注册表遍历操作
// EnumReg.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include <stdio.h>#include <Windows.h>int main(int argc, char* argv[]){HKEY hMainKey = HKEY_CURRENT_USER;HKEY hSubKey;//打开HKEY_CURRENT_USER\Control Panel键句柄，并获得枚举权限，以枚举其下面的子键LONG ReturnValue = RegOpenKeyEx (hMainKey, "Control Panel",0L, KEY_ENUMERATE_SUB_KEYS, &hSubKey);if (ReturnValue == ERROR_SUCCESS) //如果成功打开{FILETIME ftLastWriteTime; //用以保存最后一次写入时间SYSTEMTIME sysTime; //用以转化成系统时间TCHAR tcKeyName[128]; //用于保存每个子键的名字的内存空间DWORD dwKeyNameSize = 128;int i = 0, retCode = 0;printf("%-30s%-30s", "键名", "最后一次写入时间"); //打印标题行printf("\n");TCHAR tcBuffer[256] = {0};while (1){ //获取每个子键的名称retCode = RegEnumKeyEx(hSubKey, i, tcKeyName, &dwKeyNameSize,NULL, NULL, NULL, &ftLastWriteTime);if (retCode == ERROR_NO_MORE_ITEMS){ //如果获取结束则跳出循环break;}//将文件时间转化成系统时间FileTimeToSystemTime(&ftLastWriteTime, &sysTime);sprintf(tcBuffer, "%02d-%02d-%02d %02d:%02d:%02d", sysTime.wYear,sysTime.wMonth, sysTime.wDay,sysTime.wHour, sysTime.wMinute, sysTime.wSecond);printf("%-30s%-30s", tcKeyName, tcBuffer);printf("\n");dwKeyNameSize = 128;i++;}}return 0;}
// EnumReg2.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include <stdio.h>#include <tchar.h>#include <Windows.h>int main(int argc, char* argv[]){HKEY hMainKey = HKEY_CURRENT_USER;HKEY hSubKey;//打开HKEY_CURRENT_USER\Control Panel键句柄，并获得枚举和设置权限。LONG ReturnValue = ::RegOpenKeyEx (hMainKey, "Control Panel",0L, KEY_ENUMERATE_SUB_KEYS|KEY_QUERY_VALUE, &hSubKey);DWORD dwSubKeyCount = 0;if (ReturnValue == ERROR_SUCCESS) //如果成功打开{//查询HKEY_CURRENT_USER\Control Panel键下子键个数，不需要其他信息，所以其他参数统统传入NULL值。RegQueryInfoKey(hSubKey, NULL, NULL, NULL, &dwSubKeyCount,NULL, NULL, NULL, NULL, NULL, NULL, NULL);TCHAR tcKeyName[128] = {0}; //用于保存每个子键的名字的内存空间DWORD dwKeyNameSize = 128;for (int i=0; i<dwSubKeyCount; i++){ //循环获得每个子键的名字RegEnumKeyEx(hSubKey, i, tcKeyName, &dwKeyNameSize,NULL, NULL, NULL, NULL);printf("%s\n", tcKeyName);dwKeyNameSize=128;}}return 0;}
/* *************************************《精通Windows API》* 示例代码* reg.c* 10.3 注册表**************************************//* 头文件 */#include <windows.h>#include <stdio.h>#include <tchar.h>/* 预定义 */#define MAX_KEY_LENGTH 255#define MAX_VALUE_NAME 16383/* ************************************* void QueryKey(HKEY hKey)* 功能 列举指定注册表项的子键**************************************/void QueryKey(HKEY hKey){TCHAR achKey[MAX_KEY_LENGTH];DWORD cbName;TCHAR achClass[MAX_PATH] = TEXT("");DWORD cchClassName = MAX_PATH;DWORD cSubKeys=0;DWORD cbMaxSubKey;DWORD cchMaxClass;DWORD cValues;DWORD cchMaxValue;DWORD cbMaxValueData;DWORD cbSecurityDescriptor;FILETIME ftLastWriteTime;DWORD i, retCode;TCHAR achValue[MAX_VALUE_NAME];DWORD cchValue = MAX_VALUE_NAME;// 获取类名和数量retCode = RegQueryInfoKey(hKey, // 键的句柄achClass, // 类名&cchClassName, // 类名长度NULL, // 保留&cSubKeys, // 子键的数量&cbMaxSubKey, // 子键长度&cchMaxClass, // 类长度&cValues, // 子键键值数量&cchMaxValue, // 子键名长度&cbMaxValueData, // 键值长度&cbSecurityDescriptor, // 安全描述符&ftLastWriteTime); // 最后写时间// 列举子键if (cSubKeys){printf( "\nNumber of subkeys: %d\n", cSubKeys);for (i=0; i<cSubKeys; i++){cbName = MAX_KEY_LENGTH;retCode = RegEnumKeyEx(hKey, i,achKey,&cbName,NULL,NULL,NULL,&ftLastWriteTime);if (retCode == ERROR_SUCCESS){printf(TEXT("(%d) %s\n"), i+1, achKey);}}}// 列举键值if (cValues){printf( "\nNumber of values: %d\n", cValues);for (i=0, retCode=ERROR_SUCCESS; i<cValues; i++){cchValue = MAX_VALUE_NAME;achValue[0] = '\0';retCode = RegEnumValue(hKey, i,achValue,&cchValue,NULL,NULL,NULL,NULL);if (retCode == ERROR_SUCCESS ){printf(TEXT("(%d) %s\n"), i+1, achValue);}}}}/* ************************************* void AddKey(HKEY hKey)* 功能 增加一个子键，并设置键值**************************************/void AddKey(HKEY hKey){HKEY hSubKey;DWORD dwKeyValue = 100;// 创建键RegCreateKey(hKey,"MySoftware",&hSubKey);// 设置键值if( ERROR_SUCCESS != RegSetValueEx(hSubKey,"TEST",0,REG_DWORD,(LPBYTE)&dwKeyValue,sizeof(DWORD))){printf("error\n");}}/* ************************************* void main(void)* 功能 打开键，获得键句柄**************************************/void main(void){HKEY hTestKey;if( RegOpenKeyEx( HKEY_CURRENT_USER,TEXT("SOFTWARE"),0,KEY_READ | KEY_WRITE,&hTestKey) == ERROR_SUCCESS){// 增加键AddKey(hTestKey);// 列举子键QueryKey(hTestKey);}}
AddKey()函数：
