Re: [Lazarus] Dragging documented
Felipe Monteiro de Carvalho schrieb: So I couldn't resist to add some criticism about the current LCL implementation. Any comments are welcome :-) I think you should be more specific if you want to do a criticism. In the way you put it one can have no idea what exactly you are taking about. [ ] You have read section 3: LCL Implementation DoDi ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] lNet and several threads
On Thu, 16 Apr 2009 20:01:57 +0200 User usuarioanonimomy...@gmail.com wrote: How I can use several threads with lNet visual library? I need some examples. Best regards! Hello. lNet is inheritedly not thread-safe but it can be used with threads in some ways. When it comes to the visual components, you must remember that the main program loop (handled by the widgetsets) calls the lNet callbacks (OnReceive etc.) so they are all executed inside the main thread no matter where you work with the components otherwise. I'd need some specific use case to give more info. Ales ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] lNet and several threads
Hello, I will explain better my doubt. I need to program a multithread server that processes requests of several clients at the same time. At the moment the server processes requests of several clients one to one by the OnReceive callback: procedure TConnectionHandler.Receive(aSocket: TLSocket); var Message: String; begin if aSocket.GetMessage(Message) 0 then MessagesManager.ProcessMessage(Message); end; I want to change the behavior of the server so that it works with one thread for each client request. Is it possible? Best regards. 2009/4/18 Aleš Katona almin...@gmail.com On Thu, 16 Apr 2009 20:01:57 +0200 User usuarioanonimomy...@gmail.com wrote: How I can use several threads with lNet visual library? I need some examples. Best regards! Hello. lNet is inheritedly not thread-safe but it can be used with threads in some ways. When it comes to the visual components, you must remember that the main program loop (handled by the widgetsets) calls the lNet callbacks (OnReceive etc.) so they are all executed inside the main thread no matter where you work with the components otherwise. I'd need some specific use case to give more info. Ales ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] lNet and several threads
On Sat, 18 Apr 2009 10:36:04 +0200 User usuarioanonimomy...@gmail.com wrote: Hello, I will explain better my doubt. I need to program a multithread server that processes requests of several clients at the same time. At the moment the server processes requests of several clients one to one by the OnReceive callback: procedure TConnectionHandler.Receive(aSocket: TLSocket); var Message: String; begin if aSocket.GetMessage(Message) 0 then MessagesManager.ProcessMessage(Message); end; I want to change the behavior of the server so that it works with one thread for each client request. Is it possible? Best regards. 2009/4/18 Aleš Katona almin...@gmail.com On Thu, 16 Apr 2009 20:01:57 +0200 User usuarioanonimomy...@gmail.com wrote: How I can use several threads with lNet visual library? I need some examples. Best regards! Hello. lNet is inheritedly not thread-safe but it can be used with threads in some ways. When it comes to the visual components, you must remember that the main program loop (handled by the widgetsets) calls the lNet callbacks (OnReceive etc.) so they are all executed inside the main thread no matter where you work with the components otherwise. I'd need some specific use case to give more info. Ales ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus Yes, but you need to do the sends inside the main loop. lNet is a state-machine so everything related to network states needs to be kept in the same thread. You can however start a new thread for each request and process the data there. When you have replies ready to send, push them in some send-buffer (per client) so that the main thread can do the sending then. This requires some sort of messaging between the threads of course. It's not the simplest of methods but it's safe. Doing sending inside the work-threads could cause lNet to run into a state-change race-condition and stop working properly. Ales ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Dragging documented
On Sat, Apr 18, 2009 at 3:41 AM, Hans-Peter Diettrich drdiettri...@aol.com wrote: [ ] You have read section 3: LCL Implementation I had just assumed you would never write the critics to the wiki. The Wiki is the wrong place for criticism. It is a documentation and not a discussion forum or a blog. Could you modify the page to make it more professional looking? thanks Please post criticism in the mailling list instead. thanks, -- Felipe Monteiro de Carvalho ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Why we chose Object Pascal instead
