Archive for the ‘Delphi XE8’ Category
Posted by jpluimers on 2017/11/30
Note that the below solution works for any project raising the W1029 warning (not just from projects using Delphi Mocks) like
[dcc32 Warning] W1029 Duplicate constructor 'ClassName.ConstructorName' with identical parameters will be inacessible from C++
From my original text at [WayBack] Get rid of W1029 warning in Delphi compile mode · Issue #106 · VSoftTechnologies/Delphi-Mocks · GitHub:
By default the compiler will emit warnings like these for projects when using either of the Delphi.Mocks.Behavior or Delphi.Mocks.Expectation directly or indirectly:
[dcc32 Warning] W1029 Duplicate constructor 'TExpectation.CreateOnceWhen' with identical parameters will be inacessible from C++
They’re harmless as DUnitX doesn’t support C++. This particular warning type cannot be disabled on the unit or source line level which means you have to disable it on the project level by either:
- adding
{$WARN DUPLICATE_CTOR_DTOR OFF} anywhere to your .dpr project file
- modifying the the Project Options for your project (easiest is in the
All configurations - All platforms target):
- follow the path
Delphi Compiler, Hints and Warnings in the treeview on the left
- expand the
Output warnings node in the listview on the right
- set
Duplicate constructor/destructor with identical parameters will be inacessible from C++ to Error
A screenshot of the second option is below.
Note that the spelling mistake in Duplicate constructor/destructor with identical parameters will be inacessible from C++ is how it is in the IDE, but that as Google search string it will give limited results, so here are some back-ground references:
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Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2017/10/19
A long time ago, Pablo Vizcay a.k.a. [WayBack] pragmatic_programmer wrote some cool code at [WayBack] delphi – VCL events with anonymous methods – what do you think about this implementation? – Stack Overflow.
I still think it’s a very neat solution to bind method references to events.
type
TNotifyEventDispatcher = class(TComponent)
protected
FClosure: TProc<TObject>;
procedure OnNotifyEvent(Sender: TObject);
public
class function Create(Owner: TComponent; Closure: TProc<TObject>): TNotifyEvent; overload;
function Attach(Closure: TProc<TObject>): TNotifyEvent;
end;
implementation
class function TNotifyEventDispatcher.Create(Owner: TComponent; Closure: TProc<TObject>): TNotifyEvent;
begin
Result := TNotifyEventDispatcher.Create(Owner).Attach(Closure)
end;
function TNotifyEventDispatcher.Attach(Closure: TProc<TObject>): TNotifyEvent;
begin
FClosure := Closure;
Result := Self.OnNotifyEvent
end;
procedure TNotifyEventDispatcher.OnNotifyEvent(Sender: TObject);
begin
if Assigned(FClosure) then
FClosure(Sender)
end;
end.
And this is how it’s used for example:
procedure TForm1.FormCreate(Sender: TObject);
begin
Button1.OnClick := TNotifyEventDispatcher.Create(Self,
procedure (Sender: TObject)
begin
Self.Caption := 'DONE!'
end)
end;
–jeroen
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 1 Comment »
Posted by jpluimers on 2017/10/12
I mentioned Asbjørn Heid on wiert.me before. While prepping for the Deadlock Empire workshop at EKON20, I needed a Delphi equivalent for the .NET [Way: Barrier Class (System.Threading)
The game uses that in level deadlockempire.github.io/#H4-Barrier [WayBack].
Edwin van der Kraan found the ThreadBarrier/ThreadBarrier.pas at master · lordcrc/ThreadBarrier implementation via [WayBack] Is there a way to create memory barriers in Delphi? Something like .NET’s System.Threading.Barrier class, java.util.concurrent.CyclicBarrier… – Horácio Filho – Google+
It’s from Asbjoørn who is known as lordcrc on GitHub. Cool stuff!
So yes, there is a Delphi version of If you thought you could do multi-threading, then play “The Deadlock Empire” games. You can find it at https://deadlockempire.4delphi.com/ There are two deadlockempire implementations there:
The workshop was great fun!
This is about a web game focussing on the concurrency issues in multi-threading environments. By the conference there will be a Delphi version of it. At the workshop we will play each round interactively: all attendees play the round followed by a short discussion. This is about collective learning, so the speakers will probably learn… Read More
Source: [Archive.is] If you thought you could do multi-threading, then play “The Deadlock Empire” games – Entwickler Konferenz
–jeroen
Posted in .NET, C#, Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 1 Comment »
Posted by jpluimers on 2017/10/10
Given a variable I: Integer, some people like Inc(I); others like I := I + 1;.
