我对QT很新,并且无法理解如何处理QTableView选择改变信号.我已经设置了一个带有openGL小部件和QTableView的窗口.我有一个正确填充tableview的数据模型类,所以我在该类中添加了一个公共插槽:
class APartsTableModel : public QAbstractTableModel
{
public:
AVehicleModel *vehicle;
explicit APartsTableModel(QObject *parent = 0);
//MVC functions
int rowCount(const QModelIndex &parent) const;
int columnCount(const QModelIndex &paret) const;
QVariant data(const QModelIndex &index, int role) const;
QVariant headerData(int section, Qt::Orientation orientation, int role) const;
public slots:
void selectionChangedSlot(const QItemSelection &newSelection,
const QItemSelection &oldSelection);
};
当我准备用表视图显示窗口时,我像这样分配/初始化它:
//create the display view
AStarModelView *displayWindow = new AStarModelView(this,
starModel->vehicle);
//create the datamodel for the table view
APartsTableModel *dataModel = new APartsTableModel(displayWindow);
dataModel->vehicle = starModel->vehicle;
//create selection model for table view
QItemSelectionModel *selModel = new QItemSelectionModel(dataModel);
displayWindow->materialsTable->setSelectionModel(selModel);
//setup model and signal
displayWindow->materialsTable->setModel(dataModel);
connect(selModel,
SIGNAL(selectionChanged(const QItemSelection &, const QItemSelection &)),
dataModel,
SLOT(selectionChangedSlot(const QItemSelection &, const QItemSelection &)));
//show the view
displayWindow->show();
当我在插槽函数的实现中设置断点时,我从未点过它.我也尝试过不分配新的QItemSelectionModel,但这也不起作用.我真的不确定我在这里做错了什么.
最佳答案 在视图上调用setModel()时,本地分配的QItemSelectionModel将被视图创建的QItemSelectionModel替换.无论如何,您不必创建自己的选择模型.只需将连接更改为
connect(displayWindow->materialsTable->selectionModel(),
SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
dataModel,
SLOT(selectionChangedSlot(const QItemSelection&, const QItemSelection&)));