Still need to research this: [WayBack] I search for way to automatically generate class body from interface definition… – Jacek Laskowski – Google+
–jeroen
Archive for the ‘Event’ Category
On my research list: Delphi; automatically generate class body from interface definition
Posted by jpluimers on 2019/01/23
Posted in Conference Topics, Conferences, Delphi, Development, Event, ModelMaker Code Explorer, Software Development | 2 Comments »
Why don’t I get the warning W1036 Variable “‘MyStrings’ might not have been initialized”…
Posted by jpluimers on 2019/01/21
Historically, [WayBack] W1036: Variable '%s' might not have been initialized (Delphi) has had a lot of gotchas.
The most important still is that it never show for managed types (strings, interfaces, etc).
Usually W1036 shows for non-managed types, but Dan Hacker has found a new case where it does not in [WayBack] Why don’t I get the warning W1036 Variable “‘MyStrings’ might not have been initialized’ if the StringsToDo parameter in DoSomething is defined as a var… – Dan Hacker – Google+
He noticed it in Delphi XE and 10.2 Tokyo.
I tested it with the Win32 compiler in XE8.
This warns:
program W1036;
{$APPTYPE CONSOLE}
uses
System.SysUtils,
System.Classes;
procedure DoSomething(var StringsToDo: TStringList); // <-------- this line makes the difference
begin
//do nothing
end;
procedure Test;
var
MyStrings : TStringList;
begin
MyStrings.Free; {W1036 warning if StringsToDo param is NOT var}
DoSomething(MyStrings);
end;
begin
end.
This does not warn:
program W1036;
{$APPTYPE CONSOLE}
uses
System.SysUtils,
System.Classes;
procedure DoSomething(StringsToDo: TStringList); // <-------- this line makes the difference
begin
//do nothing
end;
procedure Test;
var
MyStrings : TStringList;
begin
MyStrings.Free; {W1036 warning if StringsToDo param is NOT var}
DoSomething(MyStrings);
end;
begin
end.
initially, I misread his report and reacted wrongly on the cause (but rightly on the suggested use case of var and of TStringList):
Because a var parameter means that the caller should pass in an initialised parameter. Otherwise it should be an
outparameter, not avarparameter.
varparameter for reference types likeTStrings(only pass asTStringListif it deliberately is not compatible withTStrings) is a risky thing anyway, because the called method can overwrite it and then the caller has to notice the change, then decide what to do with the previous value (likely free it).
I later correct myself:
Looking better, I think it is a compiler issue.
The only difference between nothing and var is the loading of the parameter as a pointer:
with
var//W1036.dpr.16: MyStrings.Free; {W1036 warning if StringsToDo param is NOT var}
//004CD924 8B45FC mov eax,[ebp-$04]
//004CD927 E8B8A6F3FF call TObject.Free
//Project1.dpr.17: DoSomething(MyStrings);
//004CD92C 8D45FC lea eax,[ebp-$04]
//004CD92F E8E0FFFFFF call DoSomethingwithout
var//W1036.dpr.16: MyStrings.Free; {W1036 warning if StringsToDo param is NOT var}
//004CD924 8B45FC mov eax,[ebp-$04]
//004CD927 E8B8A6F3FF call TObject.Free
//Project1.dpr.17: DoSomething(MyStrings);
//004CD92C 8B45FC mov eax,[ebp-$04]
//004CD92F E8E0FFFFFF call DoSomething
So:
- with a
var, a pointer to the instance ofMyStrings(obtained by aleainstruction) gets pushed on the stack - without a
var, the instance ofMyStrings(obtained by amovinstruction) gets pushed on the stack.
For the difference metween mov and lea, and the use of [] brackets, see:
- [WayBack] assembly – What is the difference between MOV and LEA? – Stack Overflow
- [WayBack] assembly – What do the brackets mean in x86 asm? – Stack Overflow:
Given the following
code:L1 db "word", 0
mov al, [L1]
mov eax, L1What do the brackets ([L1]) represent?
–jeroen
Source: Why don’t I get the warning W1036 Variable “‘MyStrings’ might not have been i…
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The biggest lie I tell myself is not about new years resolutions.
Posted by jpluimers on 2019/01/01
The biggest lie I tell myself is “I don’t need to write that down, I’ll remember it”
It’s likely older, but the oldest reference I could find was 2012 [WayBack].
