Recent questions tagged Delphi

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Once upon a time, reading this question, I wondered how to rotate a bitmap by any degree without fiddling ... see an (efficient) implementation. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to change the implementation (detour) of an externally declared function

I have a third party function function DataCompare(const S1, S2: string; APartial: Boolean): Boolean; begin ... solution is very welcome. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to efficiently rotate bitmaps in code

Is there a faster way to rotate a large bitmap by 90 or 270 degrees than simply doing a nested loop with ... lines again and that is wasteful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - TLabel and TGroupbox Captions Flicker on Resize

So, I have an application that loads different plugins and creates a new tab on a TPageControl for each one. ... edit ControlState) Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Antivirus False positive in my executable

I just ran into an annoying problem. Suddenly Avira AntiVir started to flag one executable from my software as ... you have any creative idea. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to direct the mouse wheel input to control under cursor instead of focused?

I use a number of scrolling controls: TTreeViews, TListViews, DevExpress cxGrids and cxTreeLists, etc. When the mouse ... IDE works very nicely in this regard. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Registration-free COM/DLL?

My program is using the Skype4COM.dll (A wrapper for the Skype API). I am using Delphi 2010 - is there a way to ... is: Can we do that in Delphi, too? Thanks! Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Windows Visual Themes: Gallery of Parts and States?

Microsoft Windows lets programmers draw GUI elements using the look and feel of the current theme using functions like ... the default Windows Vista/7 theme)? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to define application version in one place for multiple applications?

We have a system which consists of numerous applications. All applications have their version changed at the same time. ... only. Can this be done? and how? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - System Error. Code: 8. Not enough storage is available to process this command

We have a few Win32 applications (coded in Delphi 2006) where sometimes the user gets an error message saying ... of the problem it certainly looks likely. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Why do I get "type has no typeinfo" error with an enum type

I have declared the following enum type in which I want the first member to have the ordinal value of ... special conditions for having typeinfo for enum types. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How do I make my GUI behave well when Windows font scaling is greater than 100%

When choosing large font sizes in the Windows control panel (like 125%, or 150%) then there are problems in a ... . What can be done to overcome this problem? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to dynamically create controls aligned to the top but after other aligned controls?

In this particular case I'm using PowerPDF library to dynamically build a PDF document, but the same applies for the ... = 40; //Default, may change later end; Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How can I tell if another instance of my program is already running?

How do i tell if one instance of my program is running? I thought I could do this with a data file but it ... want 1 instance to ever be open at one point. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Debugging Access Violation errors?

What tips can you share to help locate and fix access violations when writing applications in Delphi? I believe ... So advice and tips would be very useful. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Split a string into an array of strings based on a delimiter

I'm trying to find a Delphi function that will split an input string into an array of strings based on a delimiter. I' ... 'doc,txt,docx']. How can I do that? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to detect true Windows version?

I know I can call the GetVersionEx Win32 API function to retrieve Windows version. In most cases returned ... this behaviour and get true Windows version? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Buffered files (for faster disk access)

I am working with large files and writing directly to disk is slow. Because the file is large I ... System.Classes.TBufferedFileStream seems to be 70% faster. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Why should I not use "if Assigned()" before accessing objects?

This question is a continuance of a particular comment from people on stackoverflow which I've seen a few different ... nil. So both checks should be necessary. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Problems with ADC/SBB and INC/DEC in tight loops on some CPUs

I am writing a simple BigInteger type in Delphi. It mainly consists of a dynamic array of TLimb, where a TLimb ... 't suffer from a partial flag register stall. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Why can a WideString not be used as a function return value for interop?

I have, on more than one occasion, advised people to use a return value of type WideString for interop purposes. ... BSTRs? Or is it just a Delphi defect? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Converting a string to Cardinal / UInt32

I need to convert a string to an unsigned 32 bit integer (Cardinal). In System.SysUtils unit there ... /stackoverflow.com/questions/65842281/converting-a-string-to-cardinal-uint32...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - dbxfb not found when using firebird 2.5

On my development machine, I have Delphi 10.2 and Firebird 2.5. Database apps that I create in this configuration ... com/questions/65843808/dbxfb-not-found-when-using-firebird-2-5...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - TStreamWriter locks file for Read

In our project, we are using a StreamWriter to write into a log file. While writing, I wanted to ... https://stackoverflow.com/questions/65843958/tstreamwriter-locks-file-for-read...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi xe - TDBXError Loading SSL module failed on MACOS Big Sur - Datasnap TCP/IP

My app is using Datasnap via TCP/IP connection. On Mac with Big Sur I get some SSL Loading error while connecting ... -loading-ssl-module-failed-on-macos-big-sur-datasnap-tcp-ip...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - "Argument out of range" exception when I call the procedure

Closed. This question needs debugging details. It is not currently accepting answers. question from:https://stackoverflow. ... -out-of-range-exception-when-i-call-the-procedure...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - What is the maximum file size for TIniFile?

My program manipulates an ini file using TIniFile. I've read TIniFile class has 64kb limit in single section. ... /questions/65852003/what-is-the-maximum-file-size-for-tinifile...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Why aren't local type declarations inherited?

Let's say I have a class that declares a local type like this: type TAncestor = class type ... /stackoverflow.com/questions/65860291/why-arent-local-type-declarations-inherited...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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