Delphi execute procedure in thread
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. http://wedelphi.com/t/272514/
Delphi execute procedure in thread
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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. WebSep 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:
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; 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; …
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 … 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.
WebMar 26, 2013 · Create the thread in a suspended state, then set the OnTerminate and finally Resume the thread.. In your test class, define a private boolean field FThreadDone which is initialized with false and set to true by the OnTerminate Eventhandler.. Also, your constructor logic is a bit dirty, as you should not initialize field prior to calling the inherited …
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... frown eyebrowsWebFeb 12, 2024 · 7. With the code like this. procedure TSearchThread.Execute; begin inherited; Synchronize (DoSearch); end; you don't use a worker thread at all - all work is done in the main thread via Synchronize call. That is an example how one should not use threads. In short, your Execute code may look like this: frown eyebrows meaningWebJun 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". giant fabric shaver walmartWebSep 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 … giant face in antarcticaWebMar 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 … frown face characterWebFeb 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). giant faceworm snake skin ragnarokWebDec 17, 2024 · procedure TMyThread.Execute; begin while not Terminated do PerformSomeTask; end; Handling exceptions in the thread function. The Execute … giant face in nepal mountain