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Everything posted by corneliusdavid
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Have you tried other apps on Android that have a small text edit input to compare how they act? @Lars Fosdaldescribes how it can be done on Android--and yes, that works but I have problems getting it right so more often just backspace or don't even try to scroll. Same thing on iOS.
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Command-line build slower than IDE build
corneliusdavid replied to Raphaël's topic in Delphi IDE and APIs
Interesting. You might try adding the IDE Fix Pack, then: "fastdcc applies the Compiler Speed Pack that is included in IDE Fix Pack to the command line compilers dcc32, dcc64 and dccaarm (XE6 and newer)" -
Right. That's typical on a mobile device--it's not specific to Delphi apps. Basically, you can type forward or backspace to clear it out and type it over. That's why I sometimes hook a Bluetooth keyboard up to my mobile device when I'm writing lots of text--I can use the keyboard arrow keys to navigate past the beginning/end of the visible text. Have you ever sent a long text message with a phone? It's a pain if you've been typing fast then look at what you've typed and realized there's a misspelled word in the middle and you have to somehow select it and type over without losing it or finger-swipe to go back to the top of the paragraph to make sure you didn't miss anything. You could set the MaxLength property of the TEdit so the user can't type a bunch of text; or use a TMemo and make it fill up the screen so the user can see all the text they've typed. Welcome to mobile development!!
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Are you referring to the lack of left/right/home/end buttons, or just the standard user interface on a mobile device? I've never had problems with TEdit text scrolling on mobile devices--I just hook up a Bluetooth keyboard if I want to be able to move the cursor through the text.
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What version of Windows are you running on? Did you see any errors as you were installing Delphi? Can you try "step over" instead of trace into and tell is if it can step through code that way?
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Delphi 11.1 Can't Clean project - reports missing DLL
corneliusdavid replied to Michael Collier's topic in Delphi IDE and APIs
Can you give us some details? Is this a Delphi module or a component or something in the project? What's the specific error message? -
Can Delphi Community Edition 10.4 create a Webbroker app?
corneliusdavid replied to GreatDayDan's topic in Network, Cloud and Web
Yes, the CE version can build WebBroker apps. You can also use it to build Microsoft IIS or Apache web modules but not Linux or DataSnap. Go here: https://www.embarcadero.com/products/delphi/product-editions and download the feature matrix for details.- 1 reply
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Delphi 11.1 Provisioning Access Violation
corneliusdavid replied to Michael Collier's topic in Delphi IDE and APIs
I get access violations once in a while in rtlXXX.bpl (almost any version of Delphi). I'm used to older computers where if something was broke, you just rebooted and got back to work. I find this works 99% of the time with Delphi. I wish it was better but it's really not terribly disruptive because I can work for hours or even days in multiple VMs on multiple projects before I see it and in less than a minute, I'm back where I left off without losing anything. -
(Delphi 11.1) Stack overflow - save your work and restart Delphi 11.
corneliusdavid replied to Michael Collier's topic in Delphi IDE and APIs
I get this every once in awhile. Just follow the directions and get back to work. -
Without describing or posting any part of your project, you can't realistically expect any useful troubleshooting help.
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First of all, THANK YOU @Remy Lebeaufor your contributions over the years to the Indy project, both in development and in support on this and many other forums. So do I and to learn there's only one main developer on this project who doesn't even have a working IDE at the moment is quite concerning. I wish I had the time/knowledge to help.
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Delphi 11.1 installation error : Download file corrupted.
corneliusdavid replied to alogrep's topic in General Help
Yes, that's been the standard recommendation for a long time but there's been work to standardize the installs so that either .iso or web install will work regardless of the method used for the previous install--perhaps they just haven't removed that warning. I don't have a "default" method for installs and, in fact, don't even remember which method I used for which version on which computers. I've never had a problem with the installs (I'm pretty sure I've mixed them up at some point) and am actually puzzled about what's wrong with using a different process for an upgrade than the original install used. -
Here's what I would try: manually download and install .NET. Since the error messages indicate both 4.0 and 4.7 (from what I gather reading your original post), install both versions. Those installs might include additional files that the standard Delphi install is missing or expects to already be in place. It might work--I don't know, I'm just throwing this out there.
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Delphi 11.1 installation error : Download file corrupted.
corneliusdavid replied to alogrep's topic in General Help
Lots of different reasons why downloads or installs fail (internet, disk errors, network, anti-virus, etc). I downloaded both the .iso and the .exe (web install) onto two different computers. The .iso failed to mount on one of them so I used the web install; the .iso worked fine on a different one. All just depends on the particular arrangement of bits in the ether on a particular day, I guess! -
That's good to know. Did the problem just start with Delphi 11?
