shineworld

Could be the server is below DDoS...
Many forums are in same state, also our:

In my case, massive guest access to the pages, till 150000 for day, continuously increases the session table and session keys in the server database,

which slows down more and more every day, paralyzing the forum.

At the moment, the only solution I have is to periodically clean up the two tables, but this also disconnects all connected users...

I hope this is not the problem in this forum.

Personally, I don't mind paying for a product like Delphi.

I always hate having to wait months for updates before a product is truly usable and seeing major bugs that carry over from version to version without being fixed with updates.

Every transition from version k-1 to k is a huge time investment, and the libraries I use aren't always so quick to provide updates, but I think that's common.

I've also used .NET, of course, but things change even faster there, and products developed years ago are a huge headache to update to the current framework.

Delphi already has many open libraries, under various licenses, so I don't feel the need to have an open environment as well.
No one would touch it, and if they did, in my opinion, it would do more harm than good.

To support the IDE, I use many plugins that already do a lot of good things (I have often wondered why they have never become an integral part of the IDE,
o name a few: GXEperts' Grep or DDevExtesnions' multi-project Version Info management).
 

The fact remains that I bring code into projects, even complex code from 20 years ago, and it works smoothly, or with minimal issues. No time is wasted.

Creating installation packages is fast, as millions of lines of code can be reduced to little more than an exe file:

Compilation is so fast that in just a few minutes I have everything I need to test and release the product.
 

I've been using Delphi since it came out, although I stuck with certain versions for a long time, even though I always had them all, for reasons of stability between the various versions. Now I'm happy with 12.3, even though it drives me crazy with refactoring, an indispensable feature when you have really large projects like mine. I installed 13 on a VM, but when I realized that even that minimal refactoring had been removed, I left it there waiting for something to be done.

Could UIAutomation increase the possibility of malicious software interfacing more easily with an application to cause problems?

Antialiased polyline is very simple to do with Image32 library:

uses
  Img32,
  Img32.Draw,
  Img32.Vector;

...

Procedure TTagComponent.Paint;
var
  W: Integer;
  H: Integer;
  Path: TPathD;
  Img: TImage32;
  PenWidth: Integer;
  PenColor: TColor32;
  BrushColor: TColor32;
  textrect: TRect;
  s: String;
const
  BORDER = 4;
  SPINER = BORDER + 8;
  TEXT_H_OFFSET = SPINER + 3;
  TEXT_V_OFFSET = BORDER + 3;
begin
  W := Self.ClientWidth;
  H := Self.ClientHeight;
  Img := TImage32.Create(W, H);
  try
    BrushColor := Color32(TStyleManager.ActiveStyle.GetStyleColor(scEdit));

    If _drawactive Then
    Begin
      PenColor := Color32(TStyleManager.ActiveStyle.GetStyleFontColor(sfWindowTextDisabled));
      PenWidth := 2;
    End
    Else
    Begin
      PenColor := Color32(TStyleManager.ActiveStyle.GetStyleColor(scBorder));
      PenWidth := 1;
    End;

    Img.Clear(BrushColor);

    Path := MakePath
    (
      [
        BORDER, BORDER,
        Self.ClientWidth - SPINER, BORDER,
        Self.ClientWidth - BORDER, Self.ClientHeight div 2,
        Self.ClientWidth - SPINER, Self.ClientHeight - BORDER,
        BORDER, Self.ClientHeight - BORDER,
        SPINER, Self.ClientHeight div 2
      ]
    );
    DrawPolygon(Img, Path, frEvenOdd, BrushColor);
    DrawLine(Img, Path, PenWidth, PenColor, esPolygon);

    Img.CopyToDc(Self.Canvas.Handle, 0, 0, False);

    textrect := TRect.Create(TEXT_H_OFFSET, TEXT_V_OFFSET, W - TEXT_H_OFFSET, H - TEXT_V_OFFSET);
    s := Trim(Self.Caption);

    Self.Canvas.Font.Assign(Self.Font);
    Self.Canvas.Font.Color := TStyleManager.ActiveStyle.GetStyleFontColor(sfWindowTextNormal);
    Self.Canvas.TextRect(textrect, s, [tfSingleLine, tfVerticalCenter, tfCenter, tfEndEllipsis]);

  finally
    Img.Free;
  end;
end;

sample.7z

You can think to use Image32 https://github.com/AngusJohnson/Image32 or Graphics32 to create antialiased things.

