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John Kouraklis

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Everything posted by John Kouraklis

  1. John Kouraklis

    How to iterate a TDictionary using RTTI and TValue

    @Remy Lebeau Wow....Amazing and complicated stuff. So I really need to drill down to the enumerator to get hold of the pairs. Thanks a lot for this!!! You mentioned that it might be unreliable to do this with generics. Do you think the app may crash for more complex dictionaries? Because it doesn't exist. For a dictionary, TKey and TValue are Generic parameters of the TDictionary class. They are not standalone concrete types, like you are thinking of. And out of curiosity, how does the compiler recognise TKey then? It must be from the HPPEMIT directive, right?
  2. John Kouraklis

    How to iterate a TDictionary using RTTI and TValue

    The whole code is part of a serialiser, so the dictionary type is unknown to the RTTI code. In the code above, I replaced TKey with string because I couldn't find the declaration of TKey.
  3. John Kouraklis

    How to iterate a TDictionary using RTTI and TValue

    Ok, now the more important problem as stated in the beginning. In this code, genDict throws an exception although propValue is correct program Project1; {$APPTYPE CONSOLE} {$R *.res} uses System.SysUtils, System.Generics.Collections, System.Rtti; type TObjDic = TObjectDictionary<string, string>; TMClass = class private fMC: TObjDic; public constructor Create; destructor Destroy; override; property MC: TObjDic read fMC write fMC; end; constructor TMClass.Create; begin inherited; fMC:=TObjDic.create; end; destructor TMClass.Destroy; begin fMC.Free; inherited; end; var mc: TMClass; ctx: TRttiContext; rType: TRttiType; rProp: TRttiProperty; propValue: TValue; genDict: TObjectDictionary<string, TValue>; begin mc:=TMClass.Create; rType := ctx.GetType(mc.ClassInfo); rProp:=rType.GetProperty('MC'); // In this code, this may seem redundant but I use this code is part of // bigger codebase propValue:=rProp.GetValue(mc); genDict:=nil; genDict:=propvalue.AsObject as TObjectDictionary<string, TValue>; if Assigned(genDict) then begin for var str in genDict.Keys do begin // For demo var f:=str; end; genDict.Free; end; mc.Free; end.
  4. John Kouraklis

    How to iterate a TDictionary using RTTI and TValue

    I found out that TKey in my code is declared (for unexplained reasons) in Data.DBXCommon with is irrelevant. Maybe that is the cause of the AVs I get. But now I don't seem to be able to declare TKey as data type although I include System.Generics.Collections. How do I declare it in a unit? It is originally declared using $HPPEMIT (Generics.Collections, line 750)
  5. John Kouraklis

    How to iterate a TDictionary using RTTI and TValue

    Hi Remy, I tried that (.AsType....) before as well; I run to the same problem of using TKey which is an abstract class although I can see in the debugger that the object points to the content of the dictionary.]
  6. John Kouraklis

    Just wanted to brag a bit :-)

    Amazing! Do you use any libraries on FMX for the GUI? Looks very responsive
  7. Hi all, I am fiddling with LiveBindings Expression engine and I know how to evaluate expressions, use objects, add custom functions. What I am struggling though is to evaluate logical expressions. For example this type: (3=5) and 8 Anyone knows how to do this? Thanks
  8. John Kouraklis

    LiveBindings and evaluating logical expressions

    @ErikB Hi Erik, just saw your reply. I will have a look at the link; thanks. Yes; I remember. It was a pleasure meeting you. Regards John
  9. John Kouraklis

    Advertising supported delphi desktop application

    I researched a lot this because I wanted to include ads in my desktop app as well. The bottom line is that all the content publishers support only mobile apps. I have seen the link you give before but I am unclear as to whether it works. I doubt TBH. Google ads does not allow desktop apps indeed and they ban your account even if you "fake" a website withing a browser component. I have a app on my desktop (TuneIn) that shows ads from google. In earlier versions, they were using Taboola but now they moved to Google Ads. When I was reaching out people from the ad networks, they all told me that the app is using a few google accounts and cycles them so detection is avoided. They also said that eventually google will figure it. If you download the app, you can click and drag and select all the components in the window; pretty much what you do in a web page. This makes me think that the app is written with some sort of web framework and is mocking a website and thus the ads show normally. One of those people I talked to said that in general revenue from ads in desktop apps is extremely low which in practice makes it a worthless choice unless you have 4-5 million downloads. He suggested to consider other forms of licensing, like freemium, etc.
  10. Hi all, diving into the world of microservices in Delphi. Here we go: www.kouraklis.com/2020/01/microservices-in-delphi-part-1/ Thanks
  11. John Kouraklis

