In QPrintPreviewDialog slot is not being called by the signal--- paintRequested(QPrinter *printer)

[Phadnis]

Hi,
In the constructor I have written like this,

m_Printer=new QPrinter;
    m_Preview=new QPrintPreviewDialog(m_Printer);
    connect(m_Preview,SIGNAL(paintRequested(QPrinter*)),this,SLOT(PrintPreviewSlot(QPrinter *)));

In the SLOT........

void Printer::PrintPreviewSlot(QPrinter *printer)
{ qDebug()<<Q_FUNC_INFO;
}

In some other function i am setting parameters of the QPrinter obj like this,

{
    m_Printer->setOutputFileName("Reciepts");
    m_Printer->setFullPage(false);
    m_Printer->setPageOrientation(QPageLayout::Landscape);
    m_Printer->setPaperSize(QPrinter::A5);
    QPrintDialog printDialog(m_Printer);
  if (printDialog.exec() == QDialog::Accepted) {
painter=new QPainter;
    painter->begin(m_Printer);
some text-------
    painter->end();
}
m_Preview->exec();  //obj of print preview within this function
}// end of func

I am getting blank preview why ???
With Thanks
Phadnis

[mrjj]

@Phadnis said in In QPrintPreviewDialog slot is not being called by the signal--- paintRequested(QPrinter *printer):

connect

Does it return true?

[Phadnis]

Hi mrjj,
qDebug()<<connect(m_Preview,SIGNAL(paintRequested(QPrinter*)),this,SLOT(PrintPreviewSlot(QPrinter *)));
is true
With Thanks,
Phadnis

[mrjj]

@Phadnis
Ok. super.
Then my guess is you do something unexpected with the painter. :)

This works

void MainWindow::on_pushButton_clicked()
{
    QPrinter printer(QPrinter::HighResolution);
    QPrintPreviewDialog preview(&printer, this);
    preview.setWindowFlags ( Qt::Window );
    connect(&preview, SIGNAL(paintRequested(QPrinter *)), SLOT(printPreview(QPrinter *)));
    preview.exec();


}

void MainWindow::printPreview(QPrinter *printer) {

    QPainter p(printer);
    p.drawText(500,500,"U WIN");

}