In what way is this thread safe?
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Maurice Butler
Sent: Thursday, 17 May 2007 10:48 p.m.
To: 'NZ Borland Developers Group - Delphi List'
Subject: RE: [DUG] Best way to make this thread safe
May be of use - the
If you're brave, you can use a helper thread to make the whole operation
thread-safe. That fails the "use as little extra code as possible"
requirement, but is a surprisingly powerful technique and not as difficult
as you might think.
Using synchronize methods in your worker threads can lead to d
ing.
2. Running out of resources. Open the task manager and keep an eye on GDI
objects (the worst), User Obects, Handles etc GDI is the worst. Windows
goes crazy, you cant even shut down. Old version of Nero used to do this.
And ODBC driver for MSSQL did/does it too.
Trevor Jones wrote:
Hell
the problem or does windows need to be restarted?
Rob Martin
Software Engineer
phone +64 03 377 0495
fax +64 03 377 0496
web www.chreos.com
Wild Software Ltd
Trevor Jones wrote:
> Hello,
> Just wondering if any of you have encountered really weird bugs and
> support issues on
List
Subject: Re: [DUG] Long running apps & weirdness
You havent explained the wierdness...
Trevor Jones wrote:
> Hello,
> Just wondering if any of you have encountered really weird bugs and
> support issues on machines that have been running for a long time (without
a
> reboot)
Hello,
Just wondering if any of you have encountered really weird bugs and
support issues on machines that have been running for a long time (without a
reboot).
Recently, I have noticed that we have been getting support calls for
strange app behaviour. The kind of things that are being report
Memo.Lines.Count?
_
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Marshland Engineering
Sent: Friday, 20 April 2007 4:41 p.m.
To: delphi@delphi.org.nz
Subject: [DUG] Memo files Lines
Hi I'm just starting with Delphi.
I need to read a text file (G-Code for CNC)
Title: Message
You need to create a message handler for
WM_QUERYENDSESSION and return true (I think - check the docs).
You can then also write a message handler for
WM_ENDSESSION which you will get if no other program has vetoed the
QUERYENDSESSION if you want to destroy objects etc when th
Howdy,
I have a number of service applications that use the TaskbarCreated
message to bung an icon into the system tray when a user logs on.
Under NT, Win2K and XP, if I log off, then log on again, my tray icon
re-appears (which is good). The service starts without a user being logged
on to
7;ll
give it a go.
Cheers,
Ross.
- Original Message -----
From:
Trevor
Jones
To: Multiple recipients of list delphi
Sent: Thursday, October 16, 2003 2:01
PM
Subject: Re: [DUG]: Threads again
Ross,
My experience with compone
Ross,
My experience with components and threads is
that you should be able to use the Indy Component within your thread without
calling synchronize provided:
a) you manage form destruction well, so that
the component can't be destroyed while the thread is working with
it.
b) you do n
Alistair,
Thanks for providing us with this.
- Original Message -
From: "Alistair George" <[EMAIL PROTECTED]>
To: "Multiple recipients of list delphi" <[EMAIL PROTECTED]>
Sent: Monday, August 04, 2003 4:29 PM
Subject: [DUG]: URLEncode
> Mailstring := 'mailto:' + '[EMAIL PROTECTED]';
Big recommendation...
if your're old enough, and have the
pre-requisities, buy your son an iPOD, then offer to load it up with ALL of his
CDs.
You'll score points with your boy, and get a
whole bunch of new music to listen to.
I'm not trying to be sexist here. I
only have a son,
Have you tried
if Supports(aObject, IFirstInterface,oFirstInterface)
Interface inheritance is different from object inheritance, and can seem odd
until you get your head around it. But the supports function always will
give you the answer you require providing you are using D6 or later.
Trevor
Ooops, sorry, the API function is SetProcessWorkingSetSize.
Trevor
- Original Message -
From: "Trevor Jones" <[EMAIL PROTECTED]>
To: "Multiple recipients of list delphi" <[EMAIL PROTECTED]>
Sent: Wednesday, January 15, 2003 7:10 PM
Subject: Re:
Hi David,
If you are working on any ot the NT based OSes (NT, Windows 2000, XP),
this is normal behaviour. If your Delphi app has allocated and freed the
memory, and the delphi memory manager has done the appropriate stuff, then
you are llooking at the effects of the OS memory manager.