You might think that part of that discussion nowadays should be multithreading.
In practice this does not matter: the compiler will use the same instructions for both statements.
TL;DR: This might make you think they are always atomic. But that’s not always true, as the below differences show. In addition, it can also depend on your processor archicture.
In the Win32 Delphi Compiler, this is how they look:
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Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 5 Comments »
Posted by jpluimers on 2017/08/31
If you want to set all columns to the same value, select all columns in the structure view and then (assuming SizeStyle [WayBack] is already set to ssPercent [WayBack]) set the Value [WayBack] to 0. This will trigger some automatism that makes all of the columns sized equal.
Great answer by Uwe Raabe [WayBack]
Source: Delphi How to use TGridPanel – Stack Overflow [WayBack]
–jeroen
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2017/08/09
I just tried to quit Delphi when Refactor Rename screwed up again:
—jeroen
Posted in Delphi, Delphi XE8, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2017/08/08
Thanks Stefan Glienke for posting this a while ago:
If you ever wonder why you get no (or incomplete) RTTI from a control that you inherited from a DevExpress one – then look into cxVer.inc where it has the following lines:
{$IFNDEF CXTEST}
{$WEAKLINKRTTI ON}
{$RTTI EXPLICIT METHODS([]) FIELDS([]) PROPERTIES([])}
{$ENDIF}
+Martin Wienold was wondering (and so was I at first) why he could not properly resolve a form from the DI container that inherited from TdxRibbonForm despite writing a public method with [Inject] attribute on it but it was never called.
Warning: If you are using DevExpress or any other source code that does this (changing the $RTTI directive) and build these sources together with your application (in contrast to using precompiled dcus or even packages) on a version <XE6 then you might suffer from this issue: [WayBack] #79943: {$ RTTI} flag scope which causes RTTI to disappear even from units that did not have the $RTTI in them.
Source: If you ever wonder why you get no (or incomplete) RTTI from a control that you…
–jeroen
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 2009, Delphi 2010, Delphi x64, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, QC, Software Development | Leave a Comment »
Posted by jpluimers on 2017/06/21
A while ago, I had to fix some stuff in an application that would write – using a binary mechanism – UTF-8 and UTF-16 strings (part of it XML in various flavours) to the same byte stream without converting between the two encodings.
Some links that helped me investigate what was wrong, choose what encoding to use for storage and fix it:
–jeroen
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi XE8, Development, Encoding, Software Development, UTF-16, UTF-8, UTF16, UTF8, XML, XML/XSD | 3 Comments »
Posted by jpluimers on 2017/05/30
Since Google has a hard time searching G+: [WayBack] Anyone ever encountered a “[dcc32 Fatal Error] F2084 Internal Error: DBG3133″… – G+ – Jeroen Wiert Pluimers:
Anyone ever encountered a [dcc32 Fatal Error] F2084 Internal Error: DBG3133 in XE8 or newer?
I get it in XE8 version 22.0.19908.869 intermittently on a huge* project when compiling or building.
If it occurs, I have to:
- restart the IDE
- delete all DCU files
- build
Without deleting the DCU files, even a build throws the error after restarting the IDE.
The project never throws an AV while compiling as described in [WayBack] QC #127380: F2084 Internal error AV0B8A47D2-R3E1D3CF8-0 when compiling project unless the IDE runs out of memory (which I now resolved with DDevExtensions).
Every now and then on compile it also throws [dcc32 Fatal Error] F2084 Internal Error: MA1243.
For the other error, the same solution applies: if you don’t, then the next one is a [dcc32 Fatal Error] F2084 Internal Error: DBG3133.
Both errors occur during the Linking stage.
–jeroen
*huge as in that I needed DDevExtensions to work around [WayBack] Is there any tool that clears the Delphi memory overhead when a “build all” switches to the next project in a project group? XE8 constantly runs out of memory… – Jeroen Wiert Pluimers – Google+
Posted in Delphi, Delphi XE8, Development, F2084, QC, Software Development | Leave a Comment »
Posted by jpluimers on 2017/05/17
Brilliant:
if it is a console program and it was started any other way (from the Windows Explorer, from the Delphi IDE with or without debugger, from another non-console program), then, before the console window can close, it will display:
Press any key...
Source: Delphi Corner Weblog: New: Velthuis.AutoConsole unit [WayBack]
via:
–jeroen
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, FastMM, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 