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Need help about Sudoku's cells

  • Hello,

    I coded a Sudoku, I have used QLineEdit for the cells and I write the digits from 1 to 9, it works but now I would like to add a "hint" option which would display the candidate digits written in very little in each empty cell.

    How can I do that?
    Can I do that with QLineEdit (with something like a mask or background option which would overlap the cell)?
    Do I have to use another QWidget?
    Do I have to custom my own widget?

    (I also would like to be able to draw a circle in a cell, that's for another gridgame but if you have an idea, would be lovely).

    Thank you.

    P.S. Sorry English is not my mother tongue.

  • A simple way you could accomplish the hint option is to use tool tips. I know this isn't what you asked for though. Maybe you could use a font subscript to do it as well? I've not tried that.

  • Lifetime Qt Champion


    One idea that comes to mind is to use a QTableWidget and make a custom QStyledItemDelegate.

    Hope it helps

  • Lifetime Qt Champion

    @Calivernon said:

    it would work best with a custom control and its own paintevent but
    you must also make sure u can still input the number so
    would need some code for your own widget.

    To display hint, you could use a QLabel that you "move to front" so it will
    be on top of the LineEdit.

    To draw circle later:
    QPixMap pix(100,100);
    QPainter painter(&pix);
    ui->someLabel.setPixmap(pix); << use QLabel to display pixmap

    Also for fun. advanced version to look at:

  • Hi, thank you guys, I am going to try that.

    Thanks, bye bye

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