3 hours ago, Uwe Raabe said:

GetIt only installs in the current IDE. Not in any other registry node nor in the 64-bit one.

 

Nevertheless, the packages exist and you can simply add them via Components - Install packages.

Manually installed and works fine.
Thanks.

I've removed 7 and installed 8 too.
No 64-bit design time packages are availables.

In a Python program, with DelphiVCL, I'm trying to use the TreeNode.Data field to contain extra node infos.

        def add_node_recursive(treeview: TreeView, parent_node: TreeNode, data: dict):
            axis_label = ''
            axis_id = data['id']
            if axis_id in ['X', 'Y', 'Z', 'A', 'B', 'C']:
                axis_label = f'{axis_id}-axis'
            elif axis_id == 'TP':
                axis_label = f'Toolpath'
            elif axis_id == 'MCS':
                axis_label = f'Machine Zero Point'
            else:
                axis_label = f'{axis_id}'
            axis_node = treeview.Items.AddChild(parent_node, axis_label)
            print(type(axis_node))
            print(type(axis_node.Data))

            
[Dbg]>> print(type(axis_node))
<class 'TreeNode'>
[Dbg]>> print(type(axis_node.Data)) 
<class 'NoneType'>
[Dbg]>>> dir(axis_node)
['AbsoluteIndex', 'AfterConstruction', 'AlphaSort', 'Assign', 'BeforeDestruction', 'CPP_ABI_1', 'CPP_ABI_2', 'CPP_ABI_3', 'CheckState', 'Checked', 'ClassInfo', 'ClassName', 'ClassNameIs', 'ClassParent', 'ClassType', 'CleanupInstance', 'Collapse', 'Count', 'Create', 'CustomSort', 'Cut', 'Data', 'DefaultHandler', 'Delete', 'DeleteChildren', 'Deleting', 'Destroy', 'Dispatch', 'DisplayRect', 'DisposeOf', 'DropHighlighted', 'DropTarget', 'EditText', 'Enabled', 'EndEdit', 'Equals', 'Expand', 'Expanded', 'ExpandedImageIndex', 'FieldAddress', 'Focused', 'Free', 'FreeInstance', 'GetHandle', 'GetHashCode', 'GetInterface', 'GetInterfaceEntry', 'GetInterfaceTable', 'GetLastChild', 'GetNamePath', 'GetNext', 'GetNextChild', 'GetNextVisible', 'GetPrev', 'GetPrevChild', 'GetPrevVisible', 'Handle', 'HasAsParent', 'HasChildren', 'ImageIndex', 'Index', 'IndexOf', 'InheritsFrom', 'InitInstance', 'InstanceSize', 'IsFirstNode', 'IsVisible', 'Item', 'ItemId', 'Level', 'MakeVisible', 'MethodAddress', 'MethodName', 'MoveTo', 'NewInstance', 'OverlayIndex', 'Owner', 'Parent', 'QualifiedClassName', 'SafeCallException', 'Selected', 'SelectedIndex', 'SetProps', 'StateIndex', 'Text', 'ToList', 'ToString', 'ToTuple', 'TreeView', 'UnitName', 'UnitScope', '__bound__', '__class__', '__delattr__', '__delitem__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__getstate__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__ne__', '__new__', '__owned__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', 'getFirstChild', 'getNextSibling', 'getPrevSibling']

Initially node Data is set to NoneType but If I try to assign something I get:
 

AttributeError: Error in setting property Data
Error: Expected a PPyObject

An user wrote me "AllowCollapse.Value = False" instead of "AllowCollapse = False"....
Work!
Thank you

I'm using TreeView and I'm trying to disable the node collapsing with event OnCollapsing(Sender, Node, AllowCollapse).

