 | Lars Fosdal on Security alarm provider Woonve… |
 | Thomas Mueller on Question got closed in May 202… |
 | Thaddy de Koning on Formulier voor bewindvoerders… |
| Thaddy de Koning on Formulier voor bewindvoerders… |
| Thaddy de Koning on Formulier voor bewindvoerders… |
Posted by jpluimers on 2016/12/27
A long while ago, but still an interesting discussion: Is there a predictable order of execution for Class Constructors? leading to these links:
–jeroen
Posted in Conference Topics, Conferences, Delphi, Delphi 10 Seattle, Delphi 2010, Delphi x64, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Event, Software Development | Leave a Comment »
Posted by jpluimers on 2016/12/22
In functional programming, sequences are an important way of expressing logic.
This G+ post by Colin Johnsun discusses a library and a Spring4D way to handle sequences: I’ve release a library that allows you to iterate through a collection of items without using loops…
It’s interesting when mapping, reducing and solving many other problems in a functional way.
Background:
–jeroen
Posted in Delphi, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2016/12/20
On my research list, as it works on both Windows and Android:
shadow_cs / delphi-leakcheck — Bitbucket: Multi-platform leak checking library for Delphi
via:
–jeroen
Posted in Delphi, Delphi 10 Seattle, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, DUnit, Software Development | Leave a Comment »
Posted by jpluimers on 2016/12/07
Formy snippet archive (thanks Walter Prins for answering and Oliver Funcke for asking and elaborating on the answer):
in the case of error, you can get what would’ve normally been in the contentstream from the
ExceptionObj.ErrorMessageproperty. So you can use something like the following if you want to get the content response regardless of http response code (untested):var FResponseStream: TStringStream; FRequestURL, Content : String; begin //.... etc etc try FIdHTTP.Get(FRequestURL, FResponseStream); Content := FResponseStream.DataString; except on E:EIdHTTPProtocolException do Content := E.ErrorMessage; end; // At this point, "Content" contains the response body, both for // successful (200) as well as other response codes. //.... etc etc end;….
You can even do it simpler:
Response := IdHTTP.Get('http://host/path', [404]);Source: delphi – Indy and REST – Can I prevent exceptions? – Stack Overflow
–jeroen
via:
Posted in Delphi, Delphi 10 Seattle, Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 2 Comments »
Posted by jpluimers on 2016/12/01
Thanks Alexey for answering and Horácio for asking:
Use type-cast PResStringRec(@SArgumentNil_NilValue_Collection)
–jeroen
via: Hey guys, When I switch on $TypedAddress Compiler Directive, it is no longer…
Posted in Delphi, Delphi 10 Seattle, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 7, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development, Uncategorized | Leave a Comment »
Posted by jpluimers on 2016/11/29
A long time ago, Lars Fosdal wrote this on the Delphi G+ group:
It really is beyond me why there is no Project.rc file which includes
- Project.version.rc
- Project.icon.rc
- Project.themes.rc
- Project.manifest.xml
- and so forth.
That way, the .res file would be a compile-time thing (or even a thing of the past) – and the resource linker would assemble the various bits from their individual sources.
It has been an issue forever. Vincent Parrett correctly commented that if you clean out too much out of the Project.res file, the IDE gets confused:
The only thing it is used for is version info and the mainicon (the IDE gets confused if don’t do that).
In my own experience, this isn’t the case for all Delphi versions, but I forgot which versions suffer and which don’t. I think the IDE theming issue omitting the Application word in the .dpr is related.
Like many of the G+ commenters, I’ve switched to script based resources for my own projects a long time ago. That’s also the reason why I forgot: this approach just works for any Delphi version.
This post is a reminder to self to see if the IDE has finally refrained from doing Project.res handling itself.