Lots o
The AutoCreate business probably set the visible property of the form to
true.
Try setting it to false, then your showmodal should work.
- Original Message -
From: "Mark Derricutt" <[EMAIL PROTECTED]>
To: "Multiple recipients of list delphi" <[EMAIL PROTECTED]>
Sent: Tuesday, August 20,
Steve:
surely if you have just the one function
function IntToStr(Value: Int64): string;
and it's not overloaded, then the compiler still won't complain.
That's why I was wondering what I had missed
Trevor
- Original Message -
From: "Steve Peacocke" <[EMAIL PROTECTED]>
To: "Multip
I use quite a lot of these in my code, and from time to time need to convert
them to striings, so I use IntToStr in SysUtils.
I've noticed that there are two versions (overloaded) in sysUtils:
{ IntToStr converts the given value to its decimal string representation. }
function IntToStr(Value: I
Check out the WaitForMultipleObjects windows API call. It works with an
array of "Waitable" handles and you can specify a timeout.
If the component you use doesn't provide you with any "Waitable" handles,
you can easily create one of your own with the CreateEvent API call and get
your component
- Original Message -
From: <[EMAIL PROTECTED]>
To: "Multiple recipients of list delphi" <[EMAIL PROTECTED]>
Sent: Tuesday, October 02, 2001 3:40 PM
Subject: [DUG]: first error fixed, now for the second
ok i managed to fix the first error i must have had a ctrl character
in there but the
There is need to recompile DesignInfo.pas. Any references to "DsgnIntf"
should be changed to "DesignIntf" and DesignIDE should be added to the list of
required packages in an package using DesignIntf.
The DesignIntf and DesignEditors units are for design-time use only. They
shouldn't be used
- Original Message -
From: "Mark Howard" <[EMAIL PROTECTED]>
To: "Multiple recipients of list delphi" <[EMAIL PROTECTED]>
Sent: Monday, October 01, 2001 5:14 PM
Subject: Re: [DUG]: Paradox SQL - Group totals as % of Grand total
> Thanks for the reply Cheng
> (nothing at all wrong with y
I think I've spotted it!
The syntax highlighting should have shown you what was going on
The problem is that you are not terminating the strings correctly (as if you
didn't already know that).
inputbox( 'Name Search', // string is terminated correctly
'Enter the name you''re looking for', /
the data is unsorted and the file is opened when the program is ran.
so i type in your function and then call it by find in the
bitbutton1.click procedure?
...
Brendon Toogood
Pretty much yeah.
eg:
TMyForm.BitButton1.click( sender : TObject )
var
SearchText : string;
tmp : address
> > You don't say whether the data in your .dat file is sorted, or how
many
> > entries you are likely to be expecting, or whether you're developing for
> > Win32 or Win16.
>
> Win16?Yikes.
>
> -ns
Nello,
Storing data in an unsorted .dat file doesn't also make you go yikes?
--
Brendon,
You don't say whether the data in your .dat file is sorted, or how many
entries you are likely to be expecting, or whether you're developing for
Win32 or Win16.
However:
If the records in the .dat file are unsorted and you don't want to lad the
entire file into memory, you are going
I know this comment is way of the mark in helping you out for
this situation,but this sort of problem is why I ditched Quick Reports quite
some time ago and switched to using FastReport.
Grouping is where it really stands out..sub-totals are no
problem at all - even as percentages. Its a
Just a question really.
Do you use Interbase? Do you also spend a bunch of time trying to figure
out which indicies to create? and are they only to support performance in
your stored procs? Do you wish you could use cursors in your stored procs?
Would you like to be able to use a stored proc or
> How do I compile an AVI file into the exe. I see that the TAnimate
> component allows me to load the AVI from a resource... So I gather I
> need a resource editor, which Delphi doesn't seem to supply... (I had a
> look at the very (very very) old Resource Workshop that came with one or
> other v
When you register the TADSVenue entity component (with
registerComponents), also call registerClass for TBaseAttributeProperties.
The Object Inspector should then be able to understand (and expand)
it.