So before I forget:
Happy New Year everyone!
With the above quote, it is no coincidence I started my blog even earlier (in 2009): it’s my off-line memory, way better readable than my hand-writing and indexed by various search engines.
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Do not put IFDEF with relative paths in your .dpr as the Delphi IDE cannot match them in the .dproj
Posted by jpluimers on 2018/12/20
The Delphi IDE manages the .dpr and .dproj files for, trying to keep them in sync.
Some information is duplicated between the two, especially files referenced by relative paths: those files are contained in your project.
This means you cannot do something like this in your .dpr file:
{$IFDEF DEBUG}
Debug in '..\..\..\..\Shared\Debug.pas';
{$ELSE}
Debug in '..\Debug.pas'
{$ENDIF}
There is no equivalent for this in the .dproj and it will confuse the IDE which file now actually is or is not inside your project.
Better to leave the file outside of your project, then modify the RELEASE/DEBUG search paths to have the correct one.
Even better is to have just one Debug.pas file containing the changes.
–jeroen
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Never ever put OutpugDebugString in code that is meant to run on production systems
Posted by jpluimers on 2018/12/18
I just saw this code in the Delphi RTL enabled for RELEASE builds of the procedure TThreadPool.TQueueWorkerThread.Execute; code:
{$IFDEF MSWINDOWS} OutputDebugString(PChar(Format('Thread Exiting: %d', [ThreadId]))); {$ENDIF}
Never, ever do this.
If you code review code that contains it: ensure it has some kind of compile time DEBUG conditional around it.
–jeroen
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Delphi 10.3 Rio got released; I’ll wait a while hoping to see more positive comments
Posted by jpluimers on 2018/11/22
The first messages on G+ saw about Delphi 10.3 Rio are these:
- [WayBack] Delphi 10.3 is online. – Ralf Stocker – Google+
- [WayBack] The platform selection in Delphi Rio seems to be down. – Gert Scholten – Google+
- [WayBack] license.embarcadero.com is down. Perhaps this is a good sign, because of overwhelming interest in Rio, but it does not make a great impression. Can thi… – Johan Bontes – Google+
- [WayBack] Great new feature of 10.3 – Tomasz Kunicki – Google+
- [WayBack] Just installed Delphi 10.3 and used migrationtool.exe to import 10.2 settings, and my projects fail to compile with the following error (I am not even c… – Eric Grange – Google+
- [WayBack] FMX minimize bug fix for Delphi Rio Community. The two screenshots show you how. https://quality.embarcadero.com/browse/RSP-17322 You at home would ne… – Gustav Schubert – Google+
- [RSP-17285] Window minimize-restore via taskbar icon click is broken in all Windows flavours – Embarcadero Technologies (10.1/10.2 problem that was supposedly fixed in 10.3)
- [RSP-17322] Window minimize-restore via taskbar icon click is broken in all Windows flavours – Embarcadero Technologies has the fix for 10.3, but did not make it in 10.3
- [WayBack] I think I figured it out and here is my unofficial update to FMX.Platform.Win ready for beta testing. Improvement claims: 1) click on task bar button w… – Gustav Schubert – Google+
- [WayBack] … but I am working on it. I have already installed the new version and it compiles on my machine. But don’t hold your breath, there are some issues. Unt… – Thomas Mueller (dummzeuch) – Google+
- [WayBack] I’m having serious problems with the license registration. Have submitted a support case this morning but did not get a reply yet, and now it is weekend… – Reinier Sterkenburg – Google+
- [WayBack1/WayBack2] RIO – First thoughts: No additional downloads, no interbase (I check install everything). No love for the Win64 C++ compiler. First time I can recall th… – Joe C. Hecht – Google+
- [WayBack] I’ve had quite a few enquiries about when the Parnassus plugins (Bookmarks and Navigator) are coming to 10.3 Rio. The answer is soon! Ideally, they’d … – David Millington – Google+
-
“I would have preferred to have the plugins ready at the same time Rio shipped, but shipping Rio itself took precedence.” – if you would have done that you would have seen for yourself where it still has some glitches and what is problematic for third party plugin developers before the release, but hey…
-
[WayBack] Are these menus removed in 10.3 Rio? “The context menus for the code editor tabs and files in the Project Manager now have a “Show In Explorer” menu it… – Zhan Wang – Google+
-
They got lost during the IDE revamp – known but not fixed yet. -.-
-
- [WayBack] I have just downloaded 10.3 and after less than 1 minute I already have found an issue. Does this happen to you too? It seems that code insight does n… – Alberto Miola – Google+ about [RSP-21719] Error insight incorrectly marks inline var as error – Embarcadero Technologieswhich has a nice discussion on inline variables (for me, inline variables often indicate a refactor-to-method should take place, but I do like the type inference part), including:
-
+Ralf Stocker On the contrary. Inline variables reduce scope, make code more readable and remove a whole range of potential bugs.
