I'm having trouble getting nested datasets working for the first time.
Originally I was getting a 'Record changed by another user' message. I
created a simple test ap with a grid and 3 client datasets connected via a
DCOMConnection to my server. A button sets the main cds params and calls
opens
We use this with no problems - I have reinstalled delphi a couple of times
with MPC present on my NT workstation.
Carl Reynolds <[EMAIL PROTECTED]> on 10/05/99 10:18:51
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Try
Application.LogMessage(...);
In a service app, application is TServiceApplication and it support event
logging - mostly.
"Tony Goodrich" <[EMAIL PROTECTED]> on 10/05/99 07:46:16
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Huh, I get access denied tryin to upload so I'll mail them to you direct.
Jeremy Coulter <[EMAIL PROTECTED]> on 07/05/99 15:15:30
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Technolo
Not without installing it again. I'll upload it to ftp.delphi.org. There
are 2 zips, svcom.zip & svcom_tutorial.zip.
Jeremy Coulter <[EMAIL PROTECTED]> on 07/05/99 15:15:30
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Yes, but only with D4 CS and only with problems.
There is a set of good components available from ... can't remember, but I
have them if you want them. Called svcom. They work in D3 too I think and
you can create COM server sevice, plus it allows debugging and some other
goodies. Works very
Well I started getting AV's in strang places on a working app so I debugged
it and found this to be the problem. Maybe the AV's were caused by
something else and debugging misled me to this. Either way, the original
casue of the Exception has been cured so it's gone away - for now...
"De
It can happen in debug or in runtime.
[EMAIL PROTECTED] (Rohit Gupta) on 07/05/99 22:15:52
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Subject: Re
Cached updates us db files to hold the itermediate values. The lock files
are for the user - not the server so you don't have to worry - execpt for
the normal worries with db files.
If you are using D4 then Client Data sets is a better option and you don't
need to pay a license for Midas. Do
Under NT if I bring up the clock and click Ok to change the date or time,
the clock wont dissappear - it hangs - until I close our Delphi 3 apps. I
can also kill the clock by closing RUNDLL.EXE via the task manager.
Has anyone else seen this?
--
Are you using cached updates?
"Tony Goodrich" <[EMAIL PROTECTED]> on 04/05/99 16:59:39
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Subject: [DUG]
Server dosn't have the same limitation.
Myles Penlington <[EMAIL PROTECTED]> on 05/05/99 09:26:54
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Subj
Doing the following :
Except
On E : Exception Do
Sometimes gives me an empty (nil) E enen though I have explicityly created
an exception using raise Exception.Create.
Has anyone else had this?
---
New Zeal
You don't happen to be using NT Workstation for your server do you? 10
Connections is the magic number for Workstation.
Myles Penlington <[EMAIL PROTECTED]> on 04/05/99 14:58:32
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Don't know if pcAnywhere has an API you can hook into but we do it with a
DOS based coms system using db files and in-house applications. With any
replication scheme you need some mechanism to deal with conflicts. You
could use Midas and Client datasets. You could roll your own scheme - as
we
tmBoth means apartment and free.
The March 99 issue of Dlephi informat has a good article on creating ASP
components. Since you are using IIS4 then you may find it better/easier to
create an MTS components - this will give you db connection pooling.
Myles Penlington <[EMAIL PROTECTED]> o
AS/400 Windows? What's a Window? Strictly text based. Very reliable but
very old technology. You can install an NT or Novell server inside of the
AS/400 and share resources such as disk & printer etc, Even manage the
servers from the 400. But the OS is a real mans OS, not some Microsoft
toy
#1 - You don't need DB2. If you've got DB2 then you don't need D400 for
data access to it - SQL Links will do that. You do get native access to
files or you can use the IDCO400 driver and use the BDE - which is what I
do cause the native stuff doesn't use TDataset's so you can't use dataaware
Oh sorry, read half the thread...
"Patrick Dunford" <[EMAIL PROTECTED]> on 29/04/99 17:02:35
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Subject: R
We just did this - about 10 minutes ago - and if you Import ActiveX Control
from the component menu you will get a viaible control you can drop on your
form.
"Patrick Dunford" <[EMAIL PROTECTED]> on 29/04/99 16:18:28
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We use it. What do you wanna know?
