Set Window Icon in QMessageBox

[MTOLANI]

Hi,

I would like to set an icon for the window of QMessageBox
Below is the code :

QMessageBox::StandardButton popupYesNoBox(QWidget *parent, const QString &message, const QString &title)
{
  QMessageBox qmsg;
  //qmsg.setWindowIcon(QIcon(":/image.png"));
  return qmsg.question(parent, title, message, QMessageBox::StandardButtons(QMessageBox::Yes | QMessageBox::No));

}

When I uncomment the second line, it says "cannot convert from 'const char [12]' to 'QIcon'
Source or target has incomplete type"
I am using the same icon, in FileDialogs its working fine.

Kindly help.

[JonB]

@MTOLANI
You're not getting the right overload of the QIcon() constructor.

In any case (not that I know about this) the examples I see for .png convert it to QPixmap first. This is supposed to work:

QPixmap pixmap = QPixmap(":/image.png");
qmsg.setWindowIcon(QIcon(pixmap));

[MTOLANI]

Hi,

No QPixelMap doesn't work.
I am calling the above function popupYesNoBox from another class with QWidget *parent as NULL.

auto response = nw::popupYesNoBox(NULL, tr("Previous copy exists "
                                                   "\n\n Select No"
                                                   "\n\n Select Yes"), tr("Backup file "));

Is there something i could do by setting the parent?

[Pablo J. Rogina]

@MTOLANI said in Set Window Icon in QMessageBox:

I am using the same icon, in FileDialogs its working fine.

Could you post that code snippet?

For me, it looks like you're forgetting the #include <QIcon> in the file that holds popupYesNoBox() method.