Richedit2 with multilevel Undo/Redo, etc.

[Borje Hagsten]

Are you bored with the plain old Richedit control yet?

Just tested some code to load Richedit 2 and I thought I'd share
it here. Richedit 2 is a later version and the file is called
Riched20.dll. If you have an older version of Windows 95, it may
not be present, so if you want to use it, you'd better make sure
it is available at all (like if LoadLibrary("Riched20.DLL") fails,
use LoadLibrary("Riched32.DLL") instead, etc..)

RE2 has support for multilevel Undo/Redo, Transparency support,
password style through EM_SETPASSWORDCHAR, etc.


To create it, use the following (DDT code example):

  %ID_RICHEDIT2 = 500  'whatever..
 ----------------------------------------
  LOCAL hRichEd AS LONG
  hRichEd = LoadLibrary("Riched20.DLL")
 
  CALL InitCommonControls
 
  'Use RichEdit20W if you want unicode support..
  CONTROL ADD "RichEdit20A", hDlg, %ID_RICHEDIT, "", 6, 6, 126, 110, _
              %WS_CHILD OR %WS_VISIBLE OR %ES_MULTILINE OR %WS_VSCROLL OR _
              %WS_HSCROLL OR %ES_AUTOVSCROLL OR %ES_WANTRETURN OR  _
              %ES_NOHIDESEL, %WS_EX_CLIENTEDGE CALL DlgCallback

To test the multilevel Undo/Redo, type some text into it, move some
selected text around with the mouse and use Ctrl+V to paste something
into it. Then use Ctrl+Z repeated times to undo, or Ctrl+Y to redo..

To learn more about it, go to http://search.microsoft.com/us/dev/
and search for "Riched20" or "Richedit 2", something like that..


[This message has been edited by Borje Hagsten (edited April 26, 2000).]

[Guest]

I have been playing around with Richedit 3 for the past couple of weeks, Borje. Microsoft did not change the file name so you have to check the version number to see if you have version 2 or 3. The class name is the same "RICHEDIT20A", it will just automatically use version 3 if you have it. Another nice feature they added to it that I like is support for %EM_SETMARGINS, but it will only work if you have version 3, and there is a zoom in\out feature which is pretty cool and you get a slanted cursor over text that is italicized. Steve Hutchesson sent me a updated richedit.h file(that's why I was asking for it in the forum) from Jan 2000 so I could update my include file with all the new constants and types. Microsoft says version 3 comes with Windows 2000, but I have version 3 and I use Windows 98 SE. I got some extra info about version 3 from www.codeguru.com/ I also have been checking at msdn for info on version 3. It is becoming a very versitile control to use. I am still playing around with all the cool effects. So Check it out.

Adam

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[This message has been edited by Adam Ritchie (edited April 26, 2000).]

[Borje Hagsten]

Thanks for the tip. The question is if MS allows you to distribute
Riched20.dll at all, regardless of what version it is. The problem
is that many still uses Win95, so one would need to include it in
a final installation, to avoid too many support calls.. :-/

It's fun to play around with though..


------------------

[Steve Hutchesson]

Borje,

I run win95b and it takes all of the late Microsoft updates which
has left RICHED20.DLL in my system directory so if you can pick
which upgrade has it, it solves the problem of version distribution.

I opened it in a resource editor and it says Product Version : 3.0

I have a sneaking suspicion that it is in the later common control
update from Microsoft, version 5.

Regards,

[email protected]

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[Guest]

Steve brings up a point I forgot to mention, I too downloaded all those win98 SE updates off of Microsoft's windows update site and did not buy the boxed win98 SE, so I too would suspect that is also where the new version came from. It is possible it came from a different program I installed, but it probably came from the boys in Redmond.

Adam


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[Fred Oxenby]

Windows 95
Windows 95 includes only Rich Edit 1.0. However, Riched20.dll is
compatible with Windows 95 and may be installed if an
application that uses Rich Edit 2.0 has been installed.
Windows NT/Windows 2000
Microsoft® Windows NT® version 4.0 includes Rich Edit 1.0 and
2.0. Microsoft Windows® 2000 includes Rich Edit 3.0 with a Rich
Edit 1.0 emulator.
Windows 98
Windows 98 includes Rich Edit 1.0 and 2.0.
..
To create a rich edit control, call the CreateWindowEx function,
specifying the rich edit window class. If you are using Rich
Edit 1.0 (Riched32.dll), specify RichEdit for the window class
parameter. If you are using Rich Edit 2.0 or later
(Riched20.dll), specify RICHEDIT_CLASS for the window class
parameter.
Rich edit controls support most of the window styles used with edit controls as well as additional styles

------------------
Fred
mailto:[email protected][email protected]</A>
http://www.oxenby.se



[This message has been edited by Fred Oxenby (edited April 27, 2000).]

[Borje Hagsten]

> compatible with Windows 95 and may be installed if an
> application that uses Rich Edit 2.0 has been installed.

Yes, I saw that one too and in another place at MSDN they say that
we are not allowed to distribute the latest common controls, but
instead we can include the complete IE 5 upgrade or redirect users
to MS website, where they can download the latest upgrades themselves.

Microsoft logic..


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[Fred Oxenby]

For me, as a licensed visual studio user, this means that
I create a minimal testprogram in VC/VB that includes the
latest control, and install/register that at the customer site.
After that, you can use the control in PB,,,


------------------
Fred
mailto:[email protected][email protected]</A>
http://www.oxenby.se