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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| kernel32.lib
| Header File
| winbase.h
| Unicode
| WinNT
| Platform Notes
| None
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WriteProfileSection
The WriteProfileSection function replaces the contents of the specified section in the WIN.INI file
with the specified keys and values.
This function is provided for compatibility with 16-bit Windows applications.
Win32-based applications should store initialization information in the
registry.
BOOL WriteProfileSection(
LPCTSTR lpAppName,
| // pointer to section name
| LPCTSTR lpString
| // pointer to buffer with data
| );
|
|
Parameters
lpAppName
Points to a null-terminated string containing the name of the section in which
data is written. This section name is typically the name of the calling
application.
lpString
Points to a buffer containing the new key names and associated values that are
written to the named section.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error
information, call GetLastError.
Remarks
Windows 95:
If there is no section in WIN.INI that matches the specified section name, WriteProfileSection creates the section at the end of the file and initializes the new section
with the key name and value pairs specified in the lpString parameter.
Keys and values in the lpString buffer consist of one or more null-terminated strings, followed by a final
null character. Each string has the following form:
key=string
The WriteProfileSection function is not case-sensitive; the strings can be a combination of uppercase
and lowercase letters.
WriteProfileSection deletes the existing keys and values for the named section and inserts the
key names and values in the buffer pointed to by lpString. The function does not attempt to correlate old and new key names; if the new
names appear in a different order from the old names, any comments associated
with preexisting keys and values in the initialization file will probably be
associated with incorrect keys and values.
This operation is atomic; no other operations that read from or write to the
initialization file are allowed while the information is being written.
Windows NT:
Windows NT maps most .INI file references to the registry, using the mapping
defined under the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows NT\CurrentVersion\IniFileMapping
When the operation has been mapped, the WriteProfileSection function writes information to the registry, not to 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:
- 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
- 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.
- 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.
- 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.
- 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.
- 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
GetProfileSection, WritePrivateProfileSection
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