Recent questions tagged Delphi

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i have few webpages in MySQL database, that I want to show as "slideshow" on my Delphi (7) form. I am trying to ... not only a piece of 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 - Need help with deriving from TImage (to store the path to image's file)

I have an Object Inspector, just like Delphi's, which I show at run-time to allow the user to change properties ... time, and award it to them 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 convert a record from host to network byte order (big endian)?

I have a record: Tconnecting = record var a: int64; b: integer; c: integer; end; which I need send to server ... ); (this is in PHP) 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 - How do I determine the height of a line of text in a TMemo programmatically?

I've got a TMemo, and I want to always make it exactly high enough to display the number of lines it contains. ... know how to do this right? 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 - ProcessMessages and use of application

I need to know if use of ProcessMessages that allow me to use entire application is legal. Pseudo code: Main thread ... works. And if its safe. 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 - GetAsyncKeyState "strange" behavior

I have 2 simple forms, Form1 and Form2 (Delphi 7). Form1 opens Form2, and there I wait for a specific key ... going on (and how to solve)? 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 - TSQLQuery only streams first 1MB of data correctly for large strings

(see Edit #1 with stack trace and Edit #2 with workaround at end of post) While troubleshooting TSQLQuery. ... workaround for this soon. 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 - Automated Log In (webBrowser)

I am trying to log in (to perform some routine tasks) into a webpage (www.soccerproject.com) and i am unable ... to be sure). Thanks in advance 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 - Firemonkey TControl subclass cannot draw on component

I want to try to create a firemonkey visual component and I have seen online that TControl gives the basic ... Paint event but still nothing. 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 do I include a file in a TIdMultiPartFormDataStream for use with Indy IdHTTP1.Post?

What is the correct code that I need to use to send one or more files of any type along with other ... finally MIMEMap.Free; 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 xe2 - How to create splashscreen in FireMonkey?

I need to create a splashscreen while my FMX program is launching. The following code from VCL does not ... in Delphi XE2 FireMonkey project? 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 - consuming web service with authentication allways give message Authentication required

I try to use consume one web service with Delphi 2010. This web service is on port 8000 with authentication. I ... Do I make something wrong ? 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 correctly stream a TCollection property of a subcomponent, e.g. the Columns property of an embedded TDBGrid

I've been trying to boil down to an MCVE some code the author of another q sent me to illustrate a problem with a ... 1, 'One']); 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 - How to pass parameters to an ADOQuery object?

I am using ADOQuery in Delphi 7 and Oracle. I am getting error while passing parameters to ADOQuery. I ... incomplete information is provided. 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 - Coinitialize has not been called error message

I am in the process of coding a console application that will create a firewall exception for my main app called ... Thank you so very much. 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 is OmniThreadLibrary limited to 60 threads when .Net's limit is 32768?

I was recently comparing OmniThreadLibrary and ThreadPool that is in .NET and I found that Omni is much more restricted ... . Why such a limit? 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 is the Compiler warning that variable may not be initialized?

I am getting a compiler warning I don't understand: procedure Test; var Var1: Integer; begin while True ... without Var1 being initialised? 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 - Tidhttp.connectTimeout not working!

So i'm using tidhttp to make post requests. when i try to set connectTimeout whatever period of time it ... get exception. Thanks in advance! 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 - access all elements of a record using RTTI

I want to dump a complex / long record into a memo for debugging purpose TmyRecord = aValue : String aNumber : Real; ... to a memo or ..... 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 - disable automatic changing of keyboard layout in DbGrids.pas in VCL

I use ActivateKeyboardLayout(HKL_NEXT, KLF_ACTIVATE); to load Persian keyboard layout using Delphi XE2, But sometimes I ... of keyboard layout? 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 does my program crash when I destroy a button in its own OnClick handler?

I tried a script from a web site I run http://www.delphi-central.com/runtime.aspx and succeed. private { Private ... could this happen ...??? 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 mute the sound of my application?

I have an application which has sound. I have a global property to mute the sound. The problem is, there's so ... no idea what calls to make. 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 does Format reject procedure address arguments starting with XE4

Consider this program: {$APPTYPE CONSOLE} uses System.SysUtils; procedure Foo; begin end; type TProcedure = ... address of a procedure? 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 properties instead of fields in class methods of the same unit is a bad practice?

I have declared a private field and a public property for a given class. From other units I can access the ... read and write access to it? 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 - 0x0eedfade kernelbase.dll faulting module in d7 windows service

I have written a windows service in D7. It worked perfectly ok until today when it doesn't want to be launch. In ... is ok. ... Any ideas? 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 - simple text file encryption based on a key

I am trying to implement a simple text file encryption technique and I am using the following code to do so. The ... ; OutMS.Free; 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 - Sending commands directly to Zebra EPL

I am trying to send commands directly to a Zebra TLP2844 printer. I followed the suggestion made here and my ... looking to get things printed? 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 show data at Fast Report in 3*3 grid format?

I want to display data from table (column :- ID) at FastReport in Grid format as shown below. Suppose there ... 3 grid but shows data continuou See Question&Answers more detail:os...

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

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