Archive for the ‘Delphi’ Category
Posted by jpluimers on 2016/03/14
Initial hack – image via the forums server.
This weekend, the Embarcadero web site was hacked by AnonCoders . Not once (see also [WayBack ] G+ link and [WayBack ] DelphiPraxis link and [WayBack ] image ) but at least twice (see also [WayBack ] G+ link and [WayBack ] image and [WayBack ] Delphi Praxis link and [WayBack ] image ) where the initial hacked simple text “Hacked By AnonCoders ~ Cyber Caliphate” after having been reverted back to the site – hopefully by Embarcadero staff – was replaced with [WayBack] more graphical content later on.
Hack presenting itself in the IDE – image via the forums server.
The Welcome Page inside the Delphi IDE uses the Embarcadero web site, so the Delphi IDE Welcome Page was also affected (see also [WayBack ] this G+ link ).
Because the IDE uses this on-line content, potentially any code could be executed inside the IDE (apart from that page being loaded over http, so any man-in-the-middle could abuse this, but I digress ). This imposes a security risk as many developers run the IDE from accounts having more rights than the average user.
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Posted in Delphi , Delphi 10 Seattle , Delphi 2005 , Delphi 2006 , Delphi 2007 , Delphi 2009 , Delphi 2010 , Delphi XE , Delphi XE2 , Delphi XE3 , Delphi XE4 , Delphi XE5 , Delphi XE6 , Delphi XE7 , Delphi XE8 , Development , QC , Software Development | 13 Comments »
Posted by jpluimers on 2016/02/24
As Delphi allows to forward declare both classes and interfaces, people often wonder about records.
The short answer: you can’t forward declare record types .
The long answer: you can’t directly, but you can indirectly either reference based (through pointers or callbacks with const parameters ) or operator based (through operator overloading ).
I think the reason forward declaration of classes and interfaces is possible because they both are reference types, so referring does not impose copying.
Anyway, the trick is this:
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Posted in Delphi , Delphi 10 Seattle , Delphi 2007 , Delphi 2009 , Delphi 2010 , Delphi XE , Delphi XE2 , Delphi XE3 , Delphi XE4 , Delphi XE5 , Delphi XE6 , Delphi XE7 , Delphi XE8 , Development , Software Development | Leave a Comment »
Posted by jpluimers on 2016/02/23
Updated the homepage in the source and readme to reflect the move to GitHub.
Source: pleriche/FastMM4@245706d
In related news: Primož Gabrijelčič is contributing to it as well : his pull request got processed https://github.com/pleriche/FastMM4/pull/1 implemented FastReallocMem logger.
–jeroen
via: Edwin Yip Delphi Developers
Posted in Delphi , Development , FastMM , Software Development | Leave a Comment »
Posted by jpluimers on 2016/02/17
A wile ago, I had a this error when trying to get the TIME portion of a DATE column:
ORA-00904: "TIME": invalid identifier
This doesn’t work in Oracle, even though when you search for Oracle convert DATE to TIME you end up at this page listing TIME as a function: 12.7 Date and Time Functions . Alas, that page is for MySQL which is owned by Oracle for a while now .
Back to the query which was like this where date_column was of type DATE .
SELECT
id,
date_column,
TIME (date_column)
FROM some_table
That DATE type actually stores date+time , and since it was filled with Delphi TTime values, the date parts would always be “1899-12-30” (yes, I like ANSI DATE and TIMESTAMP formats ). Oracle doesn’t get that, so I wanted to get the time portion.
