I am converting a Forex trading application from KDChart to Qwt and am wondering:
2012-11-21_14h08_18.jpg
  1. How can I hide the horizontal gaps in a candlestick/bar chart (I've marked this with 'Weekend' in the screenshot provided)?
  2. Which 'Qwt*Data' classes are best suited to storing calculations made from the candlesticks samples that are to be plotted over or below the chart the calculation formula need to look back (i.e a Simple Moving Average, or MACD)?
  3. What is the proper way to handle the last candle in the plot, the last candle changes when the markets are open. At the moment I'm using two trading curves, one for finished bars one for open bar. I had to prepend a fake candle to plot the open bar as Qwt wasn't handling a data-set with only one sample properly.


Details about screenshot:
Left chart is KDChart using QIdentityProxyModels to calculate 5 proxy models from the one data-set.
Right chart is Qwt SVN.
They both contain the same samples and time frame.