    Pimlico: Microservices in Delphi - Part 1

    Friends also give the option to friends to use or not Synchronize 🙂
  12. John Kouraklis

    Can't assign app icon

    Hi, I had icons assigned to one of my projects and now all of the sudden delphi doesn't use them. Instead, when the FMX app runs I see the generic icon from windows. When I go to App Options, my icons appear there. Then, I click on Default, the icons change in the Options dialog but again not used when I execute the app I get the generic icon again. I've checked the .dprog file and deleted the entries with icons and reassigned them in the IDE. Sadly I can't seem to be able to assign icons to the app.
  13. John Kouraklis

    Ads in applications

    Hi, I would like to show some ads in an FMX application. I checked TBannerAd but it seems to work only on Android and iOS. I'd like to show ads on Win and Mac as well. What are the options? Has anyone used TBannerAd? What's the experience? I tried to run the demo that comes with Delphi but in complains that "Java class JAdSize could not be found". I am trying it on Android Nouget. Thanks
  14. John Kouraklis

    Ads in applications

    Hi again, anyone might have a fresh piece of advice to share since I posted it? Thanks
  15. John Kouraklis

    How to restore Windows Store

    By any chance, does anyone know how to restore windows store? I had this idea to get rid of all the unnecessary apps that come with windows and I removed them and windows store from Win 10 via PowerShell. Now, Windows consumes 100% CPU and I can see that processes like wsappx and the like get stuck so I assume that totally removing windows store is not a good idea at all. I tried to reinstall it via PowerShell, Creator Disk to fix Windows Installation and other methods but no luck at all. Before I do a clean installation maybe someone has a tip on this? Thanks
  16. John Kouraklis

    How to restore Windows Store

    @Kas Ob. Yeah...there must be something seriously wrong. I tried the app you sent but it says that win store repair is disabled because win store frequent changes I then downloaded an updated win store repair wizard I found online and it is asking me to login to my email account. But when I try to add an email account the popup window shuts down. So the whole installation is damaged. I will not avoid a clean install. The only thing I am bored of is the installation of all delphi packages Gkrrr....10.4 is far, right 🙂
  17. John Kouraklis

    How to restore Windows Store

    Neither sfc nor dism fixed anything although they said they completed successfully. wsreset sadly fails. I've tried many times before. It says "You'll need a new app to open this ms-window-store link" That's why I believe I need a fresh installation
  18. John Kouraklis

    How to restore Windows Store

    @Kas Ob. I think I tried DISM before but I get some errors saying that the manifest files are not correct. I will try sfc Thanks
  19. John Kouraklis

    How to restore Windows Store

    Well, the experiment was 1 year ago and I recently concluded that this must be the reason windows eat CPU load.... Sadly, no backups are avail.
  20. I have the impression that you can get the tokens from paylane. Other APIs have an endpoint. Maybe you can ask them
  21. @TomDevOps Have a look at the parts about tokens in this guide: https://epayments-api.developer-ingenico.com/c2sapi/v1/en_US/index.html?paymentPlatform=ALL Maybe it helps
  22. John Kouraklis

    Finalization section not called unless main form shown

    Is this a VCL app or FMX? Where does the code appear? In the proj file? if so, it does not really remove the form from being auto created. You just don't use the feature in the IDE Try creating the form using the default way: frmMain:=TfrmMain.Create.... and then assign it to the Application as the MainForm
  23. John Kouraklis

    Anyone successsful with 64bit Android Debugging?

    I always had problems debugging in Android. I only remember a handful of times it was successful. Try to make the device available via adb outside the IDE rather than relying on the IDE to connect. Maybe it will work
  24. John Kouraklis

    Right To Left Components

    Does anyone have experience with RTL languages in Delphi FMX? I've seen FMXRTL.com but I am unable to download any of the demos and code from that website
  25. John Kouraklis

    Cross-platform solution to forcefully end a thread

    Professor Lee is an amazing academic simply because he proves the difference between academia and practice. We need both sides though. Out of curiosity, does the comment in SQLite site implies that they do not use threads internally in the database?