Story Category: Software Development

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delphi – What are the list of all possible values for DVCLAL? – Stack Overflow

jpluimers 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

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Tracking down Delphi “abstract error” occassions.

jpluimers 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

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Be careful changing the DataContext of a TRemotable

jpluimers 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

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Pointers are dangerous – twm’s blog

jpluimers 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

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Since Delphi still does not include a TDateTimeHelper: use the one by colini which has tests

jpluimers jpluimers These are quite OK: [WayBack] GitHub – colinj/TDateTimeHelper: Helper record for TDateTime type in [WayBack] DateTimeHelper.pas with DUnitX tests in [WayBack] TDateTimeHelper.Tests.pas. Via: [WayBack] Does Delphi XE 10.2.2 ship with type helpers … … Read more 4 years ago in Delphi, Development, Software Development 0

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Learned about the {$EXTENSION zzz} or {$E zzz} Delphi directive: {$EXTENSION yyy.zzz} fails

jpluimers 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

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FastMM PushAllocationGroup

jpluimers 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

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Spring4D Mock – Delphi Unit Testing : Writing a simple spy for the CUT – Stack Overflow

jpluimers 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

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delphi – How to convert a null terminated string to string? – Stack Overflow

jpluimers jpluimers An old trick that I tend to forget: [WayBack] delphi – How to convert a null terminated string to string? – Stack Overflow: You can assign a null-terminated PChar directly to a String: function GetFileName(DiskName: TFileNameIO): string; begin… … Read more 4 years ago in Delphi, Development, Software Development 0

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Automated testing Windows applications using Katalon and WinAppDriver

jpluimers 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

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Delphi: get timestamp as ISO8601 string for use in filenames

jpluimers jpluimers On Windows, filenames do not like some characters (including : and +), so this is a quick way to get a timestamp into ISO8601 format that is compatible with filenames. TimeStamp := Now(); StartIso8601String := DateToISO8601(TimeStamp,… … Read more 4 years ago in Delphi, Development, Software Development 0