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Questions tagged [delphi-10.3-rio]

Delphi 10.3 Rio is a specific version of Delphi released in November 2018.

Delphi 10.3 Rio supports development of applications covering 32-bit and 64-bit, 32-bit, 32-bit and 64-bit, 32-bit, and server 64-bit. Windows applications may be built using either the framework or the (FMX) framework, whereas the OSX and mobile platforms are built under the FireMonkey framework only.

This version of Delphi brings several enhancements to the core Delphi pascal language, including inline variable declarations and type inference, as well as RTL performance improvements, and changes to Delphi's ABIs for better C++ interoperability across all platforms. It also sports several IDE UI redesigns, better High-DPI support to the VCL, support for iOS 12 and Android API level 26+, and begins Embarcadero's push to phase out its ARC memory management model for TObject classes, starting with the Linux 64-bit compiler.

Always use the tag alongside this tag.

References

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Rectangle drawn always is erased when the next is created

In the code below I would like the previously drawn rectangle to not be erased when the next rectangle is drawn. How achieve this? type TForm1 = class(TForm) procedure FormMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X,…
FLASHCODER
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Problem with constant dynamic array of classes

I'm trying to use a constant dynamic array of TClass but the stored values are not valid. When I use a constant static array[0..xx] of TClass, this is correctly working. Here is a sample code : const _CtrlClasses : array[0..2] of TClass …
Mouscap
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How to search a FMX.TListView header as well as items

I have a LiveBindings databound FMX.TListView with the FieldName being Stage and the FillHeaderFieldName being Production. When the app is running, I see a list of Productions using the HeaderAppearance, and within each Production, there is a list…
SiBrit
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Writing to an external SD card in Delphi 10.3 Rio

I have written a photo application that streams images from an external source to my app on a tablet (Samsung Galaxy TAB S). I have decided to use the external SD card in the tablet as storage, as the internal storage often runs out of space. Plus,…
Alex Plasma
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How send webcam images through socket without need save to file?

Actually i have this code below that is working fine to send webcam images over socket (ClientSocket > ServerSocket), before send, i'm saving the image to file . Then i want know if exists some solution to insert the capture inside of MemoryStream…
FLASHCODER
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How to view Apple Notarize logs for Delphi app

My Delphi 10.3.2 app is failing Apple's notarization. I've been able to get another different app to notarize successfully. How do I view the log file that contains the results of the failed notarization? (Xcode's instructions are no help as Xcode…
Mike at Bookup
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Is there a way to make Delphi's FireDAC recognize PostgreSQL positional parameters that FireDAC generated?

I am executing queries with named parameters from FireDAC to PostgreSQL 11 using the native FireDAC Postgres driver. During the prepare statement FireDAC converts the named parameters to positional parameters, which is correct. However, if I then…
Cary Jensen
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Changing caption of form changes color of System bar Caption Background?

on some button click i am setting the Caption of form to a filename like this: var FileName: String; .... procedure TForm1.Button1Click(Sender: TObjecT); begin Caption:= FileName; end; I am using FMXStyle Coral Dark. This is the Image:
Andrew
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Using Named Pipes to communicate from Windows Service to GUI Frontend in Delphi

I'm using Russell Libby's Pipes.PAS unit to facilitate communicating between two programs using named pipes. I have made a working example using one server (VCL program with GUI) and one client (also VCL) that can be started multiple times, and I…
HeartWare
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Delphi FMX Verify if EditText contains Numbers Only?

I need to use different procedure depending on the Edittext.text i need to call ProcessA(value: string); with Parameters of last 4 Char of string if Edittext.text's first 4 char are string and next 4 are number. and Call ProcessB(value:integer) with…
Rohn
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JSON to XML using XSLT 3.0 - how to load JSON source and call json-to-xml function?

I want to experiment (in Delphi code) with the XSLT 3.0 and its json-to-xml() function: In XSLT 3.0, an inbound document can be in JSON, rather than XML. The processor can take that document, use the json-to-xml() function to convert it into a…
Jan Doggen
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Delphi 10.x "Cannot resolve unit name" for newly installed library

I encountered the following puzzling situation while installing a third-party library, in this case Virtual Treeview, which I will use as an example herein. After following the installation procedure from INSTALL.txt, the new components appeared in…
gwideman
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Datasnap in 10.3 Rio incompatible with previous versions

We have a problem with Datasnap RESTfull, it seem to have an incompatibility between 10.3 Rio and 10.2 Tokyo (and all bellow) about Datasnap RESTfull function implementation. The problem: We have a server, builded with 10.2 currently running and…
Alain V
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Basic authentication with HTTPRIO in Delphi 10.3

There has been a change to the HTTPRIO.HTTPWebNode.OnBeforePost event in Delphi 10.3. Before Delphi 10.3, the event handler was defined this way, and it worked perfectly: procedure TForm1.HTTPRIO1HTTPWebNode1BeforePost(const HTTPReqResp:…
ramses
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Custom child component created by host component is not autonamed by designer

I have created a PageControl like component derived from Tcustomcontrol which hosts child tabsheets derived from TcustomPanel. The Tabsheets are created by the host pagecontrol via a newpage method or by creating a new tabsheet and setting its…
Andy k
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