

Lajos Juhász
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Everything posted by Lajos Juhász
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MyCariable:=trunc(MyCariable*100)/100;
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This was correct until Delphi 10.4 when ARC ( Automatic Reference Counting) was removed. Now you code the same way on all of the platforms and have to call free or if you must call freeAndNil (freeAndNil is in 99.999999999999999999% a code smell.)
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He also mentioned that there are some corner cases where it's not and he believes that we should not have those cases. Best is to recompile everything.
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DB field update using "DataSet.FieldByName" is not working
Lajos Juhász replied to PenelopeSkye's topic in Databases
This logic most probably belongs to the field's onchange.- 10 replies
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- fieldbyname
- dataset
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The hotkey doesn't have to be the first character. A better solution is to set the AutoHotkeys property of the popup menu to maManual. If that's not possible you can use the StripHotkey function from Vcl.Menus to remove the &.
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According to the Delphi 11 feature matrix that's a Architect/Enterprise feature. I cannot check out for Delphi 10.4 but believe it's the same.
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TRichEdit in Delphi 11.1 ("Courier New" font broken with formatting characters))
Lajos Juhász replied to Denis Dresse's topic in VCL
I quick google search returned this one: https://devblogs.microsoft.com/math-in-office/richedit-font-binding/ I have to warn you that this is a bug in MS Richedit implementation. I've entered into Microsoft Word using Courier New 11 ──────────────────────────────. No problem there, then copied to the clipboard and pasted to Wordpad.exe the result wordpad changed the font to Segoe UI Symbol 11.- 17 replies
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- trichedit
- delphi 11.1
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Why not use the OnMoved event of the splitter?
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Do you get burn-in with LCD? While LCDs are not susceptible to burn-in the same way CRT monitors are, LCDs suffer from what manufacturers call image persistence. Like the burn-in on CRTs, image persistence on LCD monitors is caused by the continuous display of static graphics on the screen for extended periods. (I am not going to test this on my monitor)
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I would do something like this: var ws: TWindowState; l: TRect; begin ws:=WindowState; l:=BoundsRect; try if ws=wsMaximized then WindowState:=TWindowState.wsNormal; SetBounds(l.Left+1, l.Top+1, l.Width, l.Height); Repaint; Sleep(100); finally WindowState:=ws; if ws<>TWindowState.wsMaximized then SetBounds(l.Left, l.Top, l.Width, l.Height); repaint; end; end;
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What is the best way to convert between UnicodeString and UTF-8
Lajos Juhász replied to alank2's topic in General Help
It's https://docwiki.embarcadero.com/Libraries/Alexandria/en/System.UTF8Encode. -
In this case Fetchoptions doesn't make a difference. in order to do a client side filter the computer has to load all the data and then can filter out the requested records.
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Most probably you're loading 1.7GB data into the memory (you can verify using task manager). Insted of a client side filter you should do a server side.
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For me it's happening for about a year maybe a bit longer, before that I used the registry entry for years without a problem.
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If you really want to use TWebBrowser you must set FEATURE_BROWSER_EMULATION before using the component (Windows is going to remove it from the registry constantly). Of course this is only a short term solution as IE is dead.
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Delphi 10.4.2 won't open a specific .PAS file
Lajos Juhász replied to MJBComp's topic in Delphi IDE and APIs
I didn't started this thread. I just don't care anymore when something doesn't work in the IDE. I already failed to make a test case for more interesting bugs. I just like to use my time in a more productive way. -
Delphi 10.4.2 won't open a specific .PAS file
Lajos Juhász replied to MJBComp's topic in Delphi IDE and APIs
There are problems with ctrl+click to open files in D11.1 I didn't checked the RSP. (We can only hope that the beta testers will fill enough bug report on this issue and it will be fixed in the next versions. Dear beta testers the future of the Delphi community is in your hands). -
In the older version TDBImage didn't supported anything but bitmaps. That's why we used TEDBImage (there are also other sources still floating on the internet how to handle multiple formats in a blob stream).
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DBGrid repaint or refresh when dataset is refreshed
Lajos Juhász replied to ChrisChuah's topic in Databases
You can read the protected leftcol property of the grid: type TCrackDBGrid = class(TDBGrid); TCrackDBGrid(DBGrid1).LeftCol will return the first column of the screen. -
Usually this happens when you install a faulty package to the IDE. Try to uninstall every third party components. You can also try to start the IDE with a new registry key using the -r command line switch (https://docwiki.embarcadero.com/RADStudio/Alexandria/en/IDE_Command_Line_Switches_and_Options).
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What is the meaning of the square bracket in here?
Lajos Juhász replied to stacker_liew's topic in RTL and Delphi Object Pascal
I know I was tired and english is not mother tongue that's the reason why I later removed my original post. -
The relative path should be ..\SharedCode\FileUtils.pas. I opened a dpr and dproj for an application and there the paths are relative.
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What is the meaning of the square bracket in here?
Lajos Juhász replied to stacker_liew's topic in RTL and Delphi Object Pascal
Edit. Sorry it's late. -
[Android] How to change regional settings
Lajos Juhász replied to Fabian1648's topic in Cross-platform
Well, you're still changing the year from 2 digits to 4. Anyway Vandrovnik gave you the code I would use. -
does SetLength for an array actually release memory?
Lajos Juhász replied to dummzeuch's topic in RTL and Delphi Object Pascal
I peeked at the source code and it calls ReallocMem thus should work as expected.