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David Heffernan

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Everything posted by David Heffernan

  1. David Heffernan

    How to get the actual UTC time??

    You are concentrating on the time zone, but that's not your issue at all. When you get time from somewhere, you will be able to convert to UTC because you will know the time zone associated with the time. Your problem seems to be that you want to use an authorative time source. You should do research on that rather than worrying about time zone conversion.
  2. David Heffernan

    How to get the actual UTC time??

    What source do you want to use for the time, given that you've ruled out the local computer?
  3. "I need to have XXX translated to YYY" seems a little abrupt to me.
  4. What pay rate are you offering?
  5. David Heffernan

    Floating point arithmetics

    Log the floating point control word and see if it is the same in the two programs.
  6. David Heffernan

    gridlines in listboxes

    Use a list view. Part of problem solving is exploring the problem space and finding the best solution, given the pros and cons of all possible options. Deciding on the solution first and then trying to force it to work is not the way to solve problems.
  7. Nothing fundamentally wrong with your option 1, so long as that is the single place where those string literals are written. The array does have the useful benefit of leading to helpful compiler error when enums extended, as discussed. But yeah, none of these options is especially terrible. I'd actually rate option 2 as the worst.
  8. What's your definition of magic string?
  9. Speed isn't the issue. The mistake that you make again and again. Maintainability is the only concern here.
  10. So, the answer is a definitive no. Yeah, you are right, I just assumed that typed constants would be placed in read only memory, as they are in other tool chains. Oh well.
  11. Aren't they placed in read only memory?
  12. Attribute syntax demands true constants
  13. David Heffernan

    Convert Double to Real

    Given this definition type Real = Double; I'd say you don't have much to fear. Of course, this code doesn't compile.
  14. David Heffernan

    TListView filled by Thread = Freeze

    Why do this in a thread? Seems like much complexity for no possible gain.
  15. David Heffernan

    AllocHwnd + TTimer = lag?

    It's not going to be sent many messages. Can you reproduce the behaviour in a cut down program?
  16. David Heffernan

    Get rectangle of the button that was pushed on another form...

    The setup is pretty opaque for us here. These are the sort of details that matter. Without them it's just guesswork.
  17. David Heffernan

    Get rectangle of the button that was pushed on another form...

    Make a note of the coordinates in the code that handles the button click event, and pass that on to other other code. I'm assuming that you are in control of all of the code.
  18. David Heffernan

    Alfabetical order of a letter

    You should check that Length(Str)=1. This fails of course, it doesn't compile. But it's not the code that was suggested. You should take more care when copying code.
  19. David Heffernan

    Alfabetical order of a letter

    Wbat if there are more than 26 columns?
  20. Seems like you should be building the GUI in code rather than the designer.
  21. David Heffernan

    Running .Net Standard Assembly

    Who are you hoping does this? i.e. who is "you" in your question?
  22. David Heffernan

    Calling a Delphi DLL from LabView

    Nah, that's not going be to the cause of the error reported in the original post. Hard to say what is the problem though without knowing the other side of the interface. How can we know how the function is declared in labview? My expectation is that the real issue is a mismatch at the binary interface layer.
  23. David Heffernan

    Physically reduce jpeg image size??

    The thing is, both resizing and compression will change the image and only you can judge which you prefer. It depends on what you are trying to do with these images, what sort of images they are. In my view you need to engage with that side of things first, not in a coding setting, to work out precisely what transformation you want. Then implementing it in code should be simple.
  24. David Heffernan

    Physically reduce jpeg image size??

    Do you want to resize the image or increase the compression? And which framework, vcl or fmx? And if you want to resize, what resampling do you want to use?
  25. It's also pointless to use SetLength in this code because you then throw that array away and replace with a new one.