Pass string to print slot (QPrintPreviewDialog)

[Rafaelpsmed]

Hi

I have 2 qplaintextedit with 2 buttons. Each button will pass the text from one qplaintextedit to a string x and call the function printreport and the then print (thats the idea at least)
I'm trying to implement a QPreviewDialog like this:

void::mainwindow::printreport(QString x)
{
    QPrinter printer;
    printer.setPageSize(QPrinter::A4);
    printer.setOrientation(QPrinter::Portrait);
    printer.setPageMargins (10,10,10,10,QPrinter::Millimeter);
 
    QPrintPreviewDialog preview(&printer);          
 
           connect(&preview, SIGNAL(paintRequested(QPrinter *)),this, SLOT(printpage(QPrinter*, QString x)));
           preview.showMaximized();
               preview.exec();
 
}
 
void mainwindow::printpage(QPrinter *printer, QString x)
{
    QPainter painter(printer);
 
       QRect reccomum(0,0,720,30);
 
       painter.drawText(100, 100, "Hello World! 123");
       painter.drawText(reccomum,Qt::AlignLeft,x);
}

void::mainwindow::printreport(QString x)
{
    QPrinter printer;
    printer.setPageSize(QPrinter::A4);
    printer.setOrientation(QPrinter::Portrait);
    printer.setPageMargins (10,10,10,10,QPrinter::Millimeter);

    QPrintPreviewDialog preview(&printer);          

           connect(&preview, SIGNAL(paintRequested(QPrinter *)),this, SLOT(printpage(QPrinter*, QString x)));
           preview.showMaximized();
               preview.exec();

}

void mainwindow::printpage(QPrinter *printer, QString x)
{
    QPainter painter(printer);

       QRect reccomum(0,0,720,30);

       painter.drawText(100, 100, "Hello World! 123");
       painter.drawText(reccomum,Qt::AlignLeft,x);
}

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This doesn't work. The printpreview dialog shows a gray area. I get this error message:
QObject::connect: No such slot mainwindow:: printpage(QPrinter*, QString x) in ..\Receitas\mainwindow.cpp:432
QObject::connect: (receiver name: 'mainwindow')

When i delete QString x both from void mainwindow:: printpage and from the signal:slot (that is: leaving only SLOT(print(QPrinter*)) the page is created, but without the text from the qplaintextedit.

My question is: how can i implement this printpage slot passing the string x?

Thanks in advance.