Javier Tarí

I would just substitute the original characters for their equivalent codes, in the #99 or #$ab format

Excuse my question, but: Are you using a memory table or file based table?

Which is the latest release compatible with D2007?

 All of the following applies to VCL,; I have zero experience with FMX:

You should use OnEnter, not OnMouseEnter

If you want it work 100% also when the form is closed, I do this:

Save the form Active control value on a variable

Assign to ActiveControl another safe control (I do it eg. btnCancel.SetFocus)

Assign again to ActiveControl the control you saved

This way you are simulating the user leaving the edit box

Another way to observe a DB field changes is the TDataSource events: when your field is changed while the dataset is in dsEdit or dsInsert state, you will get a DataChange event refering to that field (and not to nil)

I'm planning to use MQTT to connect industrial devices (PLCs) to an ERP program running in Windows

Never played with that, so I hope some of you could give me any advice

The broker would be a Mosquitto

As for the Delphi side, I need something that works without troubles, so was considering purchasing the www.esegece.com components, unless suggested otherwise

Any advice would be more than welcome!

Than you in advance 

23 minutes ago, Bill Meyer said:

Not at present. I anticipate offering a PDF, but the book layout is not compatible with flowed text, so no eBook will appear.

I was just looking to purchase it as ebook; I read a lot of ebooks, but can't remember when did I read the last paper book

Btw, in Amazon Spain the book is not listed

Thanks for answering, Remy; I'm sure it's not Indy's fault, but I'm quite lost

All and every email is sent to exactly the same recipients: the email addresses are used by an automated system, always from the same "From" to the same "To", CC" and "BCC"

All the emails are sent successfully, and arrive successfully. Some of them (5%-10%) are received twice, and never more than twice

• I call TIdSMTP.Send once
• The source of the repeated emails, at least as seen on Thunderbird "source code" message option, is exactly the same, even compared with a text comparer

On the source I can see some IDs (as I said, exactly the same on both emails):

X-Cyrus-Session-Id: llcc507-a-18474-1651934775-1-2233586116162072206

ESMTP id 4KwVcR2Dvdz30vg

ESMTPS id 4KwVcQ5F2Lz3072

ESMTPA id 4KwVcQ1gtSz2t2D

I'm having a strange issue sending messages through TSMTP

The emails are sent to a fixed destination, and CC'd to the sender email

Although I only send them once from program, About 5% of them are sent twice

To increase my confussion, I've added as BCC my own email, and that email doesn't get duplicates

So I'm quite lost

Is there any library/framework out there for D2007, wich makes easier using interfaces, DI , factories or anything on that line?

I would jump on Spring4D, but some legacy issues doesn't allow me to go other Delphi versions for now

I'm using interfaces for just a couple years now, and would prefer not reinventing the wheel if possible

The installer is failing for me.

These are some details for my subscription;

This is what happens when I try to install from the web installer or the ISO installer:

Just in case, I downloaded the activation file from the licensing page:

and tried removing the license from licensing manager, and leting the installer use the new one

Result: Delphi 10.3 and 10.4 keep running with the license, but Delphi 11 won't install

Works perfect; thank you very much

Has someone tried PlasticSCM with Delphi sources? The semantic comparison seems awesome, but I wonder if someone has tried it already, and has found how good it is - or is not

Thanks in advance

14 minutes ago, Dany Marmur said:

re-writing a project using the same but newer renders a better result

If you can, sure. I work everyday on the same project, for more than 20 years, and it can't stop evolving

So no chance of rewriting projects here

1 hour ago, Dany Marmur said:

Why would a solution using MVVM/MVC be (much?) better that a solution using the DB-aware pattern?

Testing

Greater Platform independency

Long term, evolutive applications

1 hour ago, Dany Marmur said:

When MVVM becomes convoluted (due to real-world needs) then MVVM "components" are needed

Same happens with DB-aware; you just have some DBaware components

1 hour ago, mvanrijnen said:

And a framework ready to go

Very far from it; just an appetizer, an starting point to get a feeling on how MVVM could work

If you are looking for a true MVVM framework, this is not for you

7 minutes ago, Stefan Glienke said:

Best since sliced bread ... if you're not in Delphi

Could you expand that a bit? Do you mean in Delphi we don't need it? If that's what you mean, wich would be in Delphi the pattern that gives us the same as MVVM in other platforms?

