Story Category: Undocumented Delphi
VOTEWhere can I find a comprehensive list of Delphi “compiler magic” declarations? – Stack Overflow
jpluimers
A long time ago, I posted one of the answers to [Wayback/Archive] Where can I find a comprehensive list of Delphi “compiler magic” declarations? – Stack Overflow So for my link archive, these are the… … Read more
2 years ago in Conference Topics, Conferences, Delphi, Development, ekon, Event, Software Development, Undocumented Delphi
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Parser generator toolset for Delphi (Yacc & Lex)
jpluimers
The most current Lex and Yacc for Delphi is [WayBack] GitHub – RomanYankovsky/ndyacclex: Parser generator toolset for Delphi (Yacc & Lex). It came up during a funny Twitter thread, where one of the Delphi team… … Read more
3 years ago in Delphi, Development, Software Development, Undocumented Delphi
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Delphi: got “EOleException with message ‘Microsoft MSXML is not installed’” in a console or test project?
jpluimers
Did you ever get this run-time error in a console or test project? EOleException with message ‘Microsoft MSXML is not installed’ It means that CoInitialize or CoInitializeEx needs to be called in the thread that… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development, Undocumented Delphi
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When your Delphi IDE suddenly skips unsaved changes during compilation(TL;DR: watch early signs your IDE is hosed, then restart without saving)
jpluimers
A while ago, I observed that when compiling, my Delphi IDE would not take into account unsaved changes any more. This ws in a time when I was tracking down some hard to reproduce problems… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development, Undocumented Delphi
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Delphi object instance lifetime demo; do not use AfterConstruction as a poor-mans way to work around non-virtual constructor or undetermined Create hierarchy calls
jpluimers
I think using AfterConstruction is a poor man’s solution that you should only use in exceptional cases, as it is: called only after the last constructor in the chain is called. called outside of the… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development, Undocumented Delphi
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Delphi use of FS segment: structured exception handling
jpluimers
A while ago, I had to trace through a lot of code in the CPU pane to track down some memory allocation related issues. I wondered what the use of the FS segment was about,… … Read more
4 years ago in Delphi, Development, Software Development, Undocumented Delphi, Windows Development
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Short Delphi tip: ensuring RTTI for classes is included
jpluimers
When using RTTI in Delphi, you really want the RTTI to be available. The compiler includes RTTI for classes, as soon as it found that a class is touched by code that will be executed…. … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, Software Development, Undocumented Delphi
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Delphi: quickly failing in use-after free scenarios
jpluimers
Two tricks that can help in use-after-free scenarios. Call ScanMemoryPoolForCorruptions often One of the scenarios of use after free, is that memory blocks get corrupted. FastMM4 normall checks this at process end using the CheckBlocksOnShutdown… … Read more
4 years ago in Conference Topics, Conferences, Delphi, Development, Event, FastMM, Software Development, Undocumented Delphi
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Delphi XE7 introduced const support for dynamic arrays; prior versions used [] only for sets.
jpluimers
A few things to learn from [WayBack] delphi – Constant array of cardinal produces error ‘Constant expression violates subrange bounds” – Stack Overflow: Delphi XE7 introduced compiler support for const dynamic arrays. Compiler errors can completely… … Read more
4 years ago in Delphi, Development, History, Software Development, Undocumented Delphi
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Delphi intrinsic functions that evaluate to consts
jpluimers
A long time ago, I wondered Are these really Windows compiler unsupported Delphi Intrinsic Routines about [WayBack/Archive.is] Delphi Intrinsic Routines – RAD Studio. Today, I limited the documented intrinsic list to the constant intrinsic functions: const… … Read more
4 years ago in Delphi, Development, Software Development, Undocumented Delphi
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On my research list: Delphi “Package Cache” subtree
jpluimers
On one of the sites, when having some Delphi package registration issues, the standard measure was to delete the complete Package Cache subtree (like HKEY_CURRENT_USER\Software\Embarcadero\BDS\17.0\Package Cache). Since there is so little information about it, it is… … Read more
4 years ago in Delphi, Development, Software Development, Undocumented Delphi
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