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Vandrovnik

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Everything posted by Vandrovnik

  1. Have you tried to use lower resolution and turn the light on?
  2. I have seen the same problem and have "solved" it this way: Kamera.Quality := FMX.Media.TVideoCaptureQuality.LowQuality; Kamera.Quality := FMX.Media.TVideoCaptureQuality.MediumQuality;
  3. Vandrovnik

    Detect Windows shutdown?

    The declaration must be outside of the form...
  4. Vandrovnik

    Detect Windows shutdown?

    Did you read, what Cristian Peța linked? function ShutdownBlockReasonCreate(hWnd: HWND; Reason: LPCWSTR): Bool; stdcall; external user32; function ShutdownBlockReasonDestroy(hWnd: HWND): Bool; stdcall; external user32;
  5. I believe Anders is right. Class reference is just a pointer - its size is known. When you use this class as a member of another class (fChild: tChild, where tChild is a class), you cannot reference its members in properties (property x: integer read fChild.x). If fChild is a record (fChild: tChild, where tChild is a record), you can reference its members in properties, like in Anders' example (property x: integer read fChild.x).
  6. If size was the only problem, I can imagine something like this ("human preprocessor"): type tRecordA = record of size 8; tRecordB = record ... function Test: tRecordA; end; tRecordA = record x, y: integer; end;
  7. Something like a record helper 🙂 I always wonder why there can be just one class/record helper...
  8. Vandrovnik

    Delphi Rio IDE hangs again and again

    Or NativeInt(pointer(... or NativeUInt(pointer(... Just when I see this typecasting pointer to integer, I can't help thinking that 64 bit IDE is far away 🙂
  9. Vandrovnik

    Delphi Rio IDE hangs again and again

    64 bit IDE would probably require all design time packages to be 64 bit, too... I was surprised to see typecast "integer(pointer(..." in https://blog.marcocantu.com/blog/2020-may-custom-managed-records.html ...
  10. Vandrovnik

    Function with just underscore _() seems to be valid

    With this info in mind, for bad customers you can start programming like that: const _ = 1; _____ = 2; x = _____ + (_-_-_) + 0 + _+0-0+_ ;
  11. Vandrovnik

    Parallel for 32 vrs 64bits

    May be https://github.com/neslib/FastMath and/or http://docwiki.embarcadero.com/RADStudio/Rio/en/Floating_point_precision_control_(Delphi_for_x64) can help.
  12. Vandrovnik

    Profiler for Delphi

    Hello, Please can you advise a profiler for Win32/Win64 applications (made in Delphi)? Free, when possible (I do not need the profiler often). What I have found using Google was expensive or quite outdated or buggy. Kind regards, Karel
  13. tDictionary alone will not allow you to store more values for the same key (it seems you need it: "I get all values of (TKey1 = 1) for the data. "). You could use two dictionaries: tDictionary<tKey1, tObjectList> tDictionary<tKey2, tObjectList> In these object lists, there will be all objects with corresponding values of the tKey1, resp. tKey2.
  14. Vandrovnik

    Delphi Closedown Error

    It happens to me +- once every two weeks, too.
  15. Vandrovnik

    TListBox, TListView how to use Sort(Compare) ?

    Sorry, I did not read carrefully the title.
  16. Vandrovnik

    TListBox, TListView how to use Sort(Compare) ?

    You mean something like this? type tSledovaniVykonuSeznamVysledku=class(tObjectList<tSledovaniVykonuVysledky>) ... var Cmp: IComparer<tSledovaniVykonuVysledky>; begin Cmp:=tDelegatedComparer<tSledovaniVykonuVysledky>.Create( function(const Left, Right: tSledovaniVykonuVysledky): Integer begin result:=CompareStr(Left.Nazev, Right.Nazev); end); Sort(Cmp);
  17. Vandrovnik

    Profiler for Delphi

    Thank you, AsmProfiler suites the best.
  18. I have just tried to download it using Chrome (Czech version 81.0.4044.122 (Oficiální sestavení) (64bitový) ), downloaded without problems, browser allowed me to start the downloaded .exe.
  19. Vandrovnik

    Threading question

    What about remote debugging?
  20. Vandrovnik

    Variant to generic T, how?

    This compiles, but I have not tested, whether it works as expected 🙂 ToField<T> = class(tObject) private fData : T; protected procedure SetFromVariant(const aValue : Variant); end; procedure ToField<T>.SetFromVariant(const aValue: Variant); var val: TValue; begin val := TValue.FromVariant(aValue); fData := val.AsType<T>; end;
  21. Do you have an idea, how many users really need new functions for old versions of Delphi? If there are not many of them, I would suggest to drop support for old versions - you can probably spend your time better than keeping code compatible with old Delphi...
  22. Vandrovnik

    Structure Panel empty - how to get Embarcadero support?

    Probably the same problem as in Project Window https://quality.embarcadero.com/browse/RSP-27182 It is reported, but when it will be fixed...
  23. Vandrovnik

    OpenType file API?

    What about DirectWrite? It should support OpenType fonts.
  24. Vandrovnik

    Random Access Violation?

    Does AV happen on one computer, or all? Every query, or just some (with parameters? with string result? with only integer result? etc.)?
  25. Vandrovnik

    Random Access Violation?

    But he wrote that error happens in external .dll when he opens a query, not in his code.
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