On 5/13/2020 at 3:16 PM, Bernard said:

It would be great with all the record enhancements in the next version to be able to write

 

tPoint2D = record;

 

  tPolar2D = record
    Radius: Double;
    azimuth: Double;
    function ToCartesian: tPoint2D;
  end;

 

  tPoint2D = record
    x: Double;
    y: Double;
    function ToPolar: tPolar2D;
  end;

 

One possible solution could be allowing a two-phase declaration:

  tPolar2D = record
    Radius: Double;
    azimuth: Double;
  end; forward; //keyword just to say there are methods to be defined later

  tPoint2D = record
    x: Double;
    y: Double;
    function ToPolar: tPolar2D;
  end;

  tPolar2D = record finalization
    function ToCartesian: tPoint2D;
  end;

I'm deeply interested on this, and would like if anyone here is using/used homegrown MVVM implementations, and wich was/is your experience. Works fine? Is not woth the effort? Is the best since sliced bread?

Please, share your experience

Thank you!

There are no MVC or MVVM frameworks on Delphi, other than the DMVCframework, wich I believe is not thought for Windows UI apps

And anyway, that kind of frameworks are not oriented to let a form use a TDataset or a TDatasource

So IMHO, as of today, RAD and MVC/MVVM are not friends

Thank you; finally understood it

Ofcourse, it is a BPL registering the components and some property editors, all of them working

Following your advice, I've solved it this way:

var
  ModuleServices: IOTAModuleServices;
  FFormEditor: IOTAFormEditor;
  NTAFormEditor: INTAFormEditor;
  FormModule: IOTAModule;
  aFormDesigner: IDesigner;
begin
  aFormDesigner:=nil;
  ModuleServices := BorlandIDEServices as IOTAModuleServices;
  if Assigned(ModuleServices) then begin
    FormModule := ModuleServices.FindFormModule(Self.Owner.Name);
    if assigned(FormModule) then begin
      FFormEditor := FormModule.GetModuleFileEditor(FormModule.GetModuleFileCount - 1) as IOTAFormEditor;
      if Supports(FFormEditor, INTAFormEditor, NTAFormEditor) then
        aFormDesigner:=NTAFormEditor.GetFormDesigner;
    end;
  end;
  //Now you just select the column, i.e.:
  if Assigned(aFormDesigner) then
    aFormDesigner.SelectComponent(Column(ACol))
end;

Next one also works, but I'm not sure if it should work, so will keep the first one

var
  aFormDesigner: IDesigner;
  aForm: TCustomForm;
begin
  AForm:=GetParentForm(Self);
  If not Supports(aForm.Designer,IDesigner,aFormDesigner) Then
    aFormDesigner:=nil;
  if Assigned(aFormDesigner) then begin
    aFormDesigner.SelectComponent(Column(ACol));
end;

1 hour ago, David Hoyle said:

I'm not sure I understand correctly what you are trying to do here but the Open Tools API can provide you access to the IDesigner from INTAFormEditor.GetFormDesigner. You can get the INTAFormEditor by querying the IOTAModule interface for the form.

Don't thik I understood you.. Do you mean something as this?

((Form as IOTAmodule) as INTAFormEditor).GetFormDesigner

Short: At design time, How can I get the IDesigner interface for a given form?

Long:

I have a VCL DBGrid-kind component developed for D5 and working fine all the way up to D10.4.1, except for one thing

At design time, when I clic on a column header, it should select on the Object Inspector the TCollectionItem descendant for that column

In D5, it was as easy as finding the form owning the DBGrid-kind, and then using FDesigner.SelectComponent(TheColumn);

But now the form has IDesigner: IDesignFormHook, so I don't know how to do a SelectComponent

Thanks in advance

If it is not supported, it should throw an exception. Is the query sorted with an order by?

Unless you really need Enterprise, I would go with UniDac

If you decide to go with UniDAC, consider making wrapper components wich, depending on a $DEFINE, would inherit from FireDAC or from UniDAC, and then substitute all your current FD components with those

That way, your app will always be ready for both FD and UD. So if you later decide to go with Enterprise and come back to FireDAC, you would not need to change a single line of code on your sources

That's pretty much my line of work right now

This surprised me a lot, and I believe (hope!) is a very good sign:

"Recently we launched a new experiment of opening up some internal projects for MVPs to work on. As opposed to some of our open-source initiatives like Bold, these are still owned by Embarcadero and a primary part of the product."

https://blogs.embarcadero.com/update-xml-mapper/