Library: Util
Package: Windows
Header: Poco/Util/WinRegistryKey.h
Description
This class implements a convenient interface to the Windows Registry.
This class is only available on Windows platforms.
Member Summary
Member Functions: close, deleteKey, deleteValue, exists, getBinary, getInt, getInt64, getString, getStringExpand, handle, handleFor, handleSetError, isReadOnly, key, open, setBinary, setInt, setInt64, setString, setStringExpand, subKeys, type, values
Types Aliases
Keys
using Keys = std::vector < std::string >;
Values
using Values = std::vector < std::string >;
Enumerations
Type
REGT_NONE = 0
REGT_STRING = 1
REGT_BINARY = 3
REGT_DWORD = 4
REGT_LINK = 6
REGT_FULL_RESOURCE_DESCRIPTOR = 9
REGT_RESOURCE_REQUIREMENTS_LIST = 10
REGT_QWORD = 11
Constructors
WinRegistryKey
WinRegistryKey(
const std::string & key,
bool readOnly = false,
REGSAM extraSam = 0
);
Creates the WinRegistryKey.
The key must start with one of the root key names like HKEY_CLASSES_ROOT, e.g. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services.
If readOnly is true, then only read access to the registry is available and any attempt to write to the registry will result in an exception.
extraSam is used to pass extra flags (in addition to KEY_READ and KEY_WRITE) to the samDesired argument of RegOpenKeyEx() or RegCreateKeyEx().
WinRegistryKey
WinRegistryKey(
HKEY hRootKey,
const std::string & subKey,
bool readOnly = false,
REGSAM extraSam = 0
);
Creates the WinRegistryKey.
If readOnly is true, then only read access to the registry is available and any attempt to write to the registry will result in an exception.
extraSam is used to pass extra flags (in addition to KEY_READ and KEY_WRITE) to the samDesired argument of RegOpenKeyEx() or RegCreateKeyEx().
Destructor
~WinRegistryKey
~WinRegistryKey();
Destroys the WinRegistryKey.
Member Functions
deleteKey
void deleteKey();
Recursively deletes the key and all subkeys.
deleteValue
void deleteValue(
const std::string & name
);
Deletes the value with the given name.
Throws a NotFoundException if the value does not exist.
exists
bool exists();
Returns true iff the key exists.
exists
bool exists(
const std::string & name
);
Returns true iff the given value exists under that key.
getBinary
std::vector < char > getBinary(
const std::string & name
);
Returns the string value (REG_BINARY) with the given name. An empty name denotes the default value.
Throws a NotFoundException if the value does not exist.
getInt
int getInt(
const std::string & name
);
Returns the numeric value (REG_DWORD) with the given name. An empty name denotes the default value.
Throws a NotFoundException if the value does not exist.
getInt64
Poco::Int64 getInt64(
const std::string & name
);
Returns the numeric value (REG_QWORD) with the given name. An empty name denotes the default value.
Throws a NotFoundException if the value does not exist.
getString
std::string getString(
const std::string & name
);
Returns the string value (REG_SZ) with the given name. An empty name denotes the default value.
Throws a NotFoundException if the value does not exist.
getStringExpand
std::string getStringExpand(
const std::string & name
);
Returns the string value (REG_EXPAND_SZ) with the given name. An empty name denotes the default value. All references to environment variables (%VAR%) in the string are expanded.
Throws a NotFoundException if the value does not exist.
isReadOnly 
bool isReadOnly() const;
Returns true iff the key has been opened for read-only access only.
setBinary
void setBinary(
const std::string & name,
const std::vector < char > & value
);
Sets the string value (REG_BINARY) with the given name. An empty name denotes the default value.
setInt
void setInt(
const std::string & name,
int value
);
Sets the numeric (REG_DWORD) value with the given name. An empty name denotes the default value.
setInt64
void setInt64(
const std::string & name,
Poco::Int64 value
);
Sets the numeric (REG_QWORD) value with the given name. An empty name denotes the default value.
setString
void setString(
const std::string & name,
const std::string & value
);
Sets the string value (REG_SZ) with the given name. An empty name denotes the default value.
setStringExpand
void setStringExpand(
const std::string & name,
const std::string & value
);
Sets the expandable string value (REG_EXPAND_SZ) with the given name. An empty name denotes the default value.
subKeys
void subKeys(
Keys & keys
);
Appends all subKey names to keys.
type
Type type(
const std::string & name
);
Returns the type of the key value.
values
void values(
Values & vals
);
Appends all value names to vals;
close 
void close();
handle
HKEY handle();
handleFor 
static HKEY handleFor(
const std::string & rootKey
);
handleSetError
void handleSetError(
const std::string & name
);
key
std::string key() const;
key
std::string key(
const std::string & valueName
) const;
open
void open();