-- --
-- S p e c --
-- --
--- --
--- Copyright (C) 2001 Free Software Foundation, Inc. --
+-- Copyright (C) 2001-2005, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
--- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
HKEY_PERFORMANCE_DATA : constant HKEY;
type Key_Mode is (Read_Only, Read_Write);
- -- Access mode for the registry key.
+ -- Access mode for the registry key
Registry_Error : exception;
-- Registry_Error is raises by all routines below if a problem occurs
function Create_Key
(From_Key : HKEY;
Sub_Key : String;
- Mode : Key_Mode := Read_Write)
- return HKEY;
+ Mode : Key_Mode := Read_Write) return HKEY;
-- Open or create a key (named Sub_Key) in the Windows registry database.
-- The key will be created under key From_Key. It returns the key handle.
-- From_Key must be a valid handle to an already opened key or one of
function Open_Key
(From_Key : HKEY;
Sub_Key : String;
- Mode : Key_Mode := Read_Only)
- return HKEY;
+ Mode : Key_Mode := Read_Only) return HKEY;
-- Return a registry key handle for key named Sub_Key opened under key
-- From_Key. It is possible to open a key at any level in the registry
-- tree in a single call to Open_Key.
procedure Close_Key (Key : HKEY);
- -- Close registry key handle. All resources used by Key are released.
+ -- Close registry key handle. All resources used by Key are released
function Key_Exists (From_Key : HKEY; Sub_Key : String) return Boolean;
- -- Returns True if Sub_Key is defined under From_Key in the registry.
+ -- Returns True if Sub_Key is defined under From_Key in the registry
- function Query_Value (From_Key : HKEY; Sub_Key : String) return String;
+ function Query_Value
+ (From_Key : HKEY;
+ Sub_Key : String;
+ Expand : Boolean := False) return String;
-- Returns the registry key's value associated with Sub_Key in From_Key
- -- registry key.
+ -- registry key. If Expand is set to True and the Sub_Key is a
+ -- REG_EXPAND_SZ the returned value will have the %name% variables
+ -- replaced by the corresponding environment variable value.
procedure Set_Value (From_Key : HKEY; Sub_Key : String; Value : String);
- -- Add the pair (Sub_Key, Value) into From_Key registry key.
+ -- Add the pair (Sub_Key, Value) into From_Key registry key
procedure Delete_Key (From_Key : HKEY; Sub_Key : String);
- -- Remove Sub_Key from the registry key From_Key.
+ -- Remove Sub_Key from the registry key From_Key
procedure Delete_Value (From_Key : HKEY; Sub_Key : String);
- -- Remove the named value Sub_Key from the registry key From_Key.
+ -- Remove the named value Sub_Key from the registry key From_Key
generic
with procedure Action
Sub_Key : String;
Value : String;
Quit : in out Boolean);
- procedure For_Every_Key_Value (From_Key : HKEY);
+ procedure For_Every_Key_Value (From_Key : HKEY; Expand : Boolean := False);
-- Iterates over all the pairs (Sub_Key, Value) registered under
-- From_Key. Index will be set to 1 for the first key and will be
-- incremented by one in each iteration. Quit can be set to True to
-- stop iteration; its initial value is False.
--
- -- Key value that are not of type string are skipped. In this case, the
- -- iterator behaves exactly as if the key was not present. Note that you
- -- must use the Win32.Winreg API to deal with this case.
+ -- Key value that are not of type string (i.e. not REG_SZ / REG_EXPAND_SZ)
+ -- are skipped. In this case, the iterator behaves exactly as if the key
+ -- were not present. Note that you must use the Win32.Winreg API to deal
+ -- with this case. Furthermore, if Expand is set to True and the Sub_Key
+ -- is a REG_EXPAND_SZ the returned value will have the %name% variables
+ -- replaced by the corresponding environment variable value.
private
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