QmodelIndex和报头数据

Question

我有一个4个表视图在我的ui屏幕上，我的标题数据函数为4个视图，我只需要一个1行名-温度的视图1和3和四行名称分别为字段1x，字段4x，字段10x，字段40x。我的函数是

virtual QVariant headerData(int section,Qt::Orientation orientation,
                int role = Qt::DisplayRole) const
    {
        switch(role)
        {
        case Qt::DisplayRole:
            switch (orientation)
            {
            case Qt::Vertical:
 switch (m_channel)
                    {
                    case 0:
                        switch (section)    // Range
                        {
                        case 0:
                            return "Temperature1";
                        }
                    case 1:
                        switch (section)    // Range
                        {
                        case 0:
                            return "Field 1x range";
                        case 1:
                            return "Field 4x range";
                        case 2:
                            return "Field 10x range";
                        case 3:
                            return "Field 40x range";
                        }
                    case 2:
                        switch (section)    // Range
                        {
                        case 0:
                            return "Temperature2";
                        }
                    case 3:
                        switch (section)    // Range
                        {
                        case 0:
                            return "Field 1x range";
                        case 1:
                            return "Field 4x range";
                        case 2:
                            return "Field 10x range";
                        case 3:
                            return "Field 40x range";
                        }

但是，编译后的屏幕显示温度，视图1和视图3的字段4x，字段10x，字段40x，我不会这样做

请帮帮忙

Answer 1

您的switch语句中缺少分隔符。例如：

                    switch (m_channel)
                    {
                    case 0:
                        switch (section)    // Range
                        {
                        case 0:
                            return "Temperature1";
                        }
                        break; // <-- You need this.
                    case 1:
                        ...

通常，为switch语句提供一个default标签也是一个好主意。