Kind Attention: Mr. Uwe.

Hi friends,
I am having a Qt5 based application in which I use Qwt6 for plotting data (points and symbols - total not more than 2000). My requirement is to add a moving map (S-57/ 63 Charts, shapefile based) to that application and overlay the data (those points and symbols) on it with zooming and panning facility.

My question is: Should I use Qwt controls or Qt's GraphicsView Widgets for implementing this. And also, I am new to handling S-57/63 charts, do they need any extra libraries for drawing them on Qt/ Qwt widgets? Is Qt/ Qwt sufficient for implementing this? Please put some light on this issue.

Question for Mr. Uwe: In an earlier post, you have talked about Qwt based GIS application.
I've written a complete GIS application with Qwt, so displaying a map should be possible too. How to do it depends on the type of data you want to display. So how does the data of your map looks like ?
Is your GIS application open source or proprietary? If it is open source, can you please share it with our Qt users? What I mean to ask this question is to why to re-invent the wheel.

Thanks in advance.

swamy.