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I tried doing something similar to this manually before I had buffered the complex chart stuff (it was horribly slow) - something like this: QPainter lets you specify a simple or complex region to repaint, so I made one complex region using each of the previous and current crosshair locations...

1) The code comes out wrong here, some of the braces are not showing up. The forumla for the constant-volumebar formula has a small correction in the 'if (volumecount)' block - the date/time needs to be updated - its a new bar, so the new date/time is needed. 2) I am in the process of...

Thanks dcraig. Changing gears, I normally don't post charts here but I thought this one was kind of interesting. This morning, the upper channel on NQ held, so we'll see how the other futures react - I think a reversal now of some kind is likely. ER2 obviously has been a monster lately so...

You probably already know this but temporarily install another hard drive, and load the newly saved image back onto that drive to make sure the image works. Maybe you have already done this. Just wanted to make sure.

Actually, I agree (about the readability of the comments in the above fragment) - I only added the comments in hopes that a reader that is interested in constant volume bars might find it easy to follow line-by-line how the small routine works - guess maybe it was a bad idea. :) So far, I am...

There is really only one scenario under which I will consider making this Open Source (it is GPL, non-commercial, but private for now - if I create a good idea that I want to commercialize, I will have to scrap this work and start from scratch after buying a 'dear' license - look up Trolltech's...

If for some reason, someone out there was interested in creating constant volume bars, maybe this code fragment could help you. I am about 90% sure that it is 99%-100% right. I've read that many software vendors do not create their volume bars right. I'll definitely come back to this to...

I wrote this big long cynical rant about the futures industry in general, but rather than focus on what cannot be changed (pragmatically), it is best to focus on what we can control. The two profiles are pertinent to traders who are trying to compete against the multi-billion dollar interests...

Most video card manufacturers are going to populate their higher end (read: faster) cards with more memory. Maybe you don't need the extra memory for financial applications, but the faster GPU will provide increased 2D performance. You can get a nice low-to-mid-range multi-head...

No, they just replace the standard discount. You can certainly try, though. I am 90% sure that those specific coupons (for the Inspiron) are not stackable.

make sure you get the coupon and save some extra $$$ http://www.xpbargains.com/dell_coupons/ in this configuration, you'll probably use the $750 off $1999+ Inspiron notebook.. edit: I have checked out Dell's WUXGA 1920x1200 17" notebook screen - very small pixels - you really have to see...

Ok, I am starting a new thread for my Qt 4 based (http://www.trolltech.com/products/qt/index.html) chart project. The old thread was becoming a bit cluttered with extra-wide code fragments as well as unnecessarily redundant progress screenshots. Ultimately, the software will not just be for...

What's your preference for the displayed date format? As shown, it is MM/DD/YYYY, i.e. 01/03/2005 Could do MM/DD/YY, i.e. 01/03/05 Maybe MM.DD.YYYY instead of slashes Or Mon-DD or Mon-D, i.e. Jan 3 or Jan 15 I don't want to make it an option as code bloat is already setting in. <img...

Do you mean simply saving a .JPG or .PNG, etc., image? Most do this. This one is most interesting to me. I thought about this extensively when using eSignal. (I wasn't happy with how the trendlines would move around when new data came in, much less not maintain accuracy throughout changing...

1) The crosshairs have some transparency in their QColor, which is a cool feature. Maybe this can be a setting. Maybe I should add a 'crosshairs snap' feature so it is held to tick size/bar index. This could be useful for drawing - just toggle snap on and off - maybe even have something...

can't wait to see which economist is quoted in a newspaper as having used the word 'fucked'. :) edit: but they couldn't use the 'D' word. hehe

<img src="http://i2.photobucket.com/albums/y12/e647g9i/14.png"</img><br> still plenty to do...arghhghgh.. i'm almost done with the price area algorithm (looks good for all font sizes and price configurations) but the griddots and time algorithms both need overhauls. for the price algorithm...

While this may be true once applications are loaded, in general, hard drive speed is the biggest bottleneck with today's computers. You should see general improvement using a 10k RPM drive with any type of disk-related activites - booting, copying/moving files, etc. The latest Raptors are much...

I remember reading that someone programmed a custom addon for Tradestation that does just that - allows placement of limit/stop orders directly on the chart.

Rumor has it that the platform known as 'Chart 0.009b' will have this feature, and it will be very intuitive. Seriously though, I think Realtick does something like this. I haven't used Realtick in some time, but if I remember right, it has a feature where the trade window for a given...