Using Qtextedit to implement status information display boxes

To implement the status information display box using Qtextedit:

1, using qtexttable, organization status information

2, when the status information reaches a certain amount, the first record is automatically deleted. (For this check for a long time Qtextedit delete content method to achieve this function, so leave this record, for reuse. ）

void mainwindow::onstatusinfo (int flag,qstring msg) {QString text;
    Qtextcharformat chfmt;
        Set Status information label switch (flag) {Case 1:text = "info";
        Chfmt.setforeground (Qbrush (qt::black));
    Break
        Case 2:text = "WARN";
        Chfmt.setforeground (Qbrush (Qt::yellow));
    Break
        Case 3:text = "ERROR";
        Chfmt.setforeground (Qbrush (qt::red));
    Break
    Default:break;
    }//Append status information after the label text.append ("" +msg);
    Set the insertion position to Qtextedit last line qtextcursor cur = ui->statustextediter->textcursor ();
    Cur.moveposition (Qtextcursor::end);
    Qtexttabelformate tableformate;
    Tableformate.setborder (0);
    Insert table for displaying status information qtexttable *table = cur.inserttable (2,1,tableformate);
    Table->cellat (0,0). Firstcursorposition (). InsertText ("[" +qtime::currenttime (). toString ("Hh:mm:ss") + "]");
    Table->cellat (1,0). Firstcursorposition (). InsertText (text); Cur.moveposition (qtextcursor::endofblock,qtextcursor::keepanchor,1);
    Cur.select (Qtextcursor::blockundercursor);
    Cur.mergecharformat (CHFMT);
    Cur.clearselection ();
    Qscrollbar *bar = Ui->statustextedit->verticalscrollbar ();
    Bar->setvalue (Bar->maximum ());
    Number of status information +1 M_status_count + +; If the number of messages is >50, delete the oldest record if (M_status_count >50) {//Move the selection cursor to the first character cur.setposition (1,qtextcursor:
        : Moveanchor);
        Select the first table Cur.moveposition (qtextcursor::endofblock,qtextcursor::keepanchor,1) containing the earliest state information;
        Cur.select (Qtextcursor::blockundercursor);
        Delete this information cur.removeselectedtext ();
        The cursor moves to the last line of Qtextedit cur.moveposition (Qtextcursor::end,qtextcursor::moveanchor);
    M_status_count--; }

}