how I make reports in Qt like as crystal reports in .net and export to pdf

[pkj]

You might look at NCReports too. Or KDReports. But since they are based QPainter they lack inherently the capability to export in excel formats or even odf formats. Then they have not integrated qwt, so for graphs, you will have to create it and use it as image. As Chris rightly said, definitely not out of the box. You may want to look to java for this if data is to pulled from some database.

[aliks-os]

Try QtRPT with QtRptDesigner
https://sourceforge.net/projects/qtrpt/