def savePdf(self,fileName):
pt = QPdfWriter(fileName)
# pt.logicalDpiX
pt.setPageSize(QPagedPaintDevice.A4)
# print('resolution',pt.resolution())
pt.setResolution(10000)
# print('resolution',pt.resolution())
textDocument = QTextDocument()
textDocument.setHtml(self.pcontext.thtmlGet())
textDocument.print_(pt)
textDocument.end()
print('pdf creat = ',fileName)
