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GetProfileInt info  Overview  Group

The GetProfileInt function retrieves an integer from the specified key name in the given section of the WIN.INI file. This function is provided for compatibility with 16-bit Windows-based applications. Win32-based applications should store initialization information in the registry.

UINT GetProfileInt(

    LPCTSTR lpAppName,

// address of section name

    LPCTSTR lpKeyName,

// address of key name

    INT nDefault 

// default value if key name is not found

   );

Parameters

lpAppName
Points to a null-terminated string that specifies the section containing the key name.
lpKeyName
Points to the null-terminated string containing the key name whose value is to be retrieved. This value is in the form of a string; the GetProfileInt function converts the string into an integer and returns the integer.
nDefault
Specifies the default value to return if the key name cannot be found in the initialization file.

Return Values

The return value is the integer equivalent of the string following the key name in WIN.INI. If the function cannot find the key, the return value is the default value. If the value of the key is less than zero, the return value is zero.

Remarks

If the key name consists of digits followed by characters that are not numeric, the function returns only the value of the digits. For example, the function returns 102 for the following line: KeyName=102abc.

Windows NT:
Calls to profile functions may be mapped to the registry instead of to the initialization files. This mapping occurs when the initialization file and section are specified in the registry under the following keys:

HKEY_LOCAL_MACHINE\Software\Microsoft\
        Windows NT\CurrentVersion\IniFileMapping

When the operation has been mapped, the GetProfileInt function retrieves information from the registry, not from the initialization file; the change in the storage location has no effect on the function’s behavior.

The Win32 Profile functions (Get/WriteProfile*, Get/WritePrivateProfile*) use the following steps to locate initialization information:

  1. Look in the registry for the name of the initialization file, say myfile.ini, under IniFileMapping:

    HKEY_LOCAL_MACHINE\Software\Microsoft\
            Windows NT\CurrentVersion\IniFileMapping\myfile.ini

  2. Look for the section name specified by lpAppName. This will be a named value under myfile.ini, or a subkey of myfile.ini, or will not exist.

  3. If the section name specified by lpAppName is a named value under myfile.ini, then that value specifies where in the registry you will find the keys for the section.

  4. If the section name specified by lpAppName is a subkey of myfile.ini, then named values under that subkey specify where in the registry you will find the keys for the section. If the key you are looking for does not exist as a named value, then there will be an unnamed value (shown as "<No Name>") that specifies the default location in the registry where you will find the key.

  5. If the section name specified by lpAppName does not exist as a named value or as a subkey under myfile.ini, then there will be an unnamed value (shown as "<No Name>") under myfile.ini that specifies the default location in the registry where you will find the keys for the section.

  6. If there is no subkey for myfile.ini, or if there is no entry for the section name, then look for the actual myfile.ini on the disk and read its contents.

    When looking at values in the registry that specify other registry locations, there are several prefixes that change the behavior of the ini file mapping:

    ! - this character forces all writes to go both to the registry and to the .INI file on disk.

    # - this character causes the registry value to be set to the value in the Windows 3.1 .INI file when a new user logs in for the first time after setup.

    @ - this character prevents any reads from going to the .INI file on disk if the requested data is not found in the registry.

    USR: - this prefix stands for HKEY_CURRENT_USER, and the text after the prefix is relative to that key.

    SYS: - this prefix stands for HKEY_LOCAL_MACHINE\SOFTWARE, and the text after the prefix is relative to that key.

See Also

GetPrivateProfileInt, WriteProfileString