You can make fine mess out of your code with or without inline variables. And if you do it will not be their fault but yours.
-
+Darian Miller So we should never get any new features because existing tutorials will be broken and we will have to learn something new?
If you are confused by reading code with inline variables more than five minutes after you have learned about existence of that feature, maybe you are in the wrong profession.
And no, reducing scope is not code smell. You cannot always refactor into another method. Small methods are good, but they must have some logical organization.
Too much granulation can be equally bad as too less granulation.
-
+Darian Miller First of all, you don’t have to use inline variables if you don’t like them. Cost of readability, departure from historical context/documentation, lack of backward compatibility will equal to zero. Even the tooling will not be broken if you don’t use it (unless, of course you don’t write tools)
Some benefits, there are too many to write them all:
- loop variables – they definitely belong into loop scope, and they do pollute variable declaration block with unnecessary cruft.
- Other temporary variables you may need, that also don’t belong into main declaration block, like explicit references for better handling and more control over compiler introduced implicit references – those are especially useful for controlling ARC references – and we do have ARC in classic compiler, too.
- skip unnecessary automatic initialization/finalization of managed variables in code paths that will not execute – speed optimization.
- Preventing errors (for some you have compiler hints, but if you miss the hint…) – some examples
You cannot forget to initialize variable before use
procedure Test1; begin var sl := TStringList.Create; try finally sl.Free; end; end;You cannot use variable that belongs to wrong scope and might be uninitialized – this code will not compile
procedure Test2; begin try var sl := TStringList.Create; finally sl.Free; end; end;5. Type inference – repeating type two times, especially with generics makes code harder to read because while you are skipping reading redundant information, you may skip important one.
This is just the tip of the iceberg. Inline variables are without a doubt extremely valuable feature.
-
Coding will be a lot simpler as Dalija explained. Here an example using generics:
TYourType = TDictionary<String, Cardinal>; TYourClass = class fSomeDic : TYourType public procedure DoSomething; end; implementation procedure TYourClass.DoSomething; begin for var lItem in fSomeDic do litem.Value := 10; end;As you see this is very easy to read. And litem belongs to the for loop. It doesn’t exists outside. Any reference to it will raise an error.
If you need to change your base type to
TYoutype = TDictionary<string, uint64>;There’s nothing else to change. No need to hunt every
tpair<K,V>declaration.You have the tools, use it at you see fit!
-
- Darian Miller
+Dalija Prasnikar Not sure why I waste the time… but to say cost is zero is just pontification which is sometimes hard to ignore. Say I don’t use the new feature myself as I need to stay on an older version… now, say there’s a new tool just posted to GitHub and it highly leverages this functionality. I cannot use that tool without some effort. The cost is not zero. Say you are on the latest version, but you rely on tooling that cannot parse this new form of variable definition. Your tooling for code documentation, coverage analysis, static code analysis could be completely broken the second any of this code gets introduced into the project. I simply object to saying there’s zero associated cost. That’s really not true. There are actual, real-life difficulties introduced with a major change like this. For me, the costs (all of them) are not worth the benefits (which I acknowledge are present.) But this is a really moot because it wasn’t my decision to introduce this feature at this time (which I would have vehemently voted against – at this time.) I haven’t checked to see if Peganza’s tools were upgraded to handle this version. My assumption is they haven’t, so this coding style is forbidden in new code until such time as the tooling catches up.
