Jacek Laskowski

See my discovery in other thread about rendering fonts...

I don't think I've written anywhere, but with me practically 99% of classes implement the interface, so there is always an interface behind the class and problems with moving methods to the beginning of the class were ALWAYS present in classes implementing the interface. Yes: I am very happy that I will enter 2021 without this frustrating affliction Happy New Year!

Unfortunately, after editing many methods, the problem appeared again, so this value has no effect 😞

Perhaps the line width is important for this problem. I had 140, now I set 80 and for now the situation has not repeated, I will test for some time, although I want 140 eventually.

@jbg

Now is okey, thanks! 🙂

I don't use Indexer on a daily basis, but I thought I would use it because I wanted to look for many things in the code quickly. I opened its window, indexed the project and started searching. But after hovering the mouse cursor over the name in the indexer window I get AV. This is related to the hint window, as shown in the log. The error is repetitive, every hovering the cursor generates AV: [5005FD90]{rtl260.bpl } System.TObject.InheritsFrom (Line 18239, "System.pas" + 6) + $0 [134F6ABF]{mmx_bds20.dll} VirtualTrees.TBaseVirtualTree.GetDisplayRect (Line 26992, "VirtualTrees.pas" + 40) + $32 [50060298]{rtl260.bpl } System.TMonitor.CheckOwningThread (Line 19020, "System.pas" + 2) + $0 [5005FDDF]{rtl260.bpl } System.TObject.Dispatch (Line 18324, "System.pas" + 11) + $0 [50D15292]{vcl260.bpl } Vcl.Controls.TControl.WndProc (Line 7420, "Vcl.Controls.pas" + 91) + $6 [0EC92198]{CnWizards_D103R.DLL} CnWizNotifier.TCnWizNotifierServices.DoMsgHook$qqrp20System.Classes.TListt1p6HWND__rx24Winapi.Messages.TMessage (Line 1948, "CnWizNotifier.pas" + 1) + $19 [0EC9224B]{CnWizards_D103R.DLL} CnWizNotifier.TCnWizNotifierServices.DoMsgHook$qqrp20System.Classes.TListt1p6HWND__rx24Winapi.Messages.TMessage (Line 1959, "CnWizNotifier.pas" + 12) + $15 [50060079]{rtl260.bpl } System.@AfterConstruction (Line 18814, "System.pas" + 2) + $5 [50060308]{rtl260.bpl } System.TMonitor.Destroy (Line 19042, "System.pas" + 0) + $0 [5005F98D]{rtl260.bpl } System.TObject.CleanupInstance (Line 17680, "System.pas" + 37) + $0 [5005A264]{rtl260.bpl } System.@FreeMem (Line 4839, "System.pas" + 20) + $0 [5005FBE2]{rtl260.bpl } System.@IsClass (Line 17942, "System.pas" + 1) + $8 [13542CDE]{mmx_bds20.dll} MMSuperHints.TMMSuperHintWindow.GetObjectHint (Line 164, "MMSuperHints.pas" + 2) + $8 [13542BAD]{mmx_bds20.dll} MMSuperHints.TMMSuperHintWindow.GetHeaderAndDetails (Line 145, "MMSuperHints.pas" + 6) + $E [0EC91F24]{CnWizards_D103R.DLL} CnWizNotifier.TCnWizNotifierServices.AppEventNotify$qqr32Cnwiznotifier.TCnWizAppEventTypepv (Line 1854, "CnWizNotifier.pas" + 16) + $15 [13542A59]{mmx_bds20.dll} MMSuperHints.TMMSuperHintWindow.CalcHintRect (Line 113, "MMSuperHints.pas" + 1) + $10 [50ECE926]{vcl260.bpl } Vcl.AppEvnts.TMultiCaster.DoShowHint (Line 600, "Vcl.AppEvnts.pas" + 9) + $3 [50E7050C]{vcl260.bpl } Vcl.Forms.TApplication.ActivateHint (Line 11796, "Vcl.Forms.pas" + 46) + $18 [50E6FF3D]{vcl260.bpl } Vcl.Forms.TApplication.HintTimerExpired (Line 11552, "Vcl.Forms.pas" + 8) + $4 [50E6C69A]{vcl260.bpl } Vcl.Forms.HintTimerProc (Line 9191, "Vcl.Forms.pas" + 3) + $5 [50E6EC33]{vcl260.bpl } Vcl.Forms.TApplication.ProcessMessage (Line 10747, "Vcl.Forms.pas" + 23) + $1 [50E6EC76]{vcl260.bpl } Vcl.Forms.TApplication.HandleMessage (Line 10777, "Vcl.Forms.pas" + 1) + $4 [50E6EFA9]{vcl260.bpl } Vcl.Forms.TApplication.Run (Line 10915, "Vcl.Forms.pas" + 26) + $3 [0051D022]{bds.exe } bds.bds (Line 214, "" + 7) + $7

Firedac datasets have the method DestDataset.CloneCursor (SrcDataset : TFDDataset...), which clones the cursor from the dataset given as a parameter. After performing this method internally both datasets have the same buffer with records. Is there any way to reverse/cancel the result of this method, i.e. break the links to the "foreign" buffer and recreate the original cursor/buffer? I mean especially TFDMemTable.

A tool to convert database files from Firebird 2.x to 3.x, in other words a database file structure converter (ODS) from version 11 to 12. An editing tool for both Windows and Linux, in the form of scripts. No need to install Firebird server! I invite you to use it. Firebird version 3 is already very mature and it is time to migrate from version 2.x 😉 https://github.com/jaclas/Firebird-ODS-11-to-12-converter

This is not the solution I am looking for, I can save and load a dataset content without such "tricks". I'm interested in ADDING a new lookup field with an ACTIVE dataset.

Is there any way to add a lookup or calculated column to an open dataset? Normally a dataset needs to be closed, but in my case I lose data (this is TFDMemTable), so I would like to add columns on the active dataset. I will add that lookup fields are not data fields and are not included in the data buffer, so there should be some way to add them.

@c0d3r I guess you write to me. Well, you're wrong. The database has declared UTF8 type for text fields. The connection is also made with the parameter UTF8.

I guess I was in too much of a hurry with this report. I guess that's because I was very annoyed by this mistake before. Now, after restarting the machine, the bug doesn't appear anymore, even though I have already entered the settings several times. If something happens, I will let you know.

FastMM in full debug mode + properly configured .inc file

Once, in Delphi 10.2, I had an identical problem, the cause of which I could not trace. The problem was that the Options window (menu Tools->Options...) was blocked by an exception. To enter Options I had to use GExperts to deactivate all the experts, restart the IDE, enter Options, set what I needed, reactivate all the experts in GExperts and restart the IDE. I did not know what caused this problem. I haven't had this problem since I migrated to Delphi 10.3... until now. I just installed the Selective Debugging expert 😞 Additionally, I see that in D10.3 this exception does not appear, as it used to, every time, but sometimes. For example, a moment ago I entered the options without any problem. ps. I'm sorry to write about it here, but I don't know where it would be better to report it.