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Qt-interest Archive, December 2007
QPaintDevice: strange error.

Message 1 in thread

Good morning everyone.

Here's my error,
 
 Im writing C++ using KDE 3.5.7 and KDevelop 3.4.1
 
 my qt application is compiling ok, but when i try to run it
i get the strange message after i construct a qdialog for using with a 
button

"QDialog *Dialog1 = new QDialog(0,"popup", FALSE);
void DialogWidget::button1_clicked()
{
Dialog1->show();
}
"
 
this is the message im getting:
"QPaintDevice: Must construct a QApplication before a QPaintDevice"

Thank you for your time.

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Message 2 in thread

Mystical Groovy wrote:
> this is the message im getting:
> "QPaintDevice: Must construct a QApplication before a QPaintDevice"

Did you create a QApplication before your your Dialog? 
Do you have a QApplication at all? 
Usually, it's the first thing created in main()

Cheers,
Peter

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