platform
Class WindowsRegistry

java.lang.Object
  platform.WindowsRegistry

public class WindowsRegistry
extends java.lang.Object

Simple wrapper class to access the windows registy. The trick is to access a hidden java class inside the JDK which is available at JDK 1.4

Author:

Christian Banse

Field Summary

private static int	ERROR_CODE
private static java.lang.reflect.Method	ms_closeKeyMethod
private static java.lang.reflect.Method	ms_openKeyMethod
private static java.lang.reflect.Method	ms_queryValueMethod
private static java.lang.Class	ms_windowsPreferencesClass
private static int	NATIVE_HANDLE

Constructor Summary

WindowsRegistry()

Method Summary

static int	closeKey(int a_hKey) Closes the handle to an opened key.
static int	openKey(int a_hKey, java.lang.String a_subKey, int a_securityMask) Opens a registry key for further processing.
static java.lang.String	queryValue(int a_hKey, java.lang.String a_valueName) Queries a certain value of an opened registry key.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NATIVE_HANDLE

private static final int NATIVE_HANDLE

See Also:

Constant Field Values

ERROR_CODE

private static final int ERROR_CODE

See Also:

Constant Field Values

ms_windowsPreferencesClass

private static java.lang.Class ms_windowsPreferencesClass

ms_openKeyMethod

private static java.lang.reflect.Method ms_openKeyMethod

ms_queryValueMethod

private static java.lang.reflect.Method ms_queryValueMethod

ms_closeKeyMethod

private static java.lang.reflect.Method ms_closeKeyMethod

Constructor Detail

WindowsRegistry

public WindowsRegistry()

Method Detail

openKey

public static int openKey(int a_hKey,
                          java.lang.String a_subKey,
                          int a_securityMask)

Opens a registry key for further processing.

Parameters:

a_hKey - The key to open (for example WindowsOS.HKEY_CLASSES_ROOT.

a_subKey - The sub key.

a_securityMask - The security mask (for example WindowsOS.KEY_ALL_ACCESS.

Returns:

the native handle to the registry key.

queryValue

public static java.lang.String queryValue(int a_hKey,
                                          java.lang.String a_valueName)

Queries a certain value of an opened registry key. This only works if the value is REG_SZ

Parameters:

a_hKey - The native handle to the key.

a_valueName - The value name.

Returns:

the value of the specified value name.

closeKey

public static int closeKey(int a_hKey)

Closes the handle to an opened key.

Parameters:

a_hKey - The native handle of the key.

Returns:

a windows error code. Returns WindowsOS.ERROR_SUCCESS on success.