《VC++实战》之从ini配置文件获取配置与保存配置

 

在工程目录下有配置文件connconfig.ini,内容如下:

《VC++实战》之从ini配置文件获取配置与保存配置

 

1 从ini文件获取配置信息

获取字符串数据使用GetPrivateProfileString,获取整形数据使用GetPrivateProfileInt,下面是微软官方API函数原型:

Note  This function is provided only for compatibility with 16-bit Windows-based applications. Applications should store initialization information in the registry.

DWORD GetPrivateProfileString(
  LPCTSTR lpAppName,
  LPCTSTR lpKeyName,
  LPCTSTR lpDefault,
  LPTSTR  lpReturnedString,
  DWORD   nSize,
  LPCTSTR lpFileName
);

Note  This function is provided only for compatibility with 16-bit Windows-based applications. Applications should store initialization information in the registry.

UINT GetPrivateProfileInt(
  LPCTSTR lpAppName,
  LPCTSTR lpKeyName,
  INT     nDefault,
  LPCTSTR lpFileName
);

void GetUserConfig(CString fileName, int &id, CString &user, CString &password)
{
	//配置文件在工程目录
	CString strModule;
	GetModuleFileName(NULL, strModule.GetBuffer(MAX_PATH), MAX_PATH);
	//注:使用该API函数得到的是程序文件完整路径文件名,去掉文件名后才是路径。
	strModule.ReleaseBuffer();
	int pos = strModule.ReverseFind('\\');
	CString strDir;
	strDir = strModule.Left(pos);
	if( strDir.Right(1) != "\\" )
	{
		strDir += "\\" ;
	}

	CString strIniDir = strDir + fileName;

	int  tempId=0;
	char tempUser[MAX_PATH]={0};
	char tempPassword[MAX_PATH]={0};

	//获取int型数据
	id = GetPrivateProfileInt(_T("UserInfo"), _T("id"),0,strIniDir);
	//获取String型数据
	GetPrivateProfileString(_T("UserInfo"), _T("user"),"",tempUser,MAX_PATH,strIniDir);
	GetPrivateProfileString(_T("UserInfo"), _T("password"),"",tempPassword,MAX_PATH,strIniDir);
	
	user = tempUser;
	password = tempPassword;
}

使用示例:

        CString configFile("connconfig.ini");

	int id;
	CString user;
	CString password
	GetUserConfig(configFile, id, user, password);

2 保存配置信息到ini文件

保存配置信息使用WritePrivateProfileString,既WritePrivateProfileStringA

Note  This function is provided only for compatibility with 16-bit versions of Windows. Applications should store initialization information in the registry.

BOOL WritePrivateProfileStringA(
  LPCSTR lpAppName,
  LPCSTR lpKeyName,
  LPCSTR lpString,
  LPCSTR lpFileName
);

void SaveUserConfig(CString fileName, int &id, CString &user, CString &password)
{
	//配置文件在工程目录
	CString strModule;
	GetModuleFileName(NULL, strModule.GetBuffer(MAX_PATH), MAX_PATH);
	//注:使用该API函数得到的是程序文件完整路径文件名,去掉文件名后才是路径。
	strModule.ReleaseBuffer();
	int pos = strModule.ReverseFind('\\');
	CString strDir;
	strDir = strModule.Left(pos);
	if( strDir.Right(1) != "\\" )
	{
		strDir += "\\" ;
	}

	CString strIniDir = strDir + fileName;

	//将int数据转为Cstring类型
	CString idStr;
	idStr.Format("%d",type);
	
	WritePrivateProfileString(_T("UserInfo"), _T("id"),id.GetBuffer(0),strIniDir);
	WritePrivateProfileString(_T("UserInfo"), _T("user"),user.GetBuffer(0),strIniDir);
	WritePrivateProfileString(_T("UserInfo"), _T("password"),password.GetBuffer(0),strIniDir);
}

使用示例:

        CString configFile("connconfig.ini");

	int id = 100;
	CString user = "bob";
	CString password = "123456";
	SaveUserConfig(configFile, id, user, password);

 

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