- So Error Insight got no changes, which means old bugs are still there: [WayBack] 7 Major versions later and Delphi hasn’t improved a bit! Delphi IDE’s error insight complains about this perfectly valid code: if aHeader.RecType…. – Graeme Geldenhuys – Google+
- [WayBack] +Marco Cantù is unstoppable. I can’t keep up LOL – Clement Doss – Google+
-
I’m wondering why use zlib 1.2.8 when 1.2.11 is available since January 15, 2017? zlib.net – zlib Home Site
- [WayBack] zlib Home Site: Current release: zlib 1.2.11 January 15, 2017
-
- [WayBack] I have one application, which when I compile it for Win32, ends its compile with: F2084 Internal Error: C2527. This is in Delphi 10.3 Rio. When compili… – Reinier Sterkenburg – Google+
- [RSP-21806] F2084 Internal Error: C2527 – Embarcadero Technologies
program Test_C2527; {$APPTYPE CONSOLE} uses Generics.Collections; type TData = record Z: Integer; end; var Q: TThreadedQueue; begin end.- I’ve checked: Adding a string to the record helps.
Making it a class instead of a record also helps.
- I’ve checked: Adding a string to the record helps.
- [RSP-21790] Records & Int64 [dcc32 Fatal Error] F2084 Internal Error: C5551 – Embarcadero Technologies
- I also noticed that the error when deactivating the optimization in the project options, no longer occurs .
Project > Options > Delphi Compiler > Compiling -> [ Optimization := False ] works
Project > Options > Delphi Compiler > Compiling -> [ Optimization := True ] doesn’t work
- I also noticed that the error when deactivating the optimization in the project options, no longer occurs .
- [RSP-19558] F2084 Internal Error: C2489 – Embarcadero Technologies
program Project3; {$APPTYPE CONSOLE} uses Generics.Collections, Types; type TDateAndRawData = record Values : PDouble; // pointer to the data 'array' end; TDataQueue = TThreadedQueue<TDateAndRawData>; begin end.- Changing “record” to “class” makes the error disappear.
- I also get the error with “values : integer”.
It seems to fail with any non-managed items. Adding a managed field (e.g. x: string) to the record helps! - It fails for 32-bit Windows target platform.
For 64-bit Windows target platform it compiles without issue.
Other target platforms not tested…
- [RSP-21806] F2084 Internal Error: C2527 – Embarcadero Technologies
- [WayBack] Delphi IDE Explorer is broken in Delphi 10.3 Rio – twm’s blog because the Project Options dialog now uses the Screen.OnActiveControlChange event itself and does not bother to call the original event.
- Via [WayBack] I just found out what is wrong with my Delphi IDE Explorer in Delphi 10.3 Rio. The symptom is that the Follow Focus option and the Select Active button … – Thomas Mueller (dummzeuch) – Google+
- Related (conference worthy!): [WayBack] Safe event hooking for Delphi IDE plugins revisited – twm’s blog
- [WayBack] Andreas on Twitter: “What’s with the Delphi Rio Debugger? The CPU view shows the wrong XMM registers in the disassembly. The blue dots in the RTL/VCL (rtl.bpl/vcl.bpl) are at the correct position but when debugging (breakpoints, stop over/in) the debugger jumps like crazy through the code.”
- [WayBack] I’m wondering today after receiving my renewal quote which is 50% of the value of a new license, do we ever get the right to force Embarcadero to do wha… – Andrew Pratt – Google+
- [WayBack] Delphi 10.3 Rio – Language Changes – VSoft Technologies blog via [WayBack] Blogged – Delphi 10.3 Rio Language Changes – Vincent Parrett – Google+:
So lets take a look at which suggestions made the cut for 10.3 – referencing my original post.
Feature Implemented Comments … No Type Inference Yes! For inline variables only, Confuses code insight! Inline variable declaration, with type inference and block scope Yes, Yes and Yes! Confuses code insight! Loop variable inline declaration Yes! Confuses code insight! … No
Related:
- [WayBack] Andreas on Twitter: “Using Delphi Rio and wondering why the IDE behaves differently. Well, while making DDevExtensions compatible with Rio there is no DDevExtensions for Rio.”
I think I will wait a while before installing until more positive messages are being published.
