I'm not sure how you're communicating between your input stream class and the progress dialog. I'd think you'd want the input stream to notify the dialog as it supplies data to the parser. (I'd probably have it send notifications when certain milestones are reached, such as another percent complete, rather than every time it supplies a chunk of data.) If you're implementing the input source and its associated input stream, you're responsible for keeping track of the position. Maybe you're deriving from BinFileInputStream and calling its curPos() and/or getSize() members?
I think you'll need to provide a little more detail. Small, reasonably complete code samples are often helpful. -----Original Message----- From: Dennis Endt [mailto:[EMAIL PROTECTED] Sent: Thursday, July 24, 2008 3:05 PM To: [email protected] Subject: Re: Xerces and QProgressDialog Hi, I used your Proposal to implement my QFile Object over which I tried to read out the actual Position in File. So I connected my XML Class with my Main Class in the hope, to figure out the data. But unfortunately the pos is always 0, regardless of which part of my code I set the signal call. Is there an extra postion where the Xerces DomBuilder and the Xerces SaxParser read out the file? Jesse Pelton schrieb: > You could try implementing an InputSource. It should be able to keep track > of how much data it has provided to the parser. Assuming it knows the total > amount of data available, you can make a rough estimate of processing > progress. I'm not sure what size chunks of data the parser will request, but > if your files are big enough that a progress dialog is useful, the chunk size > will probably be small enough relative to the total size that progress will > be reasonably smooth. If not, I think InputSources can safely return fewer > bytes than are requested. This may impose a small performance penalty, but > you may think it worth the tradeoff for a better user experience. > > > -----Original Message----- > From: Dennis Endt [mailto:[EMAIL PROTECTED] > Sent: Wed 7/23/2008 9:18 AM > To: [email protected] > Subject: Xerces and QProgressDialog > > Hi, > > I`m using Xerces and QT and now I´m trying to implement a > QProgressdialog to display the progress of reading a xml file. > > Has anyone an idea how to get the progress for updating the progress bar > and how to set the maximum value? > > I`m looking for a solution for a SAX and a DOMBuilder parser. > > Greets, > Dennis >