"Patrick Dunford" <[EMAIL PROTECTED]> on 29/04/99 16:33:00
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Subject:
We have a report where we wish to have every field framed so that it looks
like a grid. When the frame property is set to to [top, bottom, left,
right] the frame does not resize when autostretch is set . Therefore we
end up with a multiline field with a frame after the first line.
Anyone got
Try
grid.Columns.SaveToFile / LoadFromFile
"Darren Bilby" <[EMAIL PROTECTED]> on 25/04/99 01:28:41
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Checkout the Delphi Super Page - there are a couple of free components for
this.
[EMAIL PROTECTED] on 23/04/99 15:22:33
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Delphi DOES support exceptions with COM/Automation Objects . Simply raise
the excpetion and the client will get it. If you have a default exception
handler in your server then it is most likely being trapped there. The
std. Delphi exception handler will pass it back to the client correctly.
Sorry, cancel that. I figured it out.
[EMAIL PROTECTED] on 22/04/99 17:07:33
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Subject: [DUG]: Implem
I want to have a series of COM objects in DLL's that all implement the same
interface - but in different ways. I can create an interface and a coClass
in the same project but I really want is to create a coClass and implement
an existing interface which is defined in a 'parent' TLB. I know I ca
I love this argument because I can see both sides...
I have always used bound controls in VB and Delphi. With Delphi we use
Midas because it works and it saved many man many hours creating our own
version of something that we felt Borland/Inprise new how to do better than
we did. In the end,
IN is notoriously slow - at least it is on MS SQL and Interbase. Better to
do a join if you can.
Grant Black <[EMAIL PROTECTED]> on 21/04/99 10:49:28
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Don't judge Midas by it's price until you have talked to Inprise. The list
price is rediculous and you can negotiate something better. I would
suggest you talk to Annie.
Yanbo Li <[EMAIL PROTECTED]> on 21/04/99 10:47:51
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Parameters can only be simple types, like string, integer etc. You can't
use a parameter query to do this. Instead, you will need to construct the
query at runtime thus:
qry.SQL.Text := ' select * from table where somefield in (';
for i = 0 to list.count - 1 do
if i = list.
Check the Delphi Super Page - I think I have seen some Oracle VCL.
Yanbo Li <[EMAIL PROTECTED]> on 21/04/99 09:45:10
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It's not possible. You will have to use multiple OR's or a join. Joins
are generally quicker than IN anyway.
Andrew Masters <[EMAIL PROTECTED]> on 20/04/99 18:56:42
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No, the POS system is from a third party and uses dbf's. We use Interbase
in the back office stuff that you can't see from checkout. However, we do
need to interface to POS for price changes etc so we still need the bde for
that part - at least until the POS becomes C/S.
"Jeremy Coulter" <
We use GBak Scheduler which I got from the Dunstan Thomas site
(http://www.interbase.dthomas.co.uk/). It works as a standalone app, task
bar app or NT service. It does all sorts of nifty backups for as many db's
as you like, creates a log, optionally emails the log, zips the back files
etc etc
IB Objects and FIB components rep[lace the BDE for Interbase but you still
need the IB Client.
DCOM is not necessarily Windows only... but if you can find anyone who nows
how to get DCOM for Mac or DCOM or Solaris working then you are doing well.
It's hard enough to get it going on NT!
You cou
If you are using TDatabase then you are using the BDE so the client is very
fat, allmost obese.
Multi-tier is the only true thin solution but depending on your database,
you might want to choose a different db engine, which will provide some
slimming effect. You can do multi-tier without Midas
It would have to be the caller wouldn't it? The callee can't see the
callers stack...
Maurice Butler <[EMAIL PROTECTED]> on 19/04/99 12:31:15
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Another point: I now wish we had never used the BDE but at the time !4
months ago), FIB was not as good and IBO seemed to complex. The main
problem I find with the BDE is that a connection is a database is a
transaction. FIB and IBO seperate the transaction from the connection -
eg, you can h
Well, they are free.. as the name suggests. I also beleive that FIB is the
basis for the VCL that will be included in IB 6. They seems to work and
seem to be speedy. For a more complete review, Peter Hyde is probably the
man as I know he used IBObjects extensively.
Peter...?
You can get FIB
I had a play on the weekend with FIB (Free Interbase) components and
managed some success but when it came time to connect a FIB Dataset to a
provider I get an error 'Invalid Field Type'. I had guessed that this
might be because FIB creates TFIBStringFields rather than normal
TStringFields so I
This is the code I have for filtering an activity log :
FSEventViewer1.GetNavDataSet.Filter :=
'LOGDATE >= ''' + FormatDateTime('dd/mm/', DateTimeBegin.Date) +
''' AND LOGDATE <= ''' + FormatDateTime('dd/mm/', DateTimeEnd.Date)
+ ;
This replies on having the bde date f
You can also try http://www.dejanews.com which I have found to be much more
reliable and accurate.
