Delphi 6 и Delphi 7 сильно друг от друга отличаются?

unit CPFix;
interface
 
{$IFNDEF VER150}
{$IF Trunc(RTLVersion) <> 15}
{$MESSAGE ERROR 'This unit for Delphi 7 only.'}
{$IFEND}
{$ENDIF}
 
function FixDefaultUserCodePage:Boolean;
 
implementation
uses
    Windows;
 
function FixDefaultUserCodePage:Boolean;
type
    TCode=packed record
        CallOpA:Byte;//$E8
        OffsetA:Integer;//GetThreadLocale
        CallOpB:Byte;//$E8
        OffsetB:Integer;//LCIDToCodePage
        MovOp:Byte;//$A3
        VarAddr:PInteger;//DefaultUserCodePage
    end;
    TCodes=packed record
        Code1:TCode;//NT4
        JMP:Word;//Short jump
        Code2:TCode;//Win95/98/ME
    end;
    PImportStub=^TImportStub;
    TImportStub=packed record
        JMP:Word;//$25ff
        Addr:PPointer;//Real addr
    end;
var
    Code:^TCodes;
    Count:Integer;
    MemInfo:TMemoryBasicInformation;
    P:Pointer;
begin
    Result:=False;
    P:=@TObject.Free;
    if PImportStub(P).JMP=$25FF then P:=PImportStub(P).Addr^;
    if (VirtualQuery(P,MemInfo,SizeOf(MemInfo))<SizeOf(MemInfo))
        or(MemInfo.State<>MEM_COMMIT) then Exit;
    Code:=MemInfo.BaseAddress;
    Count:=MemInfo.RegionSize;
    while Count>SizeOf(TCodes) do begin
        with Code^ do begin
            if (Code1.CallOpA=$E8)and(Code1.CallOpB=$E8)and(Code1.MovOp=$A3)
                and(Code2.CallOpA=$E8)and(Code2.CallOpB=$E8)and(Code2.MovOp=$A3)
                and(Code1.OffsetA-Code1.OffsetB=Code2.OffsetA-Code2.OffsetB)
                and(Code1.VarAddr=Code2.VarAddr) then begin
                    Code1.VarAddr^:=GetACP;
                    Result:=True;
                    Break;
            end;
            Inc(PByte(Code));
            Dec(Count);
        end;
    end;
end;
 
initialization
    FixDefaultUserCodePage;
end.

package CodePageFix;
 
{$R *.res}
{$ALIGN 8}
{$ASSERTIONS OFF}
{$BOOLEVAL OFF}
{$DEBUGINFO OFF}
{$EXTENDEDSYNTAX ON}
{$IMPORTEDDATA ON}
{$IOCHECKS OFF}
{$LOCALSYMBOLS OFF}
{$LONGSTRINGS ON}
{$OPENSTRINGS ON}
{$OPTIMIZATION ON}
{$OVERFLOWCHECKS OFF}
{$RANGECHECKS OFF}
{$REFERENCEINFO OFF}
{$SAFEDIVIDE OFF}
{$STACKFRAMES OFF}
{$TYPEDADDRESS OFF}
{$VARSTRINGCHECKS ON}
{$WRITEABLECONST ON}
{$MINENUMSIZE 1}
{$IMAGEBASE $400000}
{$DESCRIPTION 'UserCodePage IDE fixer'}
{$DESIGNONLY}
{$IMPLICITBUILD OFF}
 
requires
    rtl;
 
contains
    CPFix in 'CPFix.pas';
 
end.