTR lpAutoRun = TEXT("auto_run");
        LPCTSTR lpAutoRunVal = TEXT("TRUE");
        if ( ERROR_SUCCESS==::RegSetValueEx(hKeyGOCOM, lpAutoRun, 0, REG_SZ, (BYTE*)lpAutoRunVal, (lstrlen(lpAutoRunVal)+1)*sizeof(TCHAR)) )
        {
            std::cout << "value successful" << std::endl;
        }
        else
        {
            std::cout << "value fail" << std::endl;
        }

        LPCTSTR lpAutoRun2 = TEXT("auto_run2");
        DWORD dw32AutoRunVal2 = 12;
        if ( ERROR_SUCCESS==::RegSetValueEx(hKeyGOCOM, lpAutoRun2, 0, REG_DWORD, (BYTE*)&dw32AutoRunVal2, sizeof(DWORD)) )
        {
            std::cout << "value2 successful" << std::endl;
        }
        else
        {
            std::cout << "value2 fail" << std::endl;
        }


        LPTSTR lpAutoRunValret = (LPTSTR)malloc(20*sizeof(TCHAR));
        DWORD cbAutoRunValret = 20*sizeof(TCHAR);
        ZeroMemory(lpAutoRunValret, 20);
        if ( ERROR_SUCCESS==::RegGetValue(HKEY_LOCAL_MACHINE, lpSubKeyGOCOM, lpAutoRun, RRF_RT_REG_SZ, NULL, lpAutoRunValret, &cbAutoRunValret) )
        {
            std::cout << "value get successful" << std::endl;
        }
        else
        {
            std::cout << "value get fail" << std::endl;
        }
        free(lpAutoRunValret);


        DWORD dwAutoRunValret2;
        DWORD cbAutoRunValret2 = sizeof(DWORD);
        if ( ERROR_SUCCESS==::RegGetValue(HKEY_LOCAL_MACHINE, lpSubKeyGOCOM, lpAutoRun2, RRF_RT_DWORD, NULL, (PVOID)&dwAutoRunValret2, &cbAutoRunValret2) )
        {
            std::cout << "value2 get successful" << dwAutoRunValret2 << std::endl;
        }
        else
        {
            std::cout << "value2 get fail" << std::endl;
        }


        LPTSTR lpAutoRunValret3 = (LPTSTR)malloc(20*sizeof(TCHAR));
        DWORD cbAutoRunValret3 = 20*sizeof(TCHAR);
        ZeroMemory(lpAutoRunValret, 20);
        if ( ERROR_SUCCESS==::RegSetValueEx(hKeyGOCOM, lpAutoRun, 0, RRF_RT_REG_SZ, (BYTE*)lpAutoRunValret3, cbAutoRunValret3) )
        {
            std::cout << "value get successful" << std::endl;
        }
        else
        {
            std::cout << "value get successful" << std::endl;
        }
        free(lpAutoRunValret);


        DWORD dwAutoRunValret4 = -1;
        DWORD cbAutoRunValret4 = sizeof(DWORD);
        if ( ERROR_SUCCESS==::RegSetValueEx(hKeyGOCOM, lpAutoRun, 0, RRF_RT_DWORD, (BYTE*)dwAutoRunValret4, cbAutoRunValret4) )
        {
            std::cout << "value2 get successful" << std::endl;
        }
        else
        {
            std::cout << "value2 get successful" << std::endl;
        }

    }
    else
    {
        std::cout << "RegCreateKeyEx fail" << std::endl;
    }
    if (hKeyGOCOM!=NULL)
    {
        ::RegCloseKey(hKeyGOCOM);
    }
}
void test__open_regedit()
{
    LPCTSTR lpSubKeyGOCOM = TEXT("SOFTWARE\GoCom5.5");
    HKEY hKeyGOCOM = NULL;
    if ( ERROR_SUCCESS==::RegOpenKeyEx(HKEY_LOCAL_MACHINE, lpSubKeyGOCOM, 0, KEY_ALL_ACCESS|KEY_READ|KEY_WRITE, &hKeyGOCOM) )
    {
        std::cout << "RegOpenKeyEx successful" << std::endl;
    }
    else
    {
        std::cout << "RegOpenKeyEx fail" << std::endl;
    }
    if (hKeyGOCOM!=NULL)
    {
        ::RegCloseKey(hKeyGOCOM);
    }
}

int _tmain(int argc, _TCHAR* argv[])
{
    test__open_regedit();
    test__create_regedit();
    return 0;
}

由于时间关系还有很多函数没有用到，等以后以机会在放上来吧（例如：RegQueryInfoKey等）