aehimself

If you create a StringStream from an input string, it uses TEncoding.Default. What if you override this by TStringStream.Create(Json, TEncoding.UTF8, False); ?

Let's say you have a TJSONObject variable which holds the inmost object only (id and name) named innerjson: if innerjson.GetValue('id') <> null then fid := (innerjson.GetValue('id') As TJSONNumber).AsLargeInt; if innerjson.GetValue('name') <> null then fname := (innerjson.GetValue('name') As TJSONString).Value; if you are sure that these will always be present, you can discard the nullcheck.

I really do suspect that this is a bug. The color of uncolored text is clWindowText, it's just RichEdit is rendering it in a wrong color. I'm not good with StyleHooks to actually fix it... I did find a workaround and however it works, it's painfully slow: TMyRichEdit = Class(Vcl.ComCtrls.TRichEdit) strict private Procedure StreamIn(Var Msg: TMessage); Message EM_STREAMIN; End; Procedure TMyRichEdit.StreamIn(Var Msg: TMessage); Var a: Integer; Begin inherited; Self.LockDrawing; Try Self.SelStart := Integer.MaxValue; For a := 0 To Self.SelStart Do Begin Self.SelStart := a; If Self.SelStart <> a Then Continue; Self.SelLength := 1; If Self.SelAttributes.Color = clWindowtext Then Self.SelAttributes.Color := TStyleManager.ActiveStyle.GetStyleFontColor(sfEditBoxTextNormal); End; Self.SelStart := 0; Finally Self.UnlockDrawing; End; End; The amount of .SelStart is causing the slowdown. Does anyone know how I can extract the start and end of consecutive blocks, where all formatting is the same? That should speed things up a LOT. I'll look into how exactly RichEdit is setting the properties of SelAttributes - maybe I can extract the attribute at a specific location without having to move the cursor, that way the only SelStart - SelLength would be at blocks what I actually have to change.

The name is a little bit confusing: StyledSomething might make people think it's associated with VCL styles.

That makes a lot of sense, thanks for pointing it out! As it caused no issues until now I didn’t even notice :) Maybe I’ll update it if I have to make a change in the component.

You can check the tab dragging in AE.Comp.PageControl, I'm handling the dragging of tabs almost the same way. The only difference I see is creating a DragObject in DoStartDrag but that shouldn't affect the check above as it's called from DragInitControl, which is called later.

I'd start by removing IDE extensions and/or component packages. Exception handlers like MadExcept can be installed in the IDE to handle Delphi exceptions too. I'd give that a try too, a stack trace may point out what is the culprit.

Are you in control of both the data and the header? If yes, open the file for writing in your preferred method (AssignFile, TFiles, TFileStream) and write the header, then the data. If you get a file from an external source and you need to add a header, the easiest solution is a stream. Write your header and then copy the data from said file, loaded in a TFileStream. If you receive one header files and need to append data, all 3 methods (AssignFile, TFile, TFileStream) can append binary data to it.

I never checked, but isn’t the Delphi localization file a regular resource DLL, without code? If this is the case (and your source is not IFDEF-ing resource stings) the same file can be used by 32 and 64 bit applications. Afaik a new DLL is only required if there is ANY code (including self-extracting, like UPX).

The whole thing started with this topic. Due to lack of possibilities, I wrote my own update mechanism which noes not rely on any advanced stuff but still should be versatile enough. Since the initial version TAEUpdater got some improvements and things are looking great. Some more stuff was implemented like hash-based verification, messages, E-tag caching, separate internal, development and production channels, ability to downgrade to a previous version, etc. I'm running it in my main application for a while and it seems to do the job correctly. Since not all of us might update from an unauthenticated web server, now 3 different file providers are shipped: HTTP, flatfile and custom. HTTP uses Delphi's TNetHTTPClient, flatfile reads the files from a local disk and custom has all necessary events exposed via events. I also got rid of some personal dependencies (like compressing the update file or using System.Zip2) and now everything is handed to the user for the solution to be more... generic. I still use my own version discovery and comparison method to be able to determine which published one is "newer" but that is going to be my next step. As a workaround, you can call .LoadUpdateFile, check the new version in each ActualProduct.Files and call .Update manually. What it needs: - An update file containing the product, all its files and versions. You can build this with TAEUpdateFile.SaveToStream in AE.Updater.UpdateFile.pas - Update packages, which can be zipped or encrypted, on FTP, HTTP, custom protocol - doesn't matter as events should be in place for performing all these actions Plans for the future: - Getting rid of more dependencies, maybe it'll become a standalone updater package with no extras - By accomplishing the above the code will get closer and closer to be truly cross-platform (atm it's WIndows only) - Get rid of modern stuff (like generics) and implement proper versioning conditionals so the package can be compiled and installed on anything other than D11.2 - Really, really basic documentation on how to use... Disclaimer: further changes are on their way. I'll possibly add / remove events / splitting the component in multiple subcomponents which might make existing .DFMs failing to be streamed. Also, publish your new versions on the Internal channel if I might break the core functionality 😞 All words as one - I just wanted to give the existing Delphi community a chance to implement auto-updating feature to their applications without having to pay for the component or the backend. Feel free to check it out. And suggest ways of improvement of course 🙂

There are lots of people who dislike Generics and would like to avoid having them in their projects. Using a standard TList and casting pointers can be an easy solution. In theory this whole thing could be D7 compatible if I'd invest enough free time in it. We'll see. So the author of said stack trace unit was you? 🙂 I remember having it for ages without any sign of where / who it came from so I can give appropriate credit. There were also some cyrillic characters in it which threw me totally off. As it seems it grew a lot, and since the new version is on GitHub it's easier just to remove it from mine. I don't like redundancy.

