Printing Problem

[cutie.monkey]

Hi All,

I'm trying to print in linux(Ubuntu 9.10) using this code:

QTextEdit tedprint;
    QPrinter printer;
    QPrinterInfo printerInfo = QPrinterInfo::defaultPrinter();
    printer.setPrinterName(printerInfo.printerName());
 
    tedprint.setText("Test Print Test Print Test Print");
    tedprint.setDocumentTitle ("Printing Sample");
    tedprint.print(&printer);

QTextEdit tedprint;
    QPrinter printer;
    QPrinterInfo printerInfo = QPrinterInfo::defaultPrinter();
    printer.setPrinterName(printerInfo.printerName());

    tedprint.setText("Test Print Test Print Test Print");
    tedprint.setDocumentTitle ("Printing Sample");
    tedprint.print(&printer);

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but it failed to print. I get the warning:

lp: Unsupported format 'application/postscript'!

lp: Unsupported format 'application/postscript'!

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but when i try to print in terminal, lp print.txt, it prints well. How can I fix this? thanks