Manipulating member name to be controlled by string

[jwflammer]

I have a 10 by 10 grid of frames, i can change their backgrounds with

ui->box_9_9->setStyleSheet("background-color: rgb(255,0,0)");

ui->box_9_9->setStyleSheet("background-color: rgb(255,0,0)");

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but that's a lot of code, id like to have a For Loop

int count;
    QString boxnum;
    for (count = 0; count <= 10; count++)
    {
        boxnum += "box_";
        boxnum += QString::number(count);
        boxnum += "_";
        boxnum += QString::number(count);
        ui->boxnum->setStyleSheet("background-color: rgb(255,0,0)");
    }

int count;
    QString boxnum;
    for (count = 0; count <= 10; count++)
    {
        boxnum += "box_";
        boxnum += QString::number(count);
        boxnum += "_";
        boxnum += QString::number(count);
        ui->boxnum->setStyleSheet("background-color: rgb(255,0,0)");
    }

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but i get an error. What am i doing wrong?