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Questions tagged [jvcl]

JEDI Visual Components Library (jvcl) is a collection of visual and non-visual components for Delphi, Kylix and C++ Builder. The code is donated from the JEDI community and licensed under the terms of Mozilla Public License (MPL).

JEDI Visual Components Library (jvcl) is a collection of visual and non-visual components for Delphi, Kylix and C++ Builder. The code is donated from the JEDI community and licensed under the terms of Mozilla Public License (MPL).

Link to jvcl homepage

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Using JvEdit with JvDataSource raises Access Violation

I'm trying to use JvEdit and JvDataSource instead of DBEdit and DataSource. But at design time, whenever I open a form with a JvEdit on it, I get this error: Access violation at address xxxxxxxx in module 'dbrtl160.bpl. Read of address 00000000.…
iMan Biglari
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F2051 Unit JclUnitVersioning was compiled with a different version of System.Contnrs.TObjectList.Remove

I'm migrating a Delphi 2 project to RAD Studio XE2. When I try to compile I get [DCC Fatal Error] MyUnit.pas(9): F2051 Unit JclUnitVersioning was compiled with a different version of System.Contnrs.TObjectList.Remove at the following row: unit…
bluish
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How to add gif and tiff support to TJvDBImage?

TJvDBImage is a good component that support several picture formats. In JvJVCLUtils, it mentioned that the supported format can be expanded by RegisterGraphicSignature procedure. In the comment it mentioned : WHAT IT IS: These are helper…
Justmade
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Is there a way to drop down a TJvComboEdit's AutoComplete list when the button is pressed?

I have got a form with a TJvComboEdit control (from Jedi Visual Components library, jvcl) on it. This control has got an AutoCompleteList and if I set AutoCompleteOptions to acoUpDownKeyDropsList I can at runtime show this list by pressing the up or…
dummzeuch
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Procedure Entry Point invalid in JVCL (jclUnitVersioning)

I've just installed XE2 together with Jedi 3.45. this appears to have broken my Delphi 7 installation! I have uninstalled XE2 and Jedi, I have cleaned up and removed all invalid paths bpl, dcu and source. However when I reinstall Jedi 3.4x I get a…
Paul
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JEDI JVCL TJvProgramVersionCheck How to use HTTP

I'm wondering if someone has an example on how can be used the TJvProgramVersionCheck component performing the check via HTTP. The example in the JVCL examples dir doesn't show how to use HTTP thank you
Fabio Vitale
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Sporadic Access Violation in TJvMemoryData.InternalSetFieldData

I am trying to resolve an access violation in a Delphi XE7 application which is occurs in this code, which is part of the Jedi VCL JvMemoryDataset component (current source at Github): begin Data^ := Ord(Buffer <> nil); Inc(Data); if Buffer <>…
mjn
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Making TJvAppDBStorage work with FireDAC/Firebird

Using either Delphi 10.2 or 10.3, FireDAC and either Firebird 2.5 or 3.0: I've used the JVCL TJvAppStorage components for years and never had a problem with them, either to INI/XML storage or to a table in an AbsoluteDB database. I'm trying to…
Steve Sneed
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Invalid variant operation error when trying to store Integer in TJvFormStorage

In a VCL application in Delphi 10.1.2, I use a TJvFormStorage component to persistently store and restore data. So in JvFormStorage1 at design-time I have created a StoredValue to hold an Integer value: Then at runtime, I try to assign an Integer…
user1580348
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How to install rxLib component in Delphi xe5?

I found a couple of downloads for rxLib component of Delphi xe5 but not a clear instruction on how to install it.
Ifeanyi
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Using Double buffer with VCL controls

My Application have many graphics and visual components... So i switched on doublebufferd = true in each and every components as possible. later i wanted to use a panel in order to hold some components( it makes alignment easy) but at the same time…
Vibeeshan Mahadeva
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delphi JvPasswordForm1

hello experts I had an old JVC components with JvPasswordForm1. It seems this component does not exist any more: what component is it replaced by ? reagrds
yarek
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Manual install of JCL/JVCL in Delphi 10.1 Berlin

I haven't upgraded Delphi since 2007. I have an evaluation copy of 10.1 Berlin installed, good for another 15 days. I want to see how difficult it will be to update a project I have to 10.1 before buying. I've heard that in 10.0 Seattle, you could…
user3681853
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Using JVCL's debug DCUs with C++Builder

How do I debug JVCL code using C++Builder? I enabled building debug DCUs when I installed JVCL, I turned on "use debug DCUs" under my project's Delphi settings (there doesn't appear to be an analogous option under C++ settings), and I disabled…
Josh Kelley
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How to change URL color in TJvRichEdit?

In TJvRichEdit Version 3.48 (from JVCL) there is an AutoURLDetect property: The URLs have a dark blue color which makes them difficult to read on a dark background: I use TJvRichEdit in a VCL Form application in Delphi XE8. So how can I change the…
user1580348
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