- Original Message -
From:
Donovan J.
Edye
To: Multiple recipients
tampToDateTime will raise an EConvertError on
the returned TimeStamp. ..."
Perhaps a Borland staff member can elaborate? One
would guess Borland will issue a caution and workaround
soon.
Regards
Russell
- Original Message -
From:
Trevor
I have 4, 5, and 6 all installed on the same
machine.
The only problem I have is with D6 itself: BEWARE
if you use TTimeFields in your database you may run into problems.
Certainly with IBXpress TTimeFields are currently broken. There is a
workaround but not if you use packages.
-
> then instead of
> var
> MyForm : TMyForm;
>
> delete the IDE created variable and add
>
> type
> TCreateMyForm = function( aOwner : TComponent ) : TMyForm;
>
> var
> CreateMyForm : TCreateMyForm;
>
and if you think they shouldn't be called virtual constructors, what about
constructor fu
>Global variables means non-object-oriented, non-reusable,
>non-understandable, non-maintainable code. Try building a large project
>with everything global and find out!
Your friend and mine, the Delphi IDE automatically creates a global variable
for each form you design. If they're that bad, wh
I'm not sure about the excel stuff, but its worth having a look at Fast
Report www.fastreport.ru
It is good, cheap and, well, FAST, has a good designer, and supports dialogs
for parameter entry as part of the report itself
- Original Message -
From: "Sergei Stenkov" <[EMAIL PROTECTED]>
T
The problem is simply that TPoint is a record, not an object, and the
language does not allow comparison operators or records. You'll need to do
comparisons on the fields of the records i.e if (value.x <> fCenter.x) or
value.Y <> fCenter.Y )
and so on...
- Original Message -
From: "Chris
If you're especially lazy and want something else to do all the work, try
using an imagelist
(I'm assuming your four little bitmaps are the sime size and shape)
The in your OnDrawCell event you can use
ImageList.Draw( Canvas, Rect.Left, Rect.Top, ImageIndex )
Be sure to set your imagelist maske
- Original Message -
From: Weston Bell <[EMAIL PROTECTED]>
To: Multiple recipients of list delphi <[EMAIL PROTECTED]>
Sent: Tuesday, October 17, 2000 8:34 AM
Subject: [DUG]: TMemos & StringGrids
> Hi,
> Can anyone help me with placing a schedule of items and amounts
> in a memo
Are you using a Version 6 Beta? if so your license may have expired
yesterday. Visit then interbase site to get an extension of your beta
license
-Original Message-
From: Tony Sinclair <[EMAIL PROTECTED]>
To: Multiple recipients of list delphi <[EMAIL PROTECTED]>
Date: Wednesday, May 24,
- Original Message -
From: Max Nilson <[EMAIL PROTECTED]>
To: Multiple recipients of list delphi <[EMAIL PROTECTED]>
Sent: Monday, December 20, 1999 3:20 PM
Subject: RE: [DUG]: I've had it up to here with TEdit descendants
> Trevor asked:
>
> > ...and I'm sure that I'm not the only one.
- Original Message -
From: Neven MacEwan <[EMAIL PROTECTED]>
To: Multiple recipients of list delphi <[EMAIL PROTECTED]>
Sent: Monday, December 20, 1999 4:25 PM
Subject: Re: [DUG]: I've had it up to here with TEdit descendants
> Trevor
>
> Funny but I've just been contemplating the same
...and I'm sure that I'm not the only one.
Problem: I need a really good numeric entry field which can be set to accept
either integral values or non-integral values with a specified precision
Potential solutions: Scan the Net for TCurrencyEdit kinda things, try each,
discover HUGE shortcomings,
Aaron: after many years of dealing with many different types of barcode
readers, may I share with you some recommendations?
1) If at all possible, use a serial barcode reader. These typically operate
at 9600bps whereas the keyboard usually runs at 300bps. The higher serial
speed will make your
in your project source file, after application.initialize put
if Comserver.StartMode = smAutomation then
Application.Showmainform := false;
You will need to add ComServ to the uses list in the project source
-Original Message-
From: Peter Harrison IT <[EMAIL PROTECTED]>
To: Multiple
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