Came here to post the same. Better translation manager is working wonders.

All programs only show you the place the leaked object was created. It has no idea where you want to free it up. What is the leaked object?

Hello, Let's imagine the following scenario. I made a custom component which resides on a VCL frame. First of all, it's a lot easier to design something if you can see it (hence no TPanel) and some components require a form or a frame as a parent. It looks like this: Install it to the IDE and create a new application. Place this component on the form. Issue #1: You can not select individual components, any click with the mouse will select the whole frame instead. This is not a big thing, as you still can select its child components in the Structure pane. Now, save your project in an empty git repository and commit once, so you can compare the differences. Load up the project again, select the TEdit and enter something as it's Text property: Save your project again and check the differences in the DFM: Issue #2: All property changes in the components children are simply discarded. I can get around this one too by setting these in runtime, but it's less convenient that directly in the IDE. I suppose this is a limitation, I shouldn't design my custom component on a frame. How else can I achieve graphical designability in the IDE and how can I force for example a dxBarManager toolbars to stay within the components boundaries? I'm also interested about the reason why these things happen, if someone knows by heart. Cheers!

I'm experimenting with this but I can not seem to get it to work. procedure TMyTempComponent.HitTest(Var Msg: TCMDesignHitTest); begin // ShowMessage('Edit1.BoundsRect.Top: ' + Edit1.BoundsRect.Top.ToString + sLineBreak + // 'Edit1.BoundsRect.Left: ' + Edit1.BoundsRect.Left.ToString + sLineBreak + // 'Edit1.BoundsRect.Bottom: ' + Edit1.BoundsRect.Bottom.ToString + sLineBreak + // 'Edit1.BoundsRect.Right: ' + Edit1.BoundsRect.Right.ToString + sLineBreak + sLineBreak + // 'Msg.XPos: ' + Msg.XPos.ToString + sLineBreak + // 'Msg.YPos: ' + Msg.YPos.ToString); If PtInRect(Edit1.BoundsRect, Point(Msg.XPos, Msg.YPos)) Then Msg.Result := 1 Else Msg.Result := 0; end; The event does not fire at all if I move the cursor over any child component (Edit, button or radiogroup) only when it is over the frame itself. I also tried adding ControlStyle:= ControlStyle - [csDesignInteractive]; in the constructor. I'll keep trying, but am I on the right track here? Maybe frames are just work... different? 🙂

This is why 🙂

Sure. There is no code whatsoever: unit TempComponent; interface uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls; type TMyTempComponent = class(TFrame) Edit1: TEdit; Button1: TButton; RadioGroup1: TRadioGroup; private { Private declarations } public { Public declarations } end; Procedure Register; implementation Procedure Register; Begin RegisterComponents('Temp component', [TMyTempComponent]); End; {$R *.dfm} end.

Hello, I'm using TurboPack SynEdit latest version, fresh from GitHub. I have an editor where the user can enter multiple SQL commands, like: SELECT * FROM MYTABLE SELECT * FROM OTHERTABLE o [...] Is there a way SynEdt can return the full block, but the current command only? So, if the cursor is staying in line 1 just return "SELECT * FROM MYTABLE" but at line 2 it would "SELECT * FROM OTHERTABLE o"? Keep in mind that commands can be split across several lines, so simply returning the current line is not a good solution. Summoning @pyscripter 🙂

