Story Category: Software Development

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Delphi: some notes on HModule while tracking down an access violation in TRegGroups.UnregisterModuleClasses

jpluimers jpluimers Too bad the whole mechanism involving TRegGroups.UnregisterModuleClasses is not documented anywhere It is the underlying storage to support TClassFinder, which was introduced in Delphi 6, documented on-line in Delphi 2007, documented slightly in Delphi 2009,… … Read more 3 years ago in Conference Topics, Conferences, Delphi, Development, Event, History, Software Development 0

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Delphi: Passing build variables to batch files; I think the easiest is to use environment variables

jpluimers jpluimers A long time ago, I wrote about Delphi prebuild/prelink/postbuild events. In practice, especially that you cannot inherit build events, then add new ones (), it is convenient to put all you need in a script,… … Read more 3 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development 0

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c++ – DLL Load Library – Error Code 126 – Stack Overflow: use Process Monitor, search for the first NAME NOT FOUND

jpluimers jpluimers In addition to [WayBack] c++ – DLL Load Library – Error Code 126 – Stack Overflow while debugging LoadLibrary error 126 Windows dll error 126 can have many root causes. The most useful methods I… … Read more 3 years ago in Delphi, Development, Software Development, Windows Development 0

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Devart ODAC product versions (Oracle Data Access Components History)

jpluimers jpluimers ODAC version history is confusing wheres [WayBack] Oracle Data Access Components – FAQ talks about version 6.00, [WayBack] Oracle Data Access Components History talks about version 10.x.y. The history page is correct. –jeroen … Read more 3 years ago in Delphi, Development, Software Development 0

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Porting old code: Delphi compiler error E2064 Left side cannot be assigned to

jpluimers jpluimers Quoting this in full because it nicely illustrated the introduction of an intermediate variable that cannot be assigned to a second time after initial setup by the with statement: [WayBack] Embarcadero Newsgroup Archive :: embarcadero.public.delphi.ide… … Read more 3 years ago in Delphi, Development, Software Development 0

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msbuild build events can inherit, but not add in addition to inherited build events (so projects in Visual Studio, Delphi and others cannot do that either)

jpluimers jpluimers Bummer: I tried to inherit the build events from a base configuration, then add some extra steps for some of the inheriting configurations. Those configurations just executed the extra steps, not the inherited steps. This… … Read more 3 years ago in .NET, continuous integration, Delphi, Development, MSBUILD, Software Development, Visual Studio and tools 0

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Figure out access violation in Dsmtoolwindow.GetPreferences

jpluimers jpluimers Access violation when loading the Delphi IDE Got the below error on Delphi 10.2 Tokyo with ODAC trial from DevArt at Delphi startup time (Error: Access violation at address 188F3528 in module ‘DataSetManager250.bpl’. Read of address… … Read more 3 years ago in Delphi, Delphi 10.2 Tokyo (Godzilla), Development, Software Development 0

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Delphi: creating copies of installed components to repositories for portability across use cases

jpluimers jpluimers Often it is useful to have 3rd party components part of a repository so it is easier to increase portability. For instance when you want to include or exclude some of them in certain projects… … Read more 3 years ago in Conference Topics, Conferences, Delphi, Delphi 10.2 Tokyo (Godzilla), Development, Event, Software Development 0

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I wanted to know the loaded DLLs in a process like Process Explorer shows, but from the console: Sysinternals ListDLLs to the rescue

jpluimers jpluimers In Windows, historically most people approach investigation GUI first. Having turned 50 a while ago, I am no exception. My real roots however are on the command-line and scripting: roughly 1980s Apple DOS, CP/M, SunOS… … Read more 4 years ago in Conference Topics, Conferences, Delphi, Development, Event, History, Software Development, Windows Development 0

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ODAC default install paths for Delphi 10.2 Tokyo

jpluimers jpluimers A few notes on the ODAC install: Download of x.x.x is at [WayBack] www.devart.com/odac/odac25.exe via [WayBack] www.devart.com/odac/download.html The 25 is DllSuffix minus trailing zero for Delphi 10.2 Tokyo, or the “real” Delphi version; see Delphi… … Read more 4 years ago in Delphi, Development, Software Development 0

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Much Turbo Pascal history (via What is a Delphi DCU file? – Stack Overflow)

jpluimers jpluimers Editing [WayBack] What is a Delphi DCU file? – Stack Overflow for more historic correctness and adding links prompted me to archive some older material and search for some more, basically because while historically very… … Read more 4 years ago in Conference Topics, Conferences, CP/M, Delphi, Development, Event, History, MS-DOS, pascal, Power User, Software Development, Turbo Pascal, UCSD Pascal, Z80 0

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Delphi: EInvalidOp exception, might just mean you have a use-after free scenario, or an out-of-bounds value

jpluimers jpluimers Quite sometime I was researching spurious exceptions in a Delphi application, then finally replicated them in a unit test suite. One of them was occurring almost all of the time: EInvalidOp. It is one of… … Read more 4 years ago in Delphi, Development, Software Development 0