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Thinking about the original question here a little more, I think the problem might be related to the OS: I think most developers run Delphi on Windows 10, which would have all the libraries a typical Windows user would need for a variety of applications. But Windows Server is not an end-user operating system so leaves many things out. It may be that a manual install of .NET or related libraries/tools may need to be done in order for Delphi to work properly on Windows Server.
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I find refactoring often broken in that it doesn't work but it (to my knowledge) has never crashed Delphi. Out of curiosity, I moved the "refactoride280.bpl" value to a different key, restarted Delphi, and refactoring was no longer in the menu. Theoretically, that's one .NET package out. However, I noticed there's another one named, "dotnetcoreide280.bpl." That's obviously got something to do with .NET. I tried removing that and now compiling a small cross-platform app in Delphi 11.1 gives me the error, "Object reference not set to an instance of an object." I put the registry key back and it compiles fine.
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windows64 application crashes on form resize
corneliusdavid replied to Michael Collier's topic in Cross-platform
What version of Delphi? Do you have code in the OnResize events? Can you create a small example program that demonstrates this problem? -
This is getting off-topic but... I never use the database-level account feature but use one application-level account to connect to the database then provide a login that checks against a user record for authentication. So if your application is built to require database account credentials before connecting, then you're right, the approach I suggested would not work.
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Why isn't this dangerous, or is it?
corneliusdavid replied to Renate Schaaf's topic in Algorithms, Data Structures and Class Design
Create/Free are the calls that allocated/deallocate the memory for an object, an instance of TDoSomething in this case. In your original code, the call to Create in Button1Click but the Free happens in a procedure of TDoSomething--that's where the difference in context is. The only reason it didn't blow up is because you don't reference the object (the DoSomething var) after the call to Free. Look at my first example code above where I point out where an ERROR could occur--that's what COULD have happened to you. -
Why isn't this dangerous, or is it?
corneliusdavid replied to Renate Schaaf's topic in Algorithms, Data Structures and Class Design
I don't think I've ever seen a procedure of a class free the instance of the class it's being called from. Everything in me is screaming DON'T DO IT! This is very bad practice. The object code may still be in memory after the call to Free but it's no longer dedicated to that object and if, per chance, some other operation suddenly uses that available memory, you've got an access violation. And to make an example that shows the problem of the dangling pointer @Attila Kovacspoint out: procedure TForm1.Button1Click(Sender: TObject); begin var DoSomething: TDoSomething := TDoSomething.create; DoSomething.DoSomething; if Assigned(DoSomething) then begin ShowMessage('DoSomething Freed but dangling reference still exists'); DoSomething.DoSomething; // <--- ERROR! end; end; It's better to free the memory outside of the class itself in a try-finally block: procedure TDoSomething.DoSomething; begin ShowMessage('Doing something'); end; procedure TForm1.Button2Click(Sender: TObject); begin var DoSomething: TDoSomething; DoSomething := TDoSomething.create; try DoSomething.DoSomething; finally DoSomething.Free; end; end; This makes it obvious from the calling procedure (the button click event) that the object is freed which lessens the likelihood of using it again because it's right there in the procedure instead of hidden in the class itself. -
There's no one perfect way that everyone should use. Personally, I use two different approaches: If a program uses a database, I keep all the configuration settings in there except for the path/server/port of what is needed to connect to the database and those are set in an .INI file in the same folder as the application during installation. The installer has admin rights so it can create files under Program Files, and the database settings should never be changed--except by an administrator. In this case the INI filename is simply: ChangeFileExt(Application.ExeFilename, '.INI') If a program doesn't use a database and has several options to configure when the program is in use by regular users, the INI filename is: FAppDataPath := TPath.Combine(TPath.GetPublicPath, ChangeFileExt(ExtractFileName(Application.ExeName), EmptyStr)); ForceDirectories(FAppDataPath); FAppConfigFilename := TPath.Combine(FAppDataPath, ChangeFileExt(ExtractFileName(Application.ExeName), '.ini')); This puts the file in a folder under %ProgramData%\MyApp making it global for any users on the computer.
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Command-line build slower than IDE build
corneliusdavid replied to Raphaël's topic in Delphi IDE and APIs
That's not the whole command line; the project file is missing and it looks like an option is cut off. The command-line run by the IDE is likely several lines long as it lists all the library, include, search, resource, and output paths specified in your Delphi environment. -
Here's a better page that provides links for deploying the files for various platforms using the ToGo license you get with the Architect Edition: https://docwiki.embarcadero.com/InterBase/2020/en/ToGo_Quick_Start
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Deploying InterBase requires different files on different platforms. Is this a Windows-only solution or mobile? You might be able to use your IB ToGo license. Start here (it gets complicated): https://interbase.com/deploy/