The Python method is called when a TreeView node is clicked for collapse:

    def TreeViewCollapsing(self, Sender, Node, AllowCollapse):
        AllowCollapse = False

In the event I've set AllowCollapse to False, but in engine code the AllowCollapse := PyObject_IsTrue(LVarParam.Value) = 1; returns True:

procedure TTVCollapsingEventHandler.DoEvent(Sender: TObject; Node: TTreeNode;
  var AllowCollapse: Boolean);
var
  LPyObject, LPyNode, LPyTuple, LPyResult, LPyAllowCollapse: PPyObject;
  LVarParam: TPyDelphiVarParameter;
begin
  Assert(Assigned(PyDelphiWrapper));
  if Assigned(Callable) and PythonOK() then
    with GetPythonEngine() do begin
      LPyObject := PyDelphiWrapper.Wrap(Sender);
      LPyNode := PyDelphiWrapper.Wrap(Node);
      LPyAllowCollapse := CreateVarParam(PyDelphiWrapper, AllowCollapse);
      LVarParam := PythonToDelphi(LPyAllowCollapse) as TPyDelphiVarParameter;
      LPyTuple := PyTuple_New(3);
      PyTuple_SetItem(LPyTuple, 0, LPyObject);
      PyTuple_SetItem(LPyTuple, 1, LPyNode);
      PyTuple_SetItem(LPyTuple, 2, LPyAllowCollapse);
      try
        LPyResult := PyObject_CallObject(Callable, LPyTuple);
        if Assigned(LPyResult) then begin
          Py_DECREF(LPyResult);
          AllowCollapse := PyObject_IsTrue(LVarParam.Value) = 1;
        end;
      finally
        Py_DECREF(LPyTuple);
      end;
      CheckError();
    end;
end;

Grazie !

Python + DelphiVCL + VTK + VCL Styles, a great combo!
A sample video of a Python program that I use to fastly check the new kinematics algorithms.

I have always used and will always continue to use Delphi, as long as I am allowed in the company.

Other languages and IDE environments have been added but it will be out of affection, I find the Delphi one very friendly, complex to the point and with things that are really needed.

Of course, this depends a lot on the scope of the software, but in mine it is perfectly apt, where other environments become scattershot (too many things and not congruent with each other).

What I admire about the Delphi RAD developers is their dedication.

It has been dozens of years, that despite the fact that for many it is an outdated environment and language that they are dedicated to keeping it active, to meet new needs, limited as they all are by budget problems.

But Delphi is still alive, and I easily shame the final products made by other colleagues with “newer” environments.

Like everyone I would like to have more and more, and think that every problem it has can be magically solved in a short time, but you know, that is not the case for any of us who develop code for a living.

You always look for a compromise between investment availability and goals to be achieved.

Me too.

However all worked fine. 

Import and ability to use common C++ DLL files (eg: OpenCV, VTK, OpenCascade, etc).
Actually I use Python4Delphi to get access to some features of these DLL but it is just a workaround.

Actually I've installaed Eclipse Temurin JDK with Hostspot 17.0.9+9 (x64) and shoud go fine ?
PS: I'm used with RAD ISO which does not install JDK so it's necessary to be in the OS before to start.
I don't know if web install does things to install also required JDK.

I'm approaching to install and try Delphi 12.3 in a clean VM.
What is the "Eclipse Temurin JDK with Hotspot" version required to be installed before to start Delphi RAD package to enable Android development ?

