.ini文件是windows程序的配置文件，其结构为：
;以分号开头的行为注释行 ;[]括起来的行为章节名，后续的”key-value对“都属该章节 [section 1] ;等号前面的相当于key，等号后面的相当于value User Name=John User Id=1 [section 2] Position=Position 1
相关函数均位于Winbase.h中，函数命名上均包含***PrivateProfile***，例如：GetPrivateProfileInt()，意思是读取.ini文件中的一个整数。
- 从动作上分成两类：
- PrivateProfile前面的是Get，都是读取
- PrivateProfile前面的是Write，都是写入
- 从操作对象上分成5类：
- PrivateProfile后面的是Int，表示读出指定章节的指定key对应的整数
- PrivateProfile后面的是Section，表示读出的是指定章节的所有key-value对
- PrivateProfile后面的是SectionNames，表示读出的是所有的章节名
- PrivateProfile后面的是String，表示读出的是指定章节、指定key的value
- PrivateProfile后面的是Struct，表示按照一定的结构，将指定章节的所有key对应的value一并读出来
- 常用参数命名的含义，例如
UINT GetPrivateProfileInt( LPCTSTR lpAppName, //指定的章节名 LPCTSTR lpKeyName, //指定的key INT nDefault, //如果未发现这个key，返回该缺省值 LPCTSTR lpFileName //.ini文件的绝对路径+文件名。这里要注意：必须是.ini文件的绝对路径+文件名.ini );
读取函数列表：
| GetPrivateProfileInt Retrieves an integer associated with a key in the specified section of an initialization file. |
| GetPrivateProfileIntA Retrieves an integer associated with a key in the specified section of an initialization file. |
| GetPrivateProfileIntW Retrieves an integer associated with a key in the specified section of an initialization file. |
| GetPrivateProfileSection Retrieves all the keys and values for the specified section of an initialization file. |
| GetPrivateProfileSectionA Retrieves all the keys and values for the specified section of an initialization file. |
| GetPrivateProfileSectionNames Retrieves the names of all sections in an initialization file. |
| GetPrivateProfileSectionNamesA Retrieves the names of all sections in an initialization file. |
| GetPrivateProfileSectionNamesW Retrieves the names of all sections in an initialization file. |
| GetPrivateProfileSectionW Retrieves all the keys and values for the specified section of an initialization file. |
| GetPrivateProfileString Retrieves a string from the specified section in an initialization file. |
| GetPrivateProfileStringA Retrieves a string from the specified section in an initialization file. |
| GetPrivateProfileStringW Retrieves a string from the specified section in an initialization file. |
| GetPrivateProfileStruct Retrieves the data associated with a key in the specified section of an initialization file. |
| GetPrivateProfileStructA Retrieves the data associated with a key in the specified section of an initialization file. |
| GetPrivateProfileStructW Retrieves the data associated with a key in the specified section of an initialization file. |
写入函数列表：
| WritePrivateProfileSectionA Replaces the keys and values for the specified section in an initialization file. |
| WritePrivateProfileSectionW Replaces the keys and values for the specified section in an initialization file. |
| WritePrivateProfileStringA Copies a string into the specified section of an initialization file. |
| WritePrivateProfileStringW Copies a string into the specified section of an initialization file. |
| WritePrivateProfileStructA Copies data into a key in the specified section of an initialization file. As it copies the data, the function calculates a checksum and appends it to the end of the data. |
| WritePrivateProfileStructW Copies data into a key in the specified section of an initialization file. As it copies the data, the function calculates a checksum and appends it to the end of the data. |