Question

I’ve got a QPrintPreviewWidget, I update its content programmatically based on user input. The problem when doing so is that the scrollbar stays where it was, while I need it to go back to the top.

I tried using the scroll function with a very big number but that didn’t do anything. Any suggestion?

Edit:

Here is the structure of the dialog in Qt Creator:

Then I add the QPrintPreviewWidget to the previewWidgetContainter layout using this code:

previewWidget_ = new QPrintPreviewWidget(printer_, this);
previewWidget_->fitToWidth();
ui->previewWidgetContainter->addWidget(previewWidget_);

Edit:

I followed @tmpearce ‘s suggestion, but that didn’t work. On the showEvent I set the current page but it has no effect whatsoever. My code is something like this:

qDebug() << "Before" << previewWidget.currentPage();
previewWidget.setCurrentPage(0);
qDebug() << "After" << previewWidget.currentPage();

And the output of this is always something like that:

Before 15
After 15

I also tried setting the page in various other places but the result is always the same. That looks like a bug in QPrintPreviewWidget so I’m going to give up for now. Thanks anyway for the suggestions.

Answer 1

Without knowing more about the specifics of your code, my suggestion would be to explicitly call this slot: QPrintPreviewWidget::setCurrentPage(int)

after changing the contents of the widget.