Recent questions tagged Delphi

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delphi - What is the meaning of nil owner in component constructor

I was looking at this question and I'm wondering now, what is the meaning of nil as the owner in component ... garbage ? Thanks a lot :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi TColor format Negative

hopefully an easy question, but I could not find an answer. I am using Delphi TColor and some color values ... -16777188; //light bluish Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Application locks while trying to access TWebbrowsers HTML

Edit Narrowed it down to this 1 line, HTML := wb.OleObject.Document.documentElement.innerHTML; which consumes the ... the HTML of TWebbrowser? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Why are files sometimes a different size or corrupt after transferring by FTP?

I'm having a problem downloading a file using the TidFTP component in Delphi XE2. I am able to get a connection ... (e.message); end; end; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Can I make a TMemo size itself to the text it contains?

When you edit a TLabel's caption in the form designer, it resizes the TLabel for you. Is there any way I can ... . Anyone know how to do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Best way to check if a Variable is nil?

A common condition that all programs should do is to check if variables are assigned or not. Take the below statements: ... Ptr) and Ptr <> nil? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Increment an integer variable in a loop

I have "i" that is an integer variable and I would like to do a loop that increments the "i" from 40000 ... end; Do you have any suggestions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to copy the properties of one class instance to another instance of the same class?

I want to duplicate a class. It is sufficient that I copy all properties of that class. Is it possible to: loop ... end. // Unit: properties // See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Image from TWebBrowser to TPicture

How to get an image that has been downloaded in TWebBrowser to a TPicture without copying it to clipboard or looking in to cache contents. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to get a snapshot from a webcam with Delphi7 using VFrames(TVideoImage)

I'm using Delphi7 and VFrames (TVideoImage) with this Procedure uses VFrames; .... procedure TForm1.snapshot; ... ; Result blank Bitmap file. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - When to call SetProcessWorkingSetSize? (Convincing the memory manager to release the memory)

In a previous post ( My program never releases the memory back. Why? ) I show that FastMM can cache ... memory manager to release unused memory See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to get Item.LookupData and SelectedValue (as integer) of an FMX TComboBox at runtime?

There is a ComboBox on the FMX Form. It is binded with a datasource (table that has an id-integer and speciality - ... to get it (as integer)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to initialize a custom control?

I want to create my own custom control. Let's say I want to initialize its graphic properties. Obviously I ... variable should fix the problem. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - SuperObject cannot handle null string

Some JSON serializers return null for an empty string datafield, e.g. { "searchtext": null, "moretext": "contains ... does not do the job. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - List index out of bounds whilst deleting items

I solved my problem but I need to know why this problem raised to me ?! I write a project that load file to ... and the second one work fine ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Android Application Version (RAD Studio XE5)

How to get the version of an Android application using the Delphi XE5? I need the "versionName" information. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to define that node of TVirtualStringTree is presented on screen?

It's easy to check that node is visible. But I don't know how to rightly define that node is presented on ... be is there more accurate way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How can I make a a dialog box happen directly after my app's main form is visible?

I have been using TForm's OnActivate event to give me the opportunity to show a dialog box as soon as my app has ... end; Is there a better way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - Using INDY 10 SMTP with Office365

I'm not familar with the INDY SMTP component. I want to send a mail with INDY and Office 365. Here is a ... to use SASL with Office365. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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926 views

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delphi - SetWindowsHookEx for WH_JOURNALRECORD fails under Vista/Windows 7

I am preparing a Delphi module, which sets a hook in a thread to record a macro: FHandleRec := ... or suggest the working solution ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How draw a shadow effect in a complete Bitmap image?

I want know if is possible draw a shadow effect in a complete Bitmap image already existent and after have a ... with the shadow effect? => See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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861 views

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delphi - Inno Setup ComponentsList OnClick event

I have a list of components for my Inno Setup installer, 19 different options, I want to set the OnClick ... is declared as a: TNewCheckListBox See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How to statically link Indy SSL files?

How can I statically link Indy OpenSLL files? AFAIK only ICS allows this but for some weird reason Indy doesn't. ... dependency on the dll's. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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delphi - How can I wait for a command-line program to finish?

I have run program with command-line parameters. How can i wait for it to finish running? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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750 views

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delphi - Difference between adding a unit to the interface or the implementation section

If I have a unit that is filled with constants like... unit AConsts; interface const Const1 : WideString ... in the implementation section. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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delphi - VirtualTreeView - different color of text in the same node

I am attempting to create a view in TVirtualStringTree which will be similar to something like this: In the above ... in C++ Builder though). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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876 views

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delphi - How do I implement an efficient 32 bit DivMod in 64 bit code

I want to use a DivMod function that operates exclusively on 32 bit operands. The implementation in the RTL returns ... // save remainder end; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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delphi - Microsoft Script Control 64 bit?

Is there any msscript control in 64 bit? I google a bit and all say no 64-bit yet The reason that I ... work so any quick replacement for this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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