If you do want to try, the hashes of delphicbuilder10_3_0_94364.iso are these:
crc32 157b6e36 md5 0882d58cb53a7d0a828cc45d06c6ecd0 sha1 21579b530f781895885923809d9e670b439ebf9d sha256 9213de93c2abdd6a2ee23aa84fc7e63a87d62d0344f0d0f0ee162d0e7dce7c7d
and for the radstudio10_3_0_esd_94364.exe they are:
crc32 033aeb53 md5 b25fab9d5f0724fb1d59ea77deff6702 sha1 289bbf33c90ae43b151af116e1e7c7a5348591e6 sha256 fb9a825ddaf235441ff72c10fbb03d2cf94adb3f037508e69f0978a37dc95773
PS: [WayBack] How to verify file hashes on macOS | ModMy
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Solution for Delphi – post-build event with multiple if/copy combinations only execute if first file does not exist – Stack Overflow
Posted by jpluimers on 2018/11/15
My solution in [WayBack] delphi – post-build event with multiple if/copy combinations only execute if first file does not exist – Stack Overflow is an addendum to my 2014 post Delphi prebuild/prelink/postbuild events.
Here we go:
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Reminder to self: make a start for an XSD that validates Delphi dproj files
Posted by jpluimers on 2018/11/07
Below are a few interesting things from this thread [WayBack] Any idea why Delphi (At least since Seattle) does this to Dproj filesand… – Tommi Prami – Google+.
It’s likely that the WordPress system deleted parts between angle brackets because it thinks it’s invalid HTML and WordPress is PHP.
Anyhow: maybe by now I’ve found time for creating an XSD for .dproj files in addition to the one I mentioned yesterday for the .groupproj files: Validating a nested XML element with an empty namespace using XSD – Stack Overflow.
Oh and in the mean time for various Delphi versions, there is a (binary, because it uses some commercially licensed parts) [WayBack] Dproj changed or not changed? Normalize it! | The Art of Delphi Programming.
Files and directories I need to research:
- https://github.com/project-jedi/jcl/blob/master/jcl/source/windows/JclMsBuild.pas
- https://github.com/project-jedi/jcl/tree/master/jcl/packages/xml
- https://github.com/project-jedi/jvcl/blob/master/jvcl/devtools/Common/PackageInformation.pas
- https://github.com/project-jedi/jvcl/blob/master/jvcl/devtools/PackagesGenerator/PackageGenerator.pas
- https://github.com/project-jedi/jvcl/blob/master/jvcl/install/JVCLInstall/JVCLInstall.dpr
- https://github.com/project-jedi/jvcl/blob/master/jvcl/install/JVCLInstall/PackageUtils.pas
- https://github.com/project-jedi/jvcl/tree/master/jvcl/packages/xml
In the mean time, QualityPortal indicates that:
- fixed: RAD Studio – RSP-11308: Inconsistent sort order in dproj files causes havoc with version control systems.
- bit they missed fixing: RAD StudioRSP-18069: Inconsistent DeployFile sort order in .dproj
Achim Kalwa:
That is a long living bug: https://quality.embarcadero.com/browse/RSP-11308
Still exists in Berlin Update 2.Jeroen Wiert Pluimers
For more than a decade, the IDE rewriting dproj files in different order/indentation/spacing, properties appearing/disappearing in DFM files and writing DFM files despite no changes have driven me even more nuts than I was.Walter Prins
+Jeroen Wiert Pluimers Yes. Given that .dproj is XML I’ve been almost annoyed enough to look at making some kind of pre-checkin script to force sort things to try and avoid the issue. Almost… Edit: Ah, just checked that RSP, which references this: https://github.com/joshkel/RadCli Seems someone has already done it.Lübbe Onken
Did you try tidy_proj +Walter Prins? For me it fails with a “Unicode Encode Error” when I try to write an output file. In my case this is caused by German umlauts in the excluded bpl section descriptions. Changing the umlauts to something low-ascii allows tidy_proj to finish.Walter Prins
+Lübbe Onken No, but I have just done so. Unicode bites again. To fix that error, change line 125 from:print(proj.toxml())
to:
print(proj.toxml().encode(‘utf-8’))
Note: This will likely not display correctly if you allow the output to go to the console but will ensure it is correct if redirected back to file.
