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{*****************************************************************************}
{ }
{ Tnt Delphi Unicode Controls }
{ http://www.tntware.com/delphicontrols/unicode/ }
{ Version: 2.3.0 }
{ }
{ Copyright (c) 2002-2007, Troy Wolbrink (troy.wolbrink@tntware.com) }
{ }
{*****************************************************************************}
unit TntRegistry;
{$INCLUDE TntCompilers.inc}
interface
uses
Registry, Windows, TntClasses;
{TNT-WARN TRegistry}
type
TTntRegistry = class(TRegistry{TNT-ALLOW TRegistry})
private
procedure WriteStringEx(dwType: DWORD; const Name, Value: WideString);
public
procedure GetKeyNames(Strings: TTntStrings);
procedure GetValueNames(Strings: TTntStrings);
function ReadString(const Name: WideString): WideString;
procedure WriteString(const Name, Value: WideString);
procedure WriteExpandString(const Name, Value: WideString);
end;
implementation
uses
RTLConsts, SysUtils, TntSysUtils;
{ TTntRegistry }
procedure TTntRegistry.GetKeyNames(Strings: TTntStrings);
var
Len: DWORD;
I: Integer;
Info: TRegKeyInfo;
S: WideString;
begin
if (not Win32PlatformIsUnicode) then
inherited GetKeyNames(Strings.AnsiStrings)
else begin
Strings.Clear;
if GetKeyInfo(Info) then
begin
SetLength(S, (Info.MaxSubKeyLen + 1) * 2);
for I := 0 to Info.NumSubKeys - 1 do
begin
Len := (Info.MaxSubKeyLen + 1) * 2;
if RegEnumKeyExW(CurrentKey, I, PWideChar(S), Len, nil, nil, nil, nil) = ERROR_SUCCESS then
Strings.Add(PWideChar(S));
end;
end;
end;
end;
{$IFNDEF COMPILER_9_UP} // fix declaration for RegEnumValueW (lpValueName is a PWideChar)
function RegEnumValueW(hKey: HKEY; dwIndex: DWORD; lpValueName: PWideChar;
var lpcbValueName: DWORD; lpReserved: Pointer; lpType: PDWORD;
lpData: PByte; lpcbData: PDWORD): Longint; stdcall; external advapi32 name 'RegEnumValueW';
{$ENDIF}
procedure TTntRegistry.GetValueNames(Strings: TTntStrings);
var
Len: DWORD;
I: Integer;
Info: TRegKeyInfo;
S: WideString;
begin
if (not Win32PlatformIsUnicode) then
inherited GetValueNames(Strings.AnsiStrings)
else begin
Strings.Clear;
if GetKeyInfo(Info) then
begin
SetLength(S, Info.MaxValueLen + 1);
for I := 0 to Info.NumValues - 1 do
begin
Len := Info.MaxValueLen + 1;
RegEnumValueW(CurrentKey, I, PWideChar(S), Len, nil, nil, nil, nil);
Strings.Add(PWideChar(S));
end;
end;
end;
end;
function TTntRegistry.ReadString(const Name: WideString): WideString;
var
DataType: Cardinal;
BufSize: Cardinal;
begin
if (not Win32PlatformIsUnicode) then
result := inherited ReadString(Name)
else begin
// get length and type
DataType := REG_NONE;
if RegQueryValueExW(CurrentKey, PWideChar(Name), nil,
@DataType, nil, @BufSize) <> ERROR_SUCCESS then
Result := ''
else begin
// check type
if not (DataType in [REG_SZ, REG_EXPAND_SZ]) then
raise ERegistryException.CreateFmt(SInvalidRegType, [Name]);
if BufSize = 1 then
BufSize := SizeOf(WideChar); // sometimes this occurs for single character values!
SetLength(Result, BufSize div SizeOf(WideChar));
if RegQueryValueExW(CurrentKey, PWideChar(Name), nil,
@DataType, PByte(PWideChar(Result)), @BufSize) <> ERROR_SUCCESS then
raise ERegistryException.CreateFmt(SRegGetDataFailed, [Name]);
Result := PWideChar(Result);
end
end
end;
procedure TTntRegistry.WriteStringEx(dwType: DWORD; const Name, Value: WideString);
begin
Assert(dwType in [REG_SZ, REG_EXPAND_SZ]);
if (not Win32PlatformIsUnicode) then begin
if dwType = REG_SZ then
inherited WriteString(Name, Value)
else
inherited WriteExpandString(Name, Value);
end else begin
if RegSetValueExW(CurrentKey, PWideChar(Name), 0, dwType,
PWideChar(Value), (Length(Value) + 1) * SizeOf(WideChar)) <> ERROR_SUCCESS then
raise ERegistryException.CreateFmt(SRegSetDataFailed, [Name]);
end;
end;
procedure TTntRegistry.WriteString(const Name, Value: WideString);
begin
WriteStringEx(REG_SZ, Name, Value);
end;
procedure TTntRegistry.WriteExpandString(const Name, Value: WideString);
begin
WriteStringEx(REG_EXPAND_SZ, Name, Value);
end;
end.
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