Story Category: Conferences
VOTEDelphi processing all Windows messages
jpluimers
Since I had captures messages inside the main message loop, I forgot it is straightforward: create a [WayBack] TApplicationEvents instance, then use the [WayBack] OnMessage event and hook it to a method like procedure TMainForm.ApplicationEventsMessage(var Msg: TMsg; var… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
0
How to debug Delphi JSON export stack-overflows: watch the fields and their circular references
jpluimers
Unlike Delphi RTL XML support which is property based, the JSON support is field based. By default, JSON uses all fields (no matter their protection level, so anything from strict private to published is taken into… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
0
In Delphi, avoid having a TComponent descendant implement interfaces, unless you are prepared to handle your refcounting
jpluimers
Every now and then I see code, where a class descending from TComponent implements some interfaces, only interface references are used to the instances, and the expected behaviour is that the instances will free themselves when… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
0
A bunch of Spring4D dependency injection container related questions
jpluimers
Since G+ is down, a lot of interesting questions have vanished. Luckily I saved some by [WayBack] Jacek Laskowski – Google+ related to Spring4D and dependency injection: [WayBack] Spring4D IoC and specific singleton… – Jacek Laskowski –… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
0
Do not make methods protected unless you want them to be visible as public
jpluimers
One of the protection levels in Delphi is protected. Originally meant for the class itself, that level is also visible to “friends”: anything in the same unit, for example: unit BusinessLogicUnit; interface type TBusinessLogic =… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
0
delphi – What are the list of all possible values for DVCLAL? – Stack Overflow
jpluimers
From a while ago, from notes even longer ago – around 1994 on DVCLAL the Delphi VCL Access License code which is actually a checking logic for determining the SKU (stock keeping unit) or Delphi… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, History, Software Development
0
Tracking down Delphi “abstract error” occassions.
jpluimers
A few tips. Set breakpoints in these units: System.pas: procedure _AbstractError; begin if Assigned(AbstractErrorProc) then AbstractErrorProc; RunErrorAt(210, ReturnAddress); end; System.SysUtils.pas: procedure AbstractErrorHandler; begin raise EAbstractError.CreateRes(@SAbstractError); end; add a watch for ClassName that has “Allow side… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
0
Be careful changing the DataContext of a TRemotable
jpluimers
Still not sure why the RTL code is like this: procedure TRemotable.SetDataContext(Value: TDataContext); begin if (RemotableDataContext <> nil) and (RemotableDataContext = Self.DataContext) then begin TDataContext(RemotableDataContext).RemoveObjectToDestroy(Self); end; FDataContext := Value; end; It means that if you… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
0
Pointers are dangerous – twm’s blog
jpluimers
TL;DR Do not keep pointers to objects in memory that can be relocated. SetLength can relocate the memory [WayBack] Pointers are dangerous – twm’s blog Via: [WayBack] Pointers can be really helpful, especially they can improve… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
0
Book “Delphi GUI Programming with FireMonkey”, now available!
Andrea Magni
The day has come: my book is now available on PacktPub (link) and Amazon (link US, link IT) websites. It has been pre-order only till today, since a couple of … years! 😉 (PS: printed… … Read more
4 years ago in book, Conferences, Delphi, English, events, FireMonkey, FMX, iot, Mobile, Uncategorized
0
Learned about the {$EXTENSION zzz} or {$E zzz} Delphi directive: {$EXTENSION yyy.zzz} fails
jpluimers
I totally missed that this has been added in Delphi a long time ago (at least in Delphi 2007 or maybe even before): the {$EXTENSION zzz} or {$E zzz} Delphi directive that sets the file extension… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
0
FastMM PushAllocationGroup
jpluimers
Few people seem to know about the FastMM PushAllocationGroup method. This search returned almost nothing: fastmm PushAllocationGroup -site:github.com -site:sourceforge.net -site:stackoverflow.com – Google Search. These results were convoluted: fastmm PushAllocationGroup site:sourceforge.net – Google Search fastmm PushAllocationGroup site:stackoverflow.com – Google… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, FastMM, Software Development
0
Spring4D Mock – Delphi Unit Testing : Writing a simple spy for the CUT – Stack Overflow
jpluimers
Reminder to self: write a longer article on Delphi mocking as Spring4D mocking is much better than Delphi Mocks, especially because of code-completion reasons. Spring4D has a Mock record that can return a Mock<T> on… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development, Spring4D
0
Automated testing Windows applications using Katalon and WinAppDriver
jpluimers
[WayBack] Top 45 Best Automation Testing Tools Ultimate List • Test Automation Made Easy: Tools, Tips & Training Awesomeness A few notes, partially related to Enable your device for development – UWP app developer | Microsoft… … Read more
4 years ago in .NET, Conference Topics, Conferences, Delphi, Development, Event, Software Development, Windows Development, WinForms, WPF
0
From Delphi 1: Type Compatibility and Identity
jpluimers
A feature overlooked by many Delphi programmer was already introduced in Delphi 1 which is more or less the same as in the Delphi 2007 documentation at [WayBack] Type Compatibility and Identity. There is a… … Read more
5 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development
0