How to custom page size for printing using QPrinter in Pyside6

kumar80

I need to print bill as part of my app. The bill is of dimensions of width 10 inch and heigh 6 inch. I need to print on this type of paper. This app will run on linux. It will be printed using a dotmatrix printer.

how do I set custom page size
I need to set a dpi of 127x60 dpi. How to set resolution SetResolution method takes only one integer.

When I run the below script it just stuck and nothing happens. It is stuck at Previewer windows Pleast wait.

@Slot()
    def printPreview(self):
        if not self.m_page:
            return
        if self.m_inPrintPreview:
            return
        self.m_inPrintPreview = True
        printer = QPrinter()
        size=QSize(10,6)
        
        printer.setPageSize(size)
        printer.setResolution(8640)
        printer.setPrinterName("kamtest")

        preview = QPrintPreviewDialog(
            printer, QWebEngineView.forPage(self.m_page))
        preview.paintRequested.connect(self.printDocument)
        preview.exec()
        self.m_inPrintPreview = False