Thanks Tomasz, all good now. Yeah from the performance of CTRL+C it's not too difficult to tell it's not using LVM_GETITEMTEXT. :) Your copy routine is blisteringly quick.
All I do now is send the following key messages: 1. CTRL+C - to Time and Sales List control. 2. CTRL+A, CTRL+V, CTRL+S - to timeandsales.log document open in TextPad. Then I just read the timeandsales.log file back in through the plugin for access in AB. Roundabout way but is plenty fast enough for realtime access. Regards, Julian. --- In [email protected], "Tomasz Janeczko" <gro...@...> wrote: > > Ctrl+C from Time&Sales does not use LVM_GETITEMTEXT at all. > This list is owner data and has its own direct buffer that is 2 orders of > magnitude faster than windows messages. > That is internal AB structure not exposed by any API. > > Best regards, > Tomasz Janeczko > amibroker.com > ----- Original Message ----- > From: "Julian" <juliangoods...@...> > To: <[email protected]> > Sent: Friday, July 17, 2009 4:54 PM > Subject: [amibroker] ADK SendMessage > > > > I'm working on my first AFL plugin using Dev-C++. I'm a programmer by > > trade, but not a Windows programmer. > > > > Anyway, after three days of brutal toil, I've managed to access the Time & > > Sales window. However to read the contents, I'm using > > the SendMessage LVM_GETITEMTEXT function which is really slow. I don't > > fully understand the windows messaging system yet, so don't > > get where the performance issue is. Something to do with them being queued? > > > > 40,000 SendMessage requests takes around 1.6 seconds which is way slow and > > that's only for 1 column of data. I can read and > > process 4 columns of the same data from a text file in around 50ms. > > > > For realtime, where you'd only be reading maybe 500 records at a time, > > there's 4000 SendMessage calls and even that takes 100ms. > > As I don't understand Windows very well, is there a faster way of doing > > this? Can I get a reference to the actual class itself? > > > > When I copy (CTRL+C) from the Time & Sales window, it's so quick it's > > barely noticeable on the cpu graph. It'd be quicker for me > > to send a CTRL+C key message to the window and then process the data from > > the clipboard, which is a viable option if there's > > nothing else. > > > > Hopefully there's some Windows programmers around here. > > > > Thanks, > > Julian. > > > > > > > > ------------------------------------ > > > > **** IMPORTANT PLEASE READ **** > > This group is for the discussion between users only. > > This is *NOT* technical support channel. > > > > TO GET TECHNICAL SUPPORT send an e-mail directly to > > SUPPORT {at} amibroker.com > > > > TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at > > http://www.amibroker.com/feedback/ > > (submissions sent via other channels won't be considered) > > > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > > http://www.amibroker.com/devlog/ > > > > Yahoo! Groups Links > > > > > > >
