pcsoft.us.windevCopyright 2026, PC SOFT30 Jan 2015 14:27:00 Z27 Jan 2015 17:21:00 ZThere is a main UI thread. It starts 2 "subthreads". One is used to show Motion JPEG on Image control of UI thread and other is used for getting some other information and displaying it on UI too. Below sample code: Main thread (UIWindow) Event(ProcessImageFrame,UIWindow..Name,"ProcessImageFrame") Initialize Code: (started when window is opened) ThreadExecute("Thread2",threadNormal,UpdateServerInformation) BTN_Play_Click (started when button is clicked) ThreadExecute("Thread1",threadNormal,ProcessMedia) PROCEDURE ProcessImageFrame(uMessage,wParam,lParam) // code for create Image and display it Multitask(-100) ThreadSendSignal("Thread1") Thread 1 PROCEDURE ProcessMedia WHILE True // reading HTTP response with image raw content PostMessage(Handle(UIWindow),"ProcessImageFrame",Content,Length) ThreadWaitSignal() Multitask(-100) END Thread 2 PROCEDURE UpdateServerInformation WHILE True // getting server information // display on UI Multitask(-100) END The problem is when I click button and "Thread 1" is executing ("Thread 2" is already working") then "Thread 2" is stopped and no server information is updated. The main thread works only with "Thread 1", i.e. data is read and posted to main window via PostMessage, then this thread waits for a signal from UI thread. In the main thread those data is prepared to display and is displayed and send signal to "Thread 1" to continue... And so on. "Thread 2" is silent :( When "Thread 1" is stopped then "Thread 2" continue its work. Could someone help me? Or give advise how to work with threads correctly? Thanx.30WEBDEVen_UShttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads/read.awpmoderateur@pcsoft.fr (El moderador)webmaster@pcsoft.fr (El webmaster)guestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50206/read.awp30 Jan 2015 14:27:00 ZHi Arekusei, I'm very glad for you that it is now working! Now I want to recap a make a point clear: - Both of your thr…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50206/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50206/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50203/read.awp30 Jan 2015 11:49:00 ZHi, Alexandre. I re-read all you wrote me and you was right ponting me on incorrect threading mode. I've read the documentati…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50203/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50203/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50189/read.awp29 Jan 2015 14:34:00 ZHi Arekusei, There is only one thing that makes me uncomfortable about your code and it is the use of a class object. Here…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50189/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50189/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50172/read.awp29 Jan 2015 08:18:00 ZHi Aleandre. Here it is as it looks: End of initialization WIN_MS ProcessServerUsage() // automated procedure BTN_Play…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50172/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50172/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50164/read.awp28 Jan 2015 17:32:00 ZHi Arekusei, I'm sorry but I can't help you above that since I do not know how your code is organized (threads, non-thread) a…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50164/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50164/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50163/read.awp28 Jan 2015 17:12:00 ZAlexandre, thank you for your help! I've used your example and create 2 automated procedures running in threads. The single d…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50163/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50163/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50161/read.awp28 Jan 2015 16:08:00 ZHi Arekusei, Read my other posts, this will answer your question. Test the above code, this will also answer your question ab…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50161/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50161/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50160/read.awp28 Jan 2015 16:03:00 ZQuote Alexandre Leclerc Please, take the time to do a very simple test project. Ok. I will try this code. How can I pass pa…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50160/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50160/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50157/read.awp28 Jan 2015 15:51:00 ZHi again Arekusei, Quote How?! Imaging... a window... on windows message loop... When I speak of one thread, I do not s…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50157/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50157/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50156/read.awp28 Jan 2015 15:41:00 ZHi Arekusei, You see, some code in your code was causing issues. So my guess is that some other code is also causing issues. …https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50156/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50156/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50155/read.awp28 Jan 2015 15:38:00 ZHi Arekusei, Please, take the time to do a very simple test project. Create an empty form, put a Multi-Line Text control in i…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50155/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50155/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50134/read.awp28 Jan 2015 09:58:00 ZLets' continue.. I created an automared procedure UpdateServerData that is running in a thread. PROCEDURE UpdateServerData() …https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50134/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50134/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50133/read.awp28 Jan 2015 09:40:00 ZWell.. I leave only main thread and the secondary thread. Secondary thread read data and PostMessage to main window to display p…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50133/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50133/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50129/read.awp28 Jan 2015 08:46:00 ZHi Alexandre. I don't understand why you don't understand :) Quote The same thread is doing the HTTP request and also p…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50129/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50129/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50125/read.awp27 Jan 2015 22:04:00 ZHi Arekusei, The same thread is doing the HTTP request and also processing the data, then sends an image to the main applicat…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50125/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50125/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50124/read.awp27 Jan 2015 21:57:00 ZHi again Arekusei, Ok, now I understand better where you are going. I still do not get how your processes are split. Is one t…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50124/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50124/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50123/read.awp27 Jan 2015 21:41:00 ZBtw, below a sample code on C# (cut). Here it is the example of what I need. // create and start new thread thread = new Thre…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50123/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50123/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50122/read.awp27 Jan 2015 21:33:00 ZQuote Alexandre Leclerc The http result can be read in the same thread that makes the request. Maybe I explain badly... My …https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50122/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50122/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50117/read.awp27 Jan 2015 19:29:00 ZHi Arekusei, The http result can be read in the same thread that makes the request. If you want, you can indeed call another …https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50117/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50117/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50116/read.awp27 Jan 2015 19:25:00 ZI did a presentation for WXLive on October 10th of 2014 where I demonstrated multithreading with UI updates using the example of…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50116/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50116/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50115/read.awp27 Jan 2015 19:01:00 ZQuote Alexandre Leclerc I think that all this is a bit complicated for a simple task. You could use only one thread. In that…https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50115/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50115/read.awpWork with threadsguestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50114/read.awp27 Jan 2015 17:46:00 ZHi Arekusei, I think that all this is a bit complicated for a simple task. You could use only one thread. In that thread you …https://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50114/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/50111-work-with-threads-50114/read.awpWork with threads