waldo kitty ha scritto: Hans-Peter Diettrich wrote: Graeme Geldenhuys schrieb: I can't agree more... We have had this exact same issue in our company (before I arrived). They hired cheap (inexperienced) developers that caused havoc in the code. They make the GUI seem fine for a while, but underneath the design (if there actually was a design) is totally rubbish and unable to cope with new requirements. Hence the reason I was commissioned to do a total rewrite. That's why neither Cobol nor VB will ever die: they make secure long-term jobs that's also why real coders do not comment their source code ;) We had a guy who'd found an even more clever way. He did comment the code, but his comments reported what the code didn't do, instead of what the code was doing. Sort of an embedded and disguised TODO list, which could easily lead to believe that a feature was implemented, when actually it wasn't! -- Giuliano Colla Whenever people agree with me, I always feel I must be wrong (O. Wilde) ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Why we chose Object Pascal instead
Giuliano Colla wrote: waldo kitty ha scritto: Hans-Peter Diettrich wrote: Graeme Geldenhuys schrieb: I can't agree more... We have had this exact same issue in our company (before I arrived). They hired cheap (inexperienced) developers that caused havoc in the code. They make the GUI seem fine for a while, but underneath the design (if there actually was a design) is totally rubbish and unable to cope with new requirements. Hence the reason I was commissioned to do a total rewrite. That's why neither Cobol nor VB will ever die: they make secure long-term jobs that's also why real coders do not comment their source code ;) We had a guy who'd found an even more clever way. He did comment the code, but his comments reported what the code didn't do, instead of what the code was doing. Sort of an embedded and disguised TODO list, which could easily lead to believe that a feature was implemented, when actually it wasn't! he, he.. !! very funny (ho riso di cuore!) :-D ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] lNet and several threads
User pisze: Which is the simplest method? You can use synapse.It will be good for a multithreaded server if fpc thread support is stable and for just a few clients. It depends on what you want to archieve. Boguslaw ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] lNet and several threads
Ok, you know some examples? Best regards. 2009/4/18 Bogusław Brandys bran...@o2.pl User pisze: Which is the simplest method? You can use synapse.It will be good for a multithreaded server if fpc thread support is stable and for just a few clients. It depends on what you want to archieve. Boguslaw ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] AutoCreate with Forms from a Package (.lpk)
Is it possible i use AutoCreate statement ( and component comunication like datasource-dataset) with a form in a package? One project use a package (.lpk) Forms on project use datamodules components in a package. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] AutoCreate with Forms from a Package (.lpk)
On Sat, 18 Apr 2009 15:45:25 -0300 Osvaldo Filho arquivos...@gmail.com wrote: Is it possible i use AutoCreate statement ( and component comunication like datasource-dataset) with a form in a package? One project use a package (.lpk) Forms on project use datamodules components in a package. At runtime it should already work. It does not yet work at designtime. Mattias ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] ide enhancement - method or cursor location belongs to what class?
Graeme Geldenhuys wrote: Hi, I often have large classes that are bigger than what the source editor can display at once. I'm mainly talking about tiOPF project here. Anyway, I receive patches for large methods and use the IDE 'goto line' command to maybe review or modify a received patch. Again, the IDE only shows me lines of code, I can't clearly see which class I am currently working in. Ctrl+Shift+UpArrow doesn't reveal this info either, because again the class declaration is large and doesn't fit into the source editor all at once. Is there a way to quickly see what class I am currently in without loosing my current position in the source code? I was thinking of maybe some editor shortcut that could display for a few seconds the classname in the top right corner of the editor and then simply fade away. Is this possible? Is there already something similar in Lazarus IDE or another way of know what class I am currently in? There is now revision 19499 you need the mouse (so it isn't as quick and convenient as a key-command driven hint). The Fold-Gutter part now has it's own Pop-up menu. (only at lines that have folding present). And it shows all the nested levels. Best Regards Martin ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