For anyone interested I solved this without writing an actual interpreter, it parses all select aliases. The backdraw is that it offers aliases to use in statements where there is no such alias therefore executing the statement will throw an exception. This annoyance is perfectly acceptable by me, so probably I'll just leave it as it is. It derives a new analyzer from Zeos's generic analyzer, and it looks like this: Unit uAEGenericSqlAnalyser; Interface Uses ZGenericSqlAnalyser, ZTokenizer, ZSelectSchema; Type TAEGenericSqlAnalyser = Class(TZGenericStatementAnalyser) public Function DefineAllSelectSchemaFromQuery(const Tokenizer: IZTokenizer; const SQL: string): TArray<IZSelectSchema>; End; Implementation Uses System.Contnrs, System.Classes; Function TAEGenericSqlAnalyser.DefineAllSelectSchemaFromQuery(Const Tokenizer: IZTokenizer; Const SQL: string): TArray<IZSelectSchema>; Var Tokens: TZTokenList; sections: TObjectList; ss: IZSelectSchema; FromTokens: TZTokenList; deleted: Boolean; Begin SetLength(Result, 0); Tokens := TokenizeQuery(Tokenizer, SQL, True); Sections := SplitSections(Tokens); Try Repeat ss := DefineSelectSchemaFromSections(Sections); If Assigned(ss) Then Begin SetLength(Result, Length(Result) + 1); Result[High(Result)] := ss; FromTokens := FindSectionTokens(Sections, 'FROM'); deleted := False; While (Sections.Count > 0) And Not deleted Do Begin deleted := TZStatementSection(sections[0]).Tokens = FromTokens; Sections.Delete(0); End; End; Until ss = nil; Finally Tokens.Free; Sections.Free; End; End; End. To use it: Procedure TForm1.GetTableName(Var inNameOrAlias: String); Var sa: TAEGenericSqlAnalyser; sch: IZSelectSchema; a: Integer; Begin sa := TAEGenericSqlAnalyser.Create; Try For sch In sa.DefineAllSelectSchemaFromQuery(SQLConnection.DbcConnection.GetTokenizer, SQLCommand) Do For a := 0 To sch.TableCount - 1 Do If sch.Tables[a].Table.ToLower = inNameOrAlias.ToLower Then Exit Else If sch.Tables[a].Alias.ToLower = inNameOrAlias.ToLower Then Begin inNameOrAlias := sch.Tables[a].Table; Exit; End; Finally FreeAndNil(sa); End; End; SQLConnection is a TZConnection object (can be replaced with TZTokenizer.Create if no connection is available), SQLCommand is the string containing all the statements. Simply call this method to "convert" an alias to a table name. It can be optimized but since it's already pretty quick, I didn't really bother. Yeah, extracting the current block would be more elegant. In 1 hours with minimal personal code, this is what I could achieve 🙂

I was afraid of this so. I do use ZeosLib. The main purpose I'm interested about the current command is to parse table aliases (which Zeos is kind enough to do so) but I need to be able to provide the current command only - otherwise it only considers the first one. Even though if I can split up to separate commands, I somehow need to confirm if that is the command under the cursor...

Hello, We have a custom component derived from Delphi's standard TPanel. What I realized is that the ParentBackground property resets to False each time the form is opened in the Delphi IDE (no saving is required, it automatically updates the DFM). There are no mentions / changes made to this property in the component's code and the situation does not change even if I add this published property: property ParentBackground stored true default True; I found an old topic about OldCreateOrder behaving the same way, but the proposed solution (remove the ParentBackground = False from the DFM with a text editor) only works until the form is reopened again - then it will automatically reset to False and update the DFM immediately without saving. I'll keep digging and investigating but if anyone has experience with this please do not hesitate to share the solution 🙂 Thanks!

So, the issue had nothing to do with the panel, but a label on it... and by replacing it from TLabel to TcxLabel to be precise. There was a section in the constructor which looked like this: With TLabel.Create Do Begin // [...] If criteria Then Color := clRed; End; This was fine but in the moment someone changed it with cxLabel (which has no public .Color property) that one line immediately turned ParentBackground off on the panel as it changed it's color instead of the labels. This is one reason I hate With blocks 😞

Hello, I just finished rewriting a method which now only lists font names useable by TSynEdit. The theory is easy; while enumerating Screen.Fonts I'm passing them to the exact same check as TSynEdit does (SynDWrite.pas, IsFontMonospacedAndValid). If it returns true, I add it to the list. The issue is, there is a CheckOSError call in said method which break the execution of the program way too many times if it is run from the IDE. The current implementation is as follows: function IsFontMonospacedAndValid(Font: TFont): Boolean; var LogFont: TLogFont; DWFont: IDWriteFont; begin try Assert(GetObject(Font.Handle, SizeOf(TLogFont), @LogFont) <> 0); CheckOSError(TSynDWrite.GDIInterop.CreateFontFromLOGFONT(LogFont, DWFont)); Result := (DWFont as IDWriteFont1).IsMonospacedFont; if (FontFamilyName(DWFont) <> Font.Name) and (fsBold in Font.Style) then Font.Style := Font.Style - [fsBold]; except Exit(False); end; end; I can put the EOSError exception type as a globally ignored one in Tools / Options but understandably it is not an ideal solution. I also could copy and paste this check, removing the CheckOSError but if I do I have to keep an eye on the official implementation to make sure to update my version if the original changes. Is there a compiler directive which will ignore a specific exception type within a block of code? Thanks!

@Steven Kamradt An important rule of writing maintainable software is that you are not changing the code in any external components. Doing that will come to bite you in the back later on; especially if you try to update said component.

I solved this issue by changing my icons to Material Designs Webfont and providing them to my application using Icon Fonts Image list. When the style changes I just update the .FontColor property of the image list to TStyleManager.ActiveStyle.GetStyleFontColor(sfWindowTextNormal). This way I can be certain that whatever is selected, my toolbar and popup menu icons are always visible. As an extra, if you are fine with the monochrome look, you can spare the fee of the designer.