Kerry Sainsbury <[EMAIL PROTECTED]> on 14/04/99 13:00:40
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I tend not to use the generator from a trigger for this reason. Also if
you have related child records you need to have the key value before you
add them and you can't do this if you don't know the value.
Instead, I call the generator from the client code first and then use it in
the master an
What's the database? It's a server of some sort I'm guessing.
If this is the case then it's probably becuase the server has changed the
data in between the bde writing it and reading it back again after. The
bde does this to ensure that the record made it to the server in one peice.
So, you p
I asked my friend and he said you had to install DCOM 95 first, reboot and
then install the MDAC. Beyond that, he uses the version of Install sheild
that comes with MSVC 6. If you are doing it manually then you need to read
the knowledge base articles.
Cheers
"Chris Crowe" <[EMAIL PROTE
Don't know if I can help but here's a few ideas
Have you tried installing Access before/after? Compare the files it
installs with your versions.
Do a registry compare.
Try using Installsheild to create an install set (not the Dlephi version
- the full one).
Failing that, I have a friend
ActiveX
"Jeremy Coulter" <[EMAIL PROTECTED]> on 09/04/99 13:41:28
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Subject: RE: [DUG]: CreateOLEObject
Try calling CoInitialize(Nil) first and make sure you call CoUninitialize
before exiting. You can also try OLEInitialize and OLEUninitialize.
These are called during application.initialize but (I think) only if the
app is an automation server. Also, if you are doing this in your won
thread, t
Where can 'TV' be got from?
"Max Renshaw-Fox" <[EMAIL PROTECTED]> on 06/04/99 11:44:23
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Subject: RE: [D
You just need to have the correct DLL's installed - usually by installing
the last s.p and IE 3 or 4. Office also has some of it..
Grant Black <[EMAIL PROTECTED]> on 30/03/99 18:27:50
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1 per data module ...?
Edward Huang <[EMAIL PROTECTED]> on 29/03/99 15:53:59
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Subject: Re: [DUG]: Name
Did you check that autosessionname is true? You can still attach the
various dataset to either session.
Edward Huang <[EMAIL PROTECTED]> on 29/03/99 14:40:33
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This is an error that results when you havbe more than one tdatabase
connected in the same session and the database names are not unique. Try
adding a session component to the datamodule(s) and setting auto session
name to true and on the database components set handleshared to true. Then
poin
Can you dupe the problem on a NT workstation to the NT server? I ask this
becasue the 95 TCP/IP can be a tad flakey at times.
BJ Wilson <[EMAIL PROTECTED]> on 24/03/99 11:44:45
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What version of BDE?
BJ Wilson <[EMAIL PROTECTED]> on 23/03/99 11:49:43
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Subject: [DUG]: DB2 Connecti
I posted a message to this group yesturday (regarding Crystal and RB Pro)
that has apparently cause some offence. I think the remark concerned was:
>>All the people here who say that Crystal is slow have obviously not done
any serious C/S work because all crystal does is run a query.
>>If you w
For what it's worth, I have just evaluated (mostly) Seagate Info 7. In the
process I had a look at Report Builder Pro.
Info includes Seagate Report Designer (formelly Crystal Reports) as well as
many other designers. The only comparison that can be made between RB Pro
(or non pro) is in the d
The source and destination must have the same schema so if the two queries
are the same then
insert into table select * from query blah blah
will work fine - maybe (depends on db type, autoinc/identity/timestamp cols
etc.)
If not then you need to
insert into table (field list) sel
Checkout http://www.execpc.com/dmiser~ and book mark it!!!
He has papers, book lists and links for Delphi COM/DCOM programming.
"Paul Lowman" <[EMAIL PROTECTED]> on 12/03/99 10:50:42
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I need a (free prefered with source) data aware tree view component. Does
anyone have one?
---
New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED]
Website: http://www.delphi.org.nz
I must say that my experience has been completely the opposite. I have
found that the level of suppport for Crstal has been the best of any
product I have ever used. I would frequently send requests and get
responses within an hour or two, the answer was allways correct and
usefull, and we nev
While we are on the subject, is the latest version of Crystal able to use
the BDE (32 bit) or must I have ODBC drivers installed - we use Interbase.
