I would second upgrading to XE2/XE3 as almost all of the Unicode housekeeping
is done automatically in later versions of Delphi – and if you start coding for
AnsiChar/WideChar etc then you will have considerable code to unwind when you
do convert as the workarounds are not needed
John Bird
From: Stefan Mueller
Sent: Tuesday, October 02, 2012 11:57 PM
To: 'NZ Borland Developers Group - Delphi List'
Subject: Re: [DUG] Unicode help in D7
The problem with storing Unicode in utf8 is that the caller always needs to
know whether a string contains ansi or utf8 and that can get messy/buggy real
quick if you have a big project
I am sure you have thought about it and you have your own reason. But as far as
I am concerned, if you go down that road to slowly Unicode enable your
application (including later on maybe Form captions, labels, edits, listboxes,
etc) then using widestring and something like TNT library on delphi7 is the
easiest way (or upgrade to >delphi2009)
Kind Regards,
Stefan Mueller
_______________________
R&D Manager
ORCL Toolbox LLP, Japan
http://www.orcl-toolbox.com
From: [email protected]
[mailto:[email protected]] On Behalf Of Ross Levis
Sent: Tuesday, October 02, 2012 7:25 PM
To: 'NZ Borland Developers Group - Delphi List'
Subject: Re: [DUG] Unicode help in D7
I’ve hit a snag.
D7 defines IShellLinkW like this.
IShellLinkW = interface(IUnknown) { sl }
[SID_IShellLinkW]
function GetPath(pszFile: PWideChar; cchMaxPath: Integer;
var pfd: TWin32FindData; fFlags: DWORD): HResult; stdcall;
I think the TWin32FindData should be TWin32FindDataW. I take it this is a bug,
and I’ll define my own one.
Ross.
From: [email protected]
[mailto:[email protected]] On Behalf Of Ross Levis
Sent: Tuesday, 2 October 2012 10:58 p.m.
To: 'NZ Borland Developers Group - Delphi List'
Subject: Re: [DUG] Unicode help in D7
Thanks for that. I did download some free 3rd party components and pas files I
found which include a TOpenDialogW, WideFindFirst, WideFileExists, etc. They
should be all I need.
I’ll actually be storing everything in UTF8 and converting backwards and
forwards to full unicode as required for the Windows API. That way I can keep
most of my code using the default AnsiString, standard TStringLists, etc.
For me it would be useful if someone had created a set of UTF8 components. I
find it so much easier to work with. I’ve created a UTF8FileExists function,
for example. I suppose later Delphi versions to the conversions automatically.
Cheers,
Ross.
From: [email protected]
[mailto:[email protected]] On Behalf Of Stefan Mueller
Sent: Tuesday, 2 October 2012 9:22 p.m.
To: 'NZ Borland Developers Group - Delphi List'
Subject: Re: [DUG] Unicode help in D7
The buffer has to be WideChar if you use the IShellLinkW interface.
I also had my software unicodified with delphi7. I used the TNT components
(last free version is here: http://www.axolot.com/TNT/ - it got bought out by
TMS software: http://www.tmssoftware.com/site/tmsuni.asp ) and that made things
very easy.
The TNT component pack adds Unicode enabled VCL-controls as well as Unicode
Windows-API support for many functions(FileOpen,FileCreate,etc) and
classes(WideStringList, etc). The library makes it easy to be dealing with
Unicode.
Kind Regards,
Stefan Mueller
_______________________
R&D Manager
ORCL Toolbox LLP, Japan
http://www.orcl-toolbox.com
From: [email protected]
[mailto:[email protected]] On Behalf Of Ross Levis
Sent: Tuesday, October 02, 2012 5:00 PM
To: 'NZ Borland Developers Group - Delphi List'
Subject: [DUG] Unicode help in D7
I’m adding a small amount of Unicode support in my D7 app to enable opening
files where the filenames are in foreign languages. Currently my app can’t
even open these files. I’ve installed an OpenFile dialog which provides
WideString results.
One thing I need is to resolve shortcuts. I have converted the following
function which I had for ANSI filenames into Unicode. Just IShellLinkW and
TWin32FindDataW changed.
function ResolveShortcut(const LinkPath: WideString): WideString;
var
ShellLink: IShellLinkW
FindData: TWin32FindDataW;
buff: Array [0..Max_Path-1] of Char;
begin
ShellLink := CreateComObject(CLSID_ShellLink) as IShellLinkW;
PersistFile := ShellLink as IPersistFile;
if (PersistFile.Load(PWideChar(LinkPath),STGM_READ) = S_OK) and
(ShellLink.Resolve(Application.Handle, SLR_NO_UI) = NOERROR) and
(ShellLink.GetPath(buff,MAX_PATH,FindData,SLGP_UNCPRIORITY)= NOERROR) then
Result := buff
else Result := ''
end;
But I’m not sure if the buff array should be of WideChar or left as Char.
Does MAX_PATH assume wide characters?
Thanks,
Ross.
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