<![CDATA[Writing QImage into a buffer always returns error]]>Hi,
I tried to write a QImage into buffer as follows,
@
bool MainWindow::somefunction(QImage &image)
{
QByteArray bytes;
QBuffer buffer(&bytes);

buffer.open(QIODevice::WriteOnly);

if(image.save(&buffer, "JPG"))
{
    qDebug() << "Error in writing to buffer";
    ui->imgLabel->setPixmap(QPixmap::fromImage(image)); // A test write, and it displays correctly in imgLabel
    buffer.close();
    return false;
}
buffer.close();
return true;

}
@
The image contained in QImage is verified using a write to imgLabel, but the above code always retuns error

]]>https://forum.qt.io/topic/24613/writing-qimage-into-a-buffer-always-returns-errorRSS for NodeSun, 12 Apr 2026 22:09:37 GMTMon, 25 Feb 2013 15:38:34 GMT60<![CDATA[Reply to Writing QImage into a buffer always returns error on Mon, 25 Feb 2013 16:29:06 GMT]]>Thank you, I missed the not sign

]]>https://forum.qt.io/post/168416https://forum.qt.io/post/168416Mon, 25 Feb 2013 16:29:06 GMT<![CDATA[Reply to Writing QImage into a buffer always returns error on Mon, 25 Feb 2013 16:23:10 GMT]]>[quote author="ras123" date="1361806714"]
@
if(image.save(&buffer, "JPG"))
{
qDebug() << "Error in writing to buffer";
@
[/quote]That displays an error message when you succeed :)

]]>https://forum.qt.io/post/168414https://forum.qt.io/post/168414Mon, 25 Feb 2013 16:23:10 GMT