---
New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED]
There are a coupe of components around for ActiveX scripting - checkout
DSP. You can get the MS stuff from http://www.msdn.com/scripting.
There is also the Dream Controls - available from dream.com (?) or DSP.
This seems to good to be true as it gives you a full Delphi interpreter and
Delphi l
Oh, the joys of NT desktop sessions and security. You will need to have
the dll 'run' as a specific user to install a printer driver for the user
account that is running the dll. If it's IIS 4 then your NTS setup should
let you specifiy the identity.
Dave O'Brien <[EMAIL PROTECTED]> on 1
I think the answer to my original question is 'No', it can't be done.
What's the point of having edit masks if they can't cope with a simple
currency value?
Thanks anyway
Myles Penlington <[EMAIL PROTECTED]> on 09/03/99 12:44:54
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It's a string grid so that's no good.
[EMAIL PROTECTED] (Rohit Gupta) on 05/03/99 23:01:13
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Subject: R
Check out Dan Miser's site
http://www.execpc.com/dmiser~
As he is a Delphi/Com guru his list of reccommended book is probably the
best.
Tony Blomfield <[EMAIL PROTECTED]> on 04/03/99 07:14:31
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The standard edit mask should do this but I've never figured it out. How
do I specify an edit mask for a $ value? If I use '###0.00' then the user
can enter '12 .45' (with space)
Please dont tell me to use a 3rd party control cause I cant.
It's an Object Pascal compiler - not a Delphi compiler. So any VCL will
need to be ported.
Jeremy Coulter <[EMAIL PROTECTED]> on 03/03/99 14:07:11
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For some reason I can't upload to the ftp site so you will need to get it
from:
http://tfdec1.fys.kuleuven.ac.be/~michael/fpc/fpc.html
[EMAIL PROTECTED] on 03/03/99 13:41:26
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I'll upload it to ftp.delphi.org.nz. It's called fpc-0_99_10_ELF.tar. I
beleive there is an RPM version tho. If you want non Linux versions you
can have a look inside the tar file for the web address.
Have a look in about 1/2 an hour.
Cheers
"Harding, Arran" <[EMAIL PROTECTED]> on 03/03/
I've got it but haven't managed to install it as I cant get the network
going and the install is greater than 1 floppies worth!
The same version is also ported to Windows/DOS I beleive so you could try
it there. Also, the is a shareware/commercial product called Sybil (yuk)
that looks like Del
The basic rule with this decison (I have found) is that if you don't write
it multiuser/client-server now, then it won't happen at all - not without a
rewrite anyway. Good C/S development requires time to learn and trying to
adapt a single user app/database to a multiuser environment is never g
>>Why is it so persistently not happening with IB ? Year by year people
just
>>do not start raving about it ? Are they all blind ?
Yes
---
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Any multi-tier tecniques for conencting to IB are covered in the license.
You would still need to purchase licenses for every user even if you only
had 1 real connection to the IB server.
Peter Vroegop <[EMAIL PROTECTED]> on 28/02/99 19:34:45
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You can get IB 4 for Linux for free and your Internet customers would
probably love that!
"Jeremy Coulter" <[EMAIL PROTECTED]> on 28/02/99 16:05:19
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I would allmost totally agree with Nic on this one.
We did an extensive comparision about a year ago between IB 5 and (beta) MS
SQL 7. In the end we chose IB cause we wanted to sleep at night. However,
it took until IB 5.5 before Interbase delivered on it's promise.
I still feel that MS SQL
Arggghhh, sorry, I said db file but what I really meant was dbF file.
This is probably why it wont work. I have since created a new table, batch
moved the record and deleted/renamed. This works fine, but it probably
slower.
Cheers
"Max Renshaw-Fox" <[EMAIL PROTECTED]> on 25/02/99 11:
Oh, this didn't work - 'Capability not supported'.
Got any other ideas?
"Max Renshaw-Fox" <[EMAIL PROTECTED]> on 23/02/99 20:31:30
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Technolo
I have a program that reads from a shared db file. I need to add a new
column to the table if it is not already in it. Does anyone have a small
sample of how to do this?
---
New Zealand Delphi Users group - Delphi Li
Some non-standard dialoects also have a first/last keyword (Transact SQL
does I thing ... It's been a while since I used Sybase).