–jeroen
Source: The curse of the Project.res file…
Some related posts:
Posted in Delphi, Delphi 1, Delphi 10 Seattle, Delphi 2, Delphi 2005, Delphi 2006, Delphi 2007, Delphi 2009, Delphi 2010, Delphi 3, Delphi 4, Delphi 5, Delphi 6, Delphi 7, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 5 Comments »
Posted by jpluimers on 2016/11/24
Don’t you love relevant documentation…
There is no unit defined for the Vcl.Forms.TApplication.ActionUpdateDelay – RAD Studio API Documentation.
It is used inside the TAppliation.Idle to fire the (undocumented) TApplication.DoActionIdle method. When the value is zero or less, then each Idle call will result in an DoActionIdle call in turn calling TCustomForm.UpdateActions for any visible form.
UpdateActions in turn will call (for the form itself, all the form’s menu items and all the form’s controls) the TControl.InitiateAction which – if there is an associated ActionLink – will call the TBasicActionLink.Update which in turn will call the TBasicAction.Suspended and TBasicAction.Update methods of which the latter will call the TBasicAction.OnUpdate event if it is assigned.
In theory, the OnUpdate method for each action can even be called multiple times (because multiple controls on visible forms can point to it), but the real culprit is that TApplication.Idle as it can be called from these places:
The last three (especially HandleMessage) can be disastrous as they can be called a lot (for instance when moving the mouse), and more often than not, the OnUpdate event handlers aren’t exactly CPU friendly.
A while ago I bumped into an application where the OnUpdate event handler for one action was called half a million time in under 5 minutes.
This clearly indicated a huge problem (besides using a full CPU core slowing down the application) as apparently something was broadcasting Windows Messages like crazy.
Investigating and Solving the message flood is on the back-log with a reasonably high priority, but the highest priority issue was fixing the high CPU usage in the first place.
Apparently more users suffer from this, as there is a Vcl.Forms.TApplication.ActionUpdateDelay property which TApplication.Idle uses to call the Windows API function SetTimer to rate-limit the TApplication.DoActionIdle call tree. Luckily SetTimer does have documentation on the unit of ActionUpdateDelay: it’s milliseconds.
I’ve set it to 10 as that updating the actions ~100 times a second is fast enough for this application.
–jeroen
via:
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2016/11/08
This post is a reminder to myself that this plugin exists at all.
Hopefully by this time it supports more recent Delphi versions as well; when scheduling this post, it supported from XE to 10.1:
My SelectiveDebugging plug-in now supports Delphi 10.1 Berlin. The updated download can be found at the end of the corresponding blog post:… – Uwe Raabe – Google+ [WayBack]
–jeroen
via:
Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2016/11/08
If when setting up Continuous Integration (CI) with Delphi and you get errors like E2202 "Required package 'rtl' not found" or F1027 "Unit not found: 'System.pas'", then something is wrong with your library path on the CI server.
Before going into the details of why, the quick solution is to set either of these environment variables in your build script
Win32LibraryPathDelphiLibraryPathNow back to the details of why these might not be set, most information is from my Delphi build automation workshop.
Posted in Delphi, Delphi 10 Seattle, Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 1 Comment »
Posted by jpluimers on 2016/10/19
I like repositories to have as much of the information in text format.
Delphi traditionally puts both the MAINICON and the VersionInfo resources in a binary .res file and also updates that file on almost every recompile.
There are quite a few posts explaining how to get them from text, but a version controlled example works best for me, so there is one at https://github.com/jpluimers/atom-table-monitor/blob/master/ATOMScannerConsole
The trick is to:
| <RcCompile Include="MAINICON.rc"> | |
| <ModuleName>MAINICON.rc</ModuleName> | |
| <Form>MAINICON.res</Form> | |
| </RcCompile> | |
| <RcCompile Include="VERSIONINFO.rc"> | |
| <ModuleName>VERSIONINFO.rc</ModuleName> | |
| <Form>VERSIONINFO.res</Form> | |
| </RcCompile> |
Here are the example files:
Posted in Delphi, Delphi 10 Seattle, Delphi 2007, Delphi 2009, Delphi 2010, Delphi XE, Delphi XE2, Delphi XE3, Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, QC, Software Development | 2 Comments »
The Wiert Corner - irregular stream of stuff 