Delphi execute procedure in thread

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August undefined, 2024

WebMar 7, 2012 · Set the thread's FreeOnTerminate property to True, so that there is no need to free the thread when it finishes. The Execute procedure must be overridden in the extension class of TThread or else an "Abstract Error" will result. To create the extension, choose the File > New > Other > Thread Object menu. Code WebFeb 23, 2015 · See above: The answer is yes. However, this second question simply does not make sense since it assumes that Sleep () is always and by necessity never the proper way which, as is explained in the answer to #1 above, is not necessarily the case. Sleep () may not be the best or most appropriate way to program a delay in all scenarios, but …

Delayed execution in Delphi - Stack Overflow

WebDec 17, 2024 · procedure TMyThread.Execute; begin while not Terminated do PerformSomeTask; end; Handling exceptions in the thread function. The Execute … WebApr 7, 2024 · Viewed 141 times. 1. Basically, what I need to do is this: Show the user a "Please wait ..." form (lets call it waitForm) on top of the main form, execute http methods (get and post), and close the waitForm after I get the http response. Since the http post method communicates with a physical device, it takes a while for the response to return ... オーウエル

Delphi unit test for a TThread with FreeOnTerminate = True

WebJun 11, 2024 · When anonymous thread Execute method starts, it will first attempt to increase the count. If it cannot do that, it means countdown event is already signaled and thread will just terminate without calling its anonymous method, otherwise anonymous method will run and after it finishes count will be decreased. WebMar 10, 2012 · Delphi 7: How to implement multi-threading? I have a TButton in the main TForm. When user click the button, it will execute the below process: begin Process_done := FALSE; Process_Result.Clear; cmdProcess.CommandLine := #34+AppPath+'getdata.exe"'; cmdProcess.Run; Repeat Application.ProcessMessages; … オーウエル yahoo

delphi - Queue procedure call on same [main] thread - Stack Overflow

multithreading - How to terminate anonymous threads in Delphi …

WebFeb 15, 2005 · 编写了一个NT服务程序，想该服务根据系统时间判断是否从oracle数据库中导入到Sql Server。服务程序代码如下 unit Unit_main; interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls... http://scalabium.com/faq/dct0050.htm pantone 7036WebJan 28, 2024 · Why did I do it? consider this test case where I need to terminate the thread if some condition in the Timer event (note I switch to FreeOnTerminate := True and let it auto free): procedure TForm1.FormShow (Sender: TObject); begin FTimerThread := TTimerThread.Create; FTimerThread.Interval := 5000; FTimerThread.OnTimerEvent := … オー-ヴァル

"WebDec 13, 2024 · The simplest way is using timer. Let you create DelayTimer with needed period set and Enabled = False on the form in design time (you can also create it dynamically). Assign event handler for it: procedure TFormXX.DelayTimerTimer (Sender: TObject); begin DelayTimer.Enabled := False; // works only once StartLoop; end; " - Delphi execute procedure in thread

Delphi execute procedure in thread

What is the best way to program a delay in Delphi?

http://wedelphi.com/t/272514/ WebJun 18, 2024 · Execute (procedure (i: integer) begin CreateThumbs (JPGList [i]); end); Everything works OK, except for I cannot get the status bar to display the progress. I use a global variable for the count of the produced thumbnails that is incremented (TInterlocked.Increment) in "CreateThumbs".

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WebFeb 28, 2015 · Run function inside a thread and get result. I have 2 functions that can tell me if a file is in use by checking if the size of the file grows.In order to work I need to use a delay of 5000ms between each size gathered from the same file.This is OK but it blocks my main thread so I have to put the functions inside a thread. Here are the ... Web{ Make a call to this procedure in your project source immediately before the first call to CreateForm. That should ensure it is after the Application.Title assignment that can muck up the logic. If you haven't set an application title yet, then do so to ensure this works } procedure EnsureSingleInstance (MyGUID : string) ; implementation uses

WebSep 9, 2024 · Execute action after form is shown. Lazarus doesn't support something like form OnShown/OnShowAfter event where custom code can be executed after form was shown. This is useful mainly to do run custom code after main form is shown. It would serve as kind of one time OnApplicationStart event. In would be useful for example for loading … WebFeb 17, 2024 · Note that the last synchronize doesn't have to be a real procedure. You can just call synchronize to a dummy-procedure at the end of the TThread.Execute like Synchronize(DummySync) . The queue is FIFO so the thread will wait until all calls in the queue are processed (including the empty dummysync).

WebMar 11, 2013 · Further issues in the new code: Instead of leaking, threads that terminate by themselves can get double-freed. Since the anonymous method has no reference to the thread object, it cannot check the Terminated property, so calling Terminate does nothing. (Calling Free would call Terminate anyway.) There's no reason for a thread-safe list … WebDec 4, 2024 · We don't need to process more requests at once, but I must use the libraries and DB connection from the main thread. The Delphi version is Seattle, the Indy version is 10 (internal). As I know the IdHTTPServer uses threads for connections - as formerly.

WebSep 13, 2024 · Not sure if this is what you are looking for, but if you are on a recent Delphi version these Postpone methods may come in handy. They execute AProc in the main thread after applying an optional non-blocking delay.. uses System.Threading, System.Classes; procedure Postpone(AProc: TThreadProcedure; ADelayMS: Cardinal …

WebJan 23, 2014 · To use a thread object in your application (and to create a descendant of Classes.TThread ): File > New > Other > Delphi Projects > Delphi Files > Thread Object. In the New Thread Object dialog box, enter a class name, such as TMyThread. Check the Named Thread check box and enter a thread name (VCL applications only). Click OK. pantone 703cWebSep 18, 2012 · 'MyThread' does not run. I do not know whether the problem happens on 'DataTransferServiceStart' procedure. I guess the 'DataTransferServiceStart' procedure does not execute. IDE is Delphi XE. Please help me, thank you very much. Thread's Unit: pantone 710 cWebDec 17, 2024 · The Execute method is your thread function. You can think of it as a program that is launched by your application, except that it shares the same process. Delphi Power . Marketing ... Yes, you can call a function inside the synchronize procedure of the Thread class in Delphi. The method you use to do this will depend on the type of … オーウエルファイナンスWebMar 11, 2024 · You need to declare a couple of counters that you increment every time the timer procedure fires. For example: type TForm1 = class (TForm) .... private FCounter1: Integer; .... end; Then when you want to start counting you initialise the counter and start the timer: FCounter1 := 0; Timer1.Enabled := True; オーウェル 1984 翻訳WebOct 28, 2024 · Description. Provides an abstract or pure virtual method to contain the code which executes when the thread is run. Override Execute and insert the code that … pantone711cWeb1 day ago · 1. New contributor. 1. Make sure you are building in debug configuration. Also go to Project > Options > Delphi Compiler > Compiling > Debugging and make sure there is a checkbox next to "Use debug .dcus". – Andreas Rejbrand. 27 secs ago. Add a … オーウエルリブレットWebMar 23, 2015 · If you just want to wait until it is finished, you can call WaitFor (or WaitForSingleObject). This is possible, because the handle for the thread is already created in its constructor, so you can call it right away. Also, I set FreeOnTerminate to true on these threads. Just let them run and free themselves. pantone 70 c 15m