Edit: Ha, I was about to go report this issue ad suggest this fix, but I see you’ve already suggested essentially the same fix. ;)
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Jeroen Wiert Pluimers
+Walter Prins interesting tool! Do you know of a tool that can downgrade .dproj files so you can use them with older Delphi versions? (the opposite of what the IDE does)?Or someone that has written more than my XSD on .dproj files? My one is so small that’s hardly a real attempt. https://wiert.me/2013/08/31/delphi-first-try-on-an-xsd-for-groupproj-files/
Walter Prins
+Jeroen Wiert Pluimers No, but interesting idea. I suppose you’re probably aware that the JEDI JCL/JVCL takes a somewhat similar (ish) related approach, in that it generates project and package files that are compatible with every desired version of Delphi from minimalist (XML) template files. Every so often I think it might be worth looking whether one can re-use the code from there easily but haven’t gotten around to it. Always something else to do first. :/Jeroen Wiert Pluimers
+Walter Prins no I didn’t. Where should I start reading on that minimalist template approach?Walter Prins
+Jeroen Wiert Pluimers Sorry I see I missed out the word installer in my comment: It’s the Jedi JCL/JVCL installers that uses xml templates etc.But the point stands: I guess it should be (perhaps) possible to reuse its infrastructure for ones own projects, though as I say I keep meaning to look into this but haven’t really done so.
(BTW I’m assuming you are familiar with the JCL/JVCL and in in particular their installers that bootstrap from source code? If not then perhaps my comments may not be that useful?)
Anyway, not sure if or where there’s particular documentation about this (kind of doubt it), but if you have the JCL/JVCL installed somewhere, then first of all have a look at the “xml” folders e.g. “<jclroot>\jcl\packages\xmls” and “<jvclroot>\jvcl\packages\xml”.
These files appear to define projects and packages in a seemingly abstract/somewhat minimal way using XML. This seemingly is then used to automatically produce .dproj and .dpk files which are placed in e.g. “<jclroot>\jcl\packages\dXX” and “<jvclroot>\jvcl\packages\dXX” where dXX corresponds to a folder for each of the supported Delphi versions and compiled/used during installation.
Having just looked into this briefly a bit further as a result of this conversation: Key units here (in the case of JVCL) seems to be “<jvclroot>\devtools\PackagesGenerator\PackageGenerator.pas”, “<jvclroot>\install\JVCLInstall\PackageUtils.pas” and “<jvclroot>\devtools\common\PackageInformation.pas” (used predictably by <jvclroot>\JVCLInstall.dproj)
(Additionally, having looked at this a bit more closely, it also appears that the JCL does not actually replace all or even most of its .dproj and .dpk files after all, but ships version specific .dproj and .dpk files in most cases, though the JVCL does appear to mostly do so. )
Edit: The JCL also has this interesting sounding unit “jclroot>\source\windows\JclMsBuild.pas” which appears to be an MSBuild project file parser…
–jeroen
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Batch files and parentheses
Posted by jpluimers on 2018/10/31
Answering [WayBack] delphi – post-build event with multiple if/copy combinations only execute if first file does not exist – Stack Overflow made me do a quick search for parentheses handling in batch files. TL;DR: it is a mess.
But it reveals some interesting links:
- [WayBack] Error running command shell scripts that include parentheses
- [WayBack] Enabling the internal debug outputs of cmd.exe – DosTips.com
- [WayBack] Set – Environment Variable – Windows CMD – SS64.com
- [WayBack] Parenthesis/Brackets – Windows CMD – SS64.com
- [WayBack] Cmd | Microsoft Docs
- [WayBack] for | Microsoft Docs
- [WayBack] Environment variable expansion occurs when the command is read – The Old New Thing
- [WayBack] Beware of digits before the redirection operator – The Old New Thing
- [WayBack] What this batch file needs is more escape characters – The Old New Thing
- [WayBack] Multiple Commands On A Single Windows Command Line | Miscellaneous IT Pimpery
- [WayBack] Command Redirection, Pipes – Windows CMD – SS64.com
- [WayBack] Quotes, Escape Characters, Delimiters – Windows CMD – SS64.com
–jeroen
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A Key’s Odyssey – the path of a keystroke message through the VCL
Posted by jpluimers on 2018/10/09
Blast from the past, but still relevant, this article by Peter Below:
This article follows the path of a keystroke message through the VCL. You will learn how the key processing is implemented, how the OnKey events work and what intervention points for the programmer can be found in the whole process. In addition, things like message processing are explained, and you will learn how to trace messages in the debugger from the message loop to their eventual destination.
Source: [WayBack] A Key’s Odyssey
Via: [WayBack] Vcl.Controls.pasprocedure TWinControl.CNKeyDown(var Message: TWMKeyDown);..if IsMenuKey(Message) then Exit; … – Attila Kovacs – Google+
-jeroen
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The Wiert Corner - irregular stream of stuff 