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Questions tagged [delphi-10.4-sydney]

Delphi 10.4 Sydney is a specific version of Delphi released in May 2020.

363 questions
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How to use TEdgeComponent with oficial release of Microsoft Edge

Is it possible to use the Delphi 10.4 TEdgeComponent with the official release of Microsoft Edge and WebView2 insted of the Edge Canary channel? I have installed the oficial release of edge with the latest WebView2 avaiable…
Leo Bruno
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TryStrToFloat keeps returning false

I'm trying to test an value coming from a TEdit, that needs to be converted to a Double. The problem I'm having is that the function TryStrToFloat keeps on returning false, no matter what I do. var str : String; value : Double; …
Japster
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How to CENTER and STRETCH/SHRINK SVG display in TWebBrowser?

In a Delphi 10.4.2 Win32 VCL Application on Windows 10 x64, I use a TWebBrowser component to display local SVG files. The TWebBrowser component has these properties: object wb1: TWebBrowser Left = 0 Top = 0 Width = 936 Height = 578 Align =…
user1580348
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Delphi 10.4: Indy TIdTCPClient Reading Data from websocket and webserver

I am trying to read real time data being sent every 4 ms from a server. I am using a TCPclinet in Delphi 10.4 and Indy 10 for a cross platform application. All the communication between the client and server is text based and html. The server is…
na38
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Can't fetch email from gmail using Indy

I use TIdPOP3 a lot, and it works great, except for GMail accounts. Somehow it never works. I tried different combinations and ports, with and without SSL, and it always returns different errors. My most recent try was to create an 'app specific'…
delphirules
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Why do TPanel.Canvas.Font properties (accessed with protected hack) differ from TPanel.Font properties?

I'm using the DrawTextRotatedB function from Josef Švejk's excellent answer to the question How to draw text in a canvas vertical + horizontal with Delphi 10.2 to draw text vertically on a TPanel. That component does not have a public Canvas…
Jan Doggen
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PAServer debugging stops working after exception

When I debug an app using PAServer (21.0), no matter on which platform, if exception was raised, and I then try to continue debugging (using Run - Run (F9)), all debugging functionality stops working, as if I chose Run - Detach From Program, even if…
Serhii Kheilyk
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Develop for Android 5.1 on Delphi 10.4?

I am using Delphi 10.4 to develop for Android. I have a Motorola XT1060 running Android 5.1 that is compatible with Delphi 10.3 but generates a OLDER_SDK error on Delphi 10.4. The Android Syscheck utility results suggest the phone should meet the…
David U
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`System.CopyArray` vs `System.Copy`?

Apart from the obvious difference that the first deals only with arrays, don't they do the same thing? I keep reading the help pages for the two functions, and can't understand when should I use one over the other and why. Internet search seems to…
ZzZombo
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How to install Delphi 10.4 Sydney command line compiler (on Windows Server 2016)?

We are trying to set up 10.4 Sydney automated builds based on the Delphi command-line compiler. Our build servers are Windows Server 2016, but RAD Studio 10.4 is supported only for Windows 10 and attempts to install on Windows Server 2016 have…
R.J. Dunnill
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Clearing Dynamic FMX listview bitmaps from memory

I recently started working with dynamic listview items. It's great except for when I try to add and clear items with bitmaps. I have a listview where I add items and download the image into a memstream and assign it to the bitmap of the dynamic…
Adriaan
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Delphi FMX FormStyle StayOnTop only while app is active

Delphi 10.4 FMX desktop project I create a form and set its FormStyle to StayOnTop. The window works as expected, staying on top of other windows in the project. But when the app goes into the background, this form stays on top of all other apps.…
Mike at Bookup
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Delphi 10.4 localization issues

I'm trying Delphi 10.4. Localizing Windows applications was working like a charm in the past, but now when I dynamically load the RC DLL file, it only changes RCDATA, and not the "String Table" any more. I was using this code (as quick…
Alcor Prism
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Empty Firemonkey app crashes on startup just on Android 7.1, with error NullPointerException on String.contains(CharSequence)

I created a completely new and empty FMX app, tried it using Delphi 10.3.3 and 10.4.0 (patch 3), and when installed on Android 7.1.2 devices (tried two different ones and the official simulator VM), after the splash screen this error message…
maf-soft
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Icons on view toolbar don't respond

The icons on the View toolbar no longer work.If I click them they change color but no dialog opens, or the visibility of non-visual components doesn't switch. This is Delphi 10.4 Update 1. IIRC it did not happen with the update, but later. I tried…
Jan Doggen
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