预览一直在窗口正中间而且挺小的字都看不清 我想放大预览界面
部分代码
QPrinter *printer=new QPrinter(QPrinter::HighResolution); printer->setPaperSize(QPagedPaintDevice::A4); printer->setPageMargins(QMarginsF(30, 30, 30, 30)); printer->setResolution(300); printer->setOutputFormat(QPrinter::PdfFormat); printer->setOrientation(QPrinter::Portrait); Report_PDFPreview=new QPrintPreviewWidget(printer,this);//预览 connect(Report_PDFPreview,SIGNAL(paintRequested(QPrinter*)),this,SLOT(CreatePDF(QPrinter *))); verticalLayout_Report_Right_Preview->addWidget(Report_PDFPreview);