How to read and write INI configuration files (summary)

We may often use the configuration file INI file to obtain or save the parameter information, in the VC its functions are mainly used in:

• Read

1. Read characters
   

   DWORD GetPrivateProfileString (
   LPCTSTR lpappname, //INI file a field name [section name] can have a number of section names

   LPCTSTR lpkeyname, //Lpappname A key name, that is, the specific variable name inside

   LPCTSTR lpdefault, //If lpreturnedstring is empty, assign a variable to lpreturnedstring

   LPTSTR lpreturnedstring, //pointer variable holding key value, receive buffer for receiving key values (data) in INI file

   DWORD nSize, //lpreturnedstring buffer size

   LPCTSTR path to lpFileName//INI file
   );

3. Read integer value (the return value is read to the whole)

   UINT Getprivateprofileint (

   LPCTSTR lpappname, //INI file a field name [section name] can have a number of section names
   LPCTSTR lpkeyname, //Lpappname A key name, that is, the specific variable name inside
   INT ndefault, //If the specified data return is not found, assign a variable value to the return value

   LPCTSTR path to lpFileName//INI file

   );

• Write

1. Write characters
   

   BOOL WritePrivateProfileString (
   LPCTSTR lpappname, //INI file a field name [section name] can have a number of section names

   LPCTSTR lpkeyname, //Lpappname A key name, that is, the specific variable name inside

   LPCTSTR lpstring, //key value, i.e. data

   LPCTSTR path to lpFileName//INI file
   );

2. Write integral type

• Read and write INI file relative path and absolute path can be, according to the actual situation to choose

".. \\IniFileName.ini "//This is a relative path

"D:\\inifilename.ini"//such as absolute path

• MAX_PATH: is the macro set by Microsoft's largest path-occupied byte

　　The INI file written is divided into: section, key name, key value

Give me a chestnut:

Xx.ini

[Serial port configuration]

Baud Rate =19200

With the theory, take a look at the demo of Practice:

• Write INI file:  

LPTSTR Lppath = new Char[max_path];

strcpy (Lppath, "D:\\inifilename.ini");

WritePrivateProfileString ("Liming", "Sex", "Man", Lppath);
WritePrivateProfileString ("Liming", "Age", "a", "Lppath");

WritePrivateProfileString ("Fangfang", "Sex", "Woman", Lppath);
WritePrivateProfileString ("Fangfang", "Age", "$", Lppath);

delete [] lppath;

INI file is as follows:

[Liming]
Sex=man
Age=20
[Fangfang]
Sex=woman
Age=21

• Read INI file:

LPTSTR Lppath = new Char[max_path];
LPTSTR limingsex = new Char[6];
int limingage;
LPTSTR fangfangsex = new Char[6];
int fangfangage;

strcpy (Lppath, "... \\IniFileName.ini ");

GetPrivateProfileString ("Liming", "Sex", "" ", Limingsex, 6, Lppath);
Limingage = Getprivateprofileint ("Liming", "age", 0, Lppath);

GetPrivateProfileString ("Fangfang", "Sex", "" ", Fangfangsex, 6, Lppath);
Fangfangage = Getprivateprofileint ("Fangfang", "age", 0, Lppath);

delete [] lppath;

How to read and write INI configuration files (summary)