Mmmm,
I've tried a simple console program in Athens 12:
 

program Project4;

{$APPTYPE CONSOLE}

{$R *.res}

uses
  System.SysUtils,
  System.DateUtils,
  Winapi.Windows;

var
  I: Integer;
  T1: Int64;
  T2: Int64;
  TD: Double;
  D1: TDateTime;
  D2: TDateTime;
  DiffMs: Int64;
  Frequency: Int64;

function Delay: Integer;
var
  I: Integer;
begin
  Result := 0;
  for I := 0 to 1000000 do
    Inc(Result);
end;

begin
  FormatSettings.DecimalSeparator := '.';
  FormatSettings.ThousandSeparator := ',';
  try
    QueryPerformanceFrequency(Frequency);

    D1 := Now();
    QueryPerformanceCounter(T1);
    Delay;
    D2 := Now();
    QueryPerformanceCounter(T2);

    TD := (T2 - T1) * 1000 / Frequency;
    DiffMs := MilliSecondsBetween(D2, D1);
    Writeln(Format('Now() delta            = %d ms', [DiffMs]));
    Writeln(Format('QueryPerformance delta = %f ms', [TD]));


  except
    on E: Exception do
      Writeln(E.ClassName, ': ', E.Message);
  end;
end.

Result:

Now() delta            = 2 ms
QueryPerformance delta = 2.15 ms

The Delay is empirical, necessary just to have a little delay.
Now() seems to capture 2ms of delta.

Increasing delay of 10:

Now() delta            = 17 ms
QueryPerformance delta = 16.42 ms

I don't know why they report 1 sec of precision in the documentation, but if it can be so, is terribile, because my OPC UA server timings are based on TDateTime and 1ms of resolutions is already 10 time bigger than OPC-UA tick of 100ns.

I work only on Windows but to get precise timings (below 1ms of accuracy) I use QueryPerformanceFrequency() and QueryPerformanceCounter().
In case precise timings are not available I switch to timeGetTime()

A messy unit is in attachment.

PS:
You can improve Windwos timeGetTime, gettickcount and sleep (DELPHI IDE does that) with:

program XXX;

uses
  System.SysUtils,
  Winapi.MMSystem,
  ...;

{$R *.res}

var
  TimeCaps: TTimeCaps;
  NeedToChangeTimerPrecsion: Boolean;

begin
  // starts high precision timer
  if timeGetDevCaps(@TimeCaps, SizeOf(TTimeCaps)) = TIMERR_NOERROR then
    NeedToChangeTimerPrecsion := timeBeginPeriod(TimeCaps.wPeriodMin) = TIMERR_NOERROR
  else
    NeedToChangeTimerPrecsion := False;

  // initializes and runs application
  Application.Initialize;
  ...;
  Application.Run;

  // stops high precision timer
  if NeedToChangeTimerPrecsion then
    timeEndPeriod(TimeCaps.wPeriodMin);
end.

osTimeUtils.pas

Delphi 12.3 presentation is cooming 🙂

I use UPX by decade without any issue also with Virustotal and installed BitDefender. I guess it expand program in RAM.
My 38.681.088 byte exe are compressed with LZMA to 10.189.312 byte with "upx-4.2.2.exe --best --lzma normal-version.exe upx-version.exe"

There are other projects, eg: Chandra, Infero, jetLua, LMEngine, etc which are disapeared from git...

Are become obsolete and replaced by some newone ?

Currently, working is only TLS 1.2, but there is a git to add TLS 1.3 ( https://github.com/JPeterMugaas/TaurusTLS.git )
I've downloaded and checket it but I haven't yet need time to try to extract sources use it...

I try then from some weeks (I'm in releasing of current software version).

11 hours ago, DelphiUdIT said:

The bundle compiled files (Bpl, Dcu, etc ...) are in the same paths of delphi system libraries, I think you must move them from there. So you must maintain them and the github version switching the windows registry.

I think that @shineworld has done those steps.

I've downloaded (cloned) Indy repository from github (https://github.com/IndySockets/Indy.git).
Manually copied needed file in a source folder of my project.
Added that folder in the project search path.
Created the class only with code (no IDE objects placement) so I use only custom sources for Indy.

This permitted me to add changes and work with latest git repository code, without remove native Indy tools from IDE.