出口手续往往是一些数据需求，学习文本导出到今天pdf文件。主要用于QPrinter，QPainter

TextEditToPdf::TextEditToPdf(QWidget *parent, Qt::WFlags flags)	: QDialog(parent, flags){	ui.setupUi(this);	int ret = connect(ui.m_pExportBtn,SIGNAL(clicked()),this,SLOT(exportSlot()));}TextEditToPdf::~TextEditToPdf(){}void TextEditToPdf::exportSlot(){		QTextDocument  textDocument;	QPrinter printer(QPrinter::ScreenResolution);	printer.setPaperSize(QPrinter::A4);	printer.setPageMargins(30,30,30,30,QPrinter::DevicePixel);	printer.setOutputFormat(QPrinter::PdfFormat);	printer.setOutputFileName(QString("11") + ".pdf");	QPainter painter( &printer );	QFont font;	font.setPixelSize(15);	painter.setFont(font);	QTextOption textOption( Qt::AlignCenter);	QPen pen;	pen.setColor(Qt::black);	pen.setWidth(1);	painter.setPen(pen);	int paperWidth = printer.width();	int paperHeigth = printer.height();	painter.drawText( QRect(QPoint( 30,30),QPoint(paperWidth - 30,paperHeigth- 20)),ui.m_pTextEdit->toPlainText (),textOption);	textDocument.print(&printer);}

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