Solutions:
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Posted in Database Development , Delphi , Delphi 10 Seattle , Delphi 2005 , Delphi 2006 , Delphi 2007 , Delphi 2009 , Delphi 2010 , Delphi 7 , Delphi XE , Delphi XE2 , Delphi XE3 , Delphi XE4 , Delphi XE5 , Delphi XE6 , Delphi XE7 , Delphi XE8 , Development , OracleDB , Software Development | Leave a Comment »
Posted by jpluimers on 2016/02/14
Now that you’re 21 , have a glass of wine and watch this great presentation by Warren Postma which he made for last years birthday:
VIDEO
–jeroen
Posted in Delphi , Delphi 1 , Delphi 2 , Delphi 2005 , Delphi 2006 , Delphi 2007 , Delphi 2009 , Delphi 2010 , Delphi 3 , Delphi 4 , Delphi 5 , Delphi 6 , Delphi 7 , Delphi 8 , Delphi x64 , Delphi XE , Delphi XE2 , Delphi XE3 , Delphi XE4 , Delphi XE5 , Delphi XE6 , Delphi XE7 , Delphi XE8 , Development , Software Development | Leave a Comment »
Posted by jpluimers on 2016/02/13
Seems they got only released just yesterday because of the QA effort taking a long time. But it’s good news for Delphi/Rad Studio/C++-Builder Update Subscription members: some fixes are now back-ported to 2 Delphi versions. Which is a new milestone in support from Embarcadero.
Anyway: BLDN .
Note that the list of fixes is at the bottom of these pages:
Source: RAD Studio Hotfixes for XE8 and XE7 with 10 Seattle fixes
I also found out that I never updated the links for XE8 update 1 downloads (I did the original XE8 links Delphi XE8 is out with version 22.0.19027.8951; Spring4D is almost ready. « The Wiert Corner – irregular stream of stuff ) so there they are:
–jeroen
Posted in Delphi , Delphi 10 Seattle , Delphi XE7 , Delphi XE8 , Development , Software Development | 2 Comments »
Posted by jpluimers on 2016/02/04
I wrote about this before , named it a cardinal sin too, but I seem to have to repeat this:
When your product thinks the license is validate and quits without allowing the customer to save its work, then you’ve committed a cardinal sin.
Yes, I can talk about cardinal sins : I’ve been named after the artist Hieronymus Bosch (:
For me it is OK if a product checks for binaries that do not to the product (and not signed by the vendor) in the product directories and fails to start, or to present a nag screen that takes a while to disappear, or even to limit functionality.
But:
The product should always tell why the license check failed.
The product never can force the customer to loose work.
The documentation should show failure situations (not just the OK counterparts ).
Given some recent posts and the fact that over the course of 10 different versions I lost days of work and at conferences I usually get multiple questions from people having suffered from this, I really had to bring this up again.
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Posted in Delphi , Development , Licensing , Software Development | 7 Comments »
Posted by jpluimers on 2016/02/03
A while ago I bumped into this: As of Windows 7 (and probably Vista), the standard Windows Common Item (Open and Save) Dialogs expect the main thread to be initialised with STA because it is easier to support apartment threading in single-threaded apartments because COM provides synchronization on a per-call basis and the Windows GUI APIs are not guaranteed to be thread safe.
Windows XP and Server 2003 didn’t enforce this for the classic Windows Open and Save Dialogs , so it only appeared when the software below got run on Windows 7 in a way too late time frame (but the market share of XP is still high ).
The reason is that when using Delphi, the TOpenDialog and TSaveDialog will use the classic Open and Save Dialogs on Windows < Vista and fall-forward to the new Common Item Dialogs handled by TFileOpenDialog and TFileSaveDialog (both will not fall backward).
When you have your COM initialisation done wrong, your application appears to hang. Amidst the plethora of threads started by the COM subsystem, these two dead-lock:
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Posted in Delphi , Delphi 10 Seattle , Delphi 2007 , Delphi 2009 , Delphi 2010 , Delphi XE , Delphi XE2 , Delphi XE3 , Delphi XE4 , Delphi XE5 , Delphi XE6 , Delphi XE7 , Delphi XE8 , Development , Software Development | 2 Comments »
Posted by jpluimers on 2016/01/19
Just in case I need SynEdit in Unicode:
Old SVN versions are at
Newer Github repositories are at
The finaly one has a Demos folder and links to the original ANSI version. It seems the only version for which SynGen works in Unicode Delphi versions.
–jeroen
via Missed link? Anyone know what happens there? :) Once again: 1.SynEdit? … .
Posted in Delphi , Delphi 10 Seattle , Delphi XE , Delphi XE2 , Delphi XE3 , Delphi XE4 , Delphi XE5 , Delphi XE6 , Delphi XE7 , Delphi XE8 , Development , Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 