"Max Renshaw-Fox" <[EMAIL PROTECTED]> on 17/02/99 14:17:30
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Could someone with D 4.02 please try something for me, just to prove that
I'm not going mad?
I have created an NT service that works fine except that it shutsdown when
I logout.
I tried creating a new service application from scratch, simply by doing a
New/Service Applciation and compiling, in
In my RDM's I have a TDatabase and TSession component. I have been having
some strange errors - such as session name missing and BDE AV's in
IDAPI32.DLL etc. So I was wondering what the 'correct' settings are for a
TDatabase and TSession component in a RDM? - particularly the
KeepConnections a
Dunno which compress component you use but we use TCompress from SPIS and I
can reccommend it highly.
For the ftp site login as anonymous with your email address as the password
- or do it thru your browser. ftp.delphi.org.nz.
"Matthew Comb" <[EMAIL PROTECTED]> on 09/02/99 09:11:49
Ple
I can't help directly but you might wanna do a quick test with FreeIB Comps
and compare the results. Another thought, does the field ever contain a
char(0)? Can you make it a text blob? Is the field char or varchar?
Tried a different BDE?
"Peter Hyde" <[EMAIL PROTECTED]> on 01/02/99 22:42
For extensive barcode support try [EMAIL PROTECTED] or
http://www.hexcom.com
[EMAIL PROTECTED] on 29/01/99 05:08:06
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Technology/Christchu
Yes, correct.
It is on ftp.delphi.org also.
"Jeremy Coulter" <[EMAIL PROTECTED]> on 27/01/99 08:38:25
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Given the number of clients and the frequency of instantiations required
you should be fine loading on demand. However, there's no gaurentee this
will solve the problem as the COM server may still hang at an inconvienient
moment.
The Microsoft way of doing this sort of thing would be to use MT
I have BoundsChecker if you wanna borrow it. It may point out something
that Slueth doesn't. Give me a call.
Just a thought do any of the indexes involved have expressions rather
than fields?
"Steven Wild" <[EMAIL PROTECTED]> on 26/01/99 09:54:57
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What version of BDE are you using Steve? We are using 5.01 with D3 and D4
and it's ok. I think/hope. You could easily try an older/new version
with your Slueth test.
"Steven Wild" <[EMAIL PROTECTED]> on 25/01/99 04:16:04
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Your a life saver.
I modified the packages cfg file and fixed the invalid compiler directive
but I still get an error not finding the defined symbol in a library unit.
Can you tell me, if the package has a cfg file should I still have
DCC32.CFG and if I do which one gets used?
Struan Jud
I'm trying to create a build process using batch files & DCC32 for D3 and
D4 projects.
When I try to build a package with D4 I get the following error:
Borland Delphi Version 12.0 Copyright (c) 1983,98 Inprise
Corporation
Warning: Invalid compiler directive: 'files\borland\delphi4
Actually it's more like this.
1: Create a new project.
2: Add a automation objects/ com objects to the project.
3: Deinfe and implement the interface in the TL editor.
4: Compile and run the server to register it.
5: Create a client project.
6: Import the type library form your server.
7:
After using COM objects in D3 and Automation Objects in D2 for about 3
years I can tell you quiet categorically -
DONT USE DCOM ! EVER !!
With D3/4 you have the option of using the socket server. We have found
this to be as fast (if not faster) than DCOM, it works well on 95 an
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> Subject: Re: [DUG]: Y2k issue
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Make the users get used to 4 digit years. I've been usi
You would probably have to code that yourself. The reg file is easy enough
to read.
"Matthew Comb" <[EMAIL PROTECTED]> on 24/12/98 10:27:31
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cc:(bcc: Peter Jones/Logistics&Information
I have a little utility call OLERegistration that comes with source code.
It is a shell extension that allows you to rights click exe's and dlls to
reg and unreg them. We have hacked the source of this to register during
install with our custom installer proggie.
I'll upload to ftp.delphi.org.
It's there now. It's actuall called ICONTBAR.ZIP.
[EMAIL PROTECTED] on 23/12/98 15:18:45
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cc:(bcc: Peter Jones/Logistics&Information
Technology/Christchurch/Foodstuffs)
Subject: Re
I have a small component I got from somewhere some time ago. It does the
job quite nicely. I'll upload it to ftp.delphi.org. It's called
ICONTB.ZIP.
Cheers.
[EMAIL PROTECTED] on 23/12/98 15:05:18
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