写注册表

#define APPKEY "Software\\Microsoft\\test"
#define USERNAME "UserName"
#define USERAGE  "UserAge"
#define MAXNAMELENGTH 20

//写注册表
 HKEY hkey;
 DWORD dwAction;

 CString m_name="XXXX1111";
 DWORD m_age=0x00000001;

 //create/open the key
 if(RegCreateKeyEx(HKEY_CURRENT_USER,APPKEY,0L,NULL,REG_OPTION_NON_VOLATILE,\
  KEY_ALL_ACCESS,NULL,&hkey,&dwAction) != ERROR_SUCCESS)
 {
  AfxMessageBox("error create/open the key");
  return ;
 }
 //set the key写字符串值
 if(RegSetValueEx(hkey,USERNAME,0L,REG_SZ,(LPBYTE)(LPCTSTR)m_name,m_name.GetLength()+1) != ERROR_SUCCESS)
 {
  AfxMessageBox("error writing Username");
  return ;
 }
 //写入DWORD值
 if(RegSetValueEx(hkey,USERAGE,0,REG_DWORD,(LPBYTE)&m_age,sizeof(DWORD))!=ERROR_SUCCESS)
 {
  AfxMessageBox("error writing User age");
  return ;
 }
// RegDeleteValue(hkey,"UserName");//删除键值
//